EmbeddedPkg: Extend NvVarStoreFormattedLib LIBRARY_CLASS

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Lib / test / test_doctest.py

# -*- coding: utf-8 -*-\r
"""\r
Test script for doctest.\r
"""\r
\r
import sys\r
from test import test_support\r
import doctest\r
\r
# NOTE: There are some additional tests relating to interaction with\r
#       zipimport in the test_zipimport_support test module.\r
\r
######################################################################\r
## Sample Objects (used by test cases)\r
######################################################################\r
\r
def sample_func(v):\r
    """\r
    Blah blah\r
\r
    >>> print sample_func(22)\r
    44\r
\r
    Yee ha!\r
    """\r
    return v+v\r
\r
class SampleClass:\r
    """\r
    >>> print 1\r
    1\r
\r
    >>> # comments get ignored.  so are empty PS1 and PS2 prompts:\r
    >>>\r
    ...\r
\r
    Multiline example:\r
    >>> sc = SampleClass(3)\r
    >>> for i in range(10):\r
    ...     sc = sc.double()\r
    ...     print sc.get(),\r
    6 12 24 48 96 192 384 768 1536 3072\r
    """\r
    def __init__(self, val):\r
        """\r
        >>> print SampleClass(12).get()\r
        12\r
        """\r
        self.val = val\r
\r
    def double(self):\r
        """\r
        >>> print SampleClass(12).double().get()\r
        24\r
        """\r
        return SampleClass(self.val + self.val)\r
\r
    def get(self):\r
        """\r
        >>> print SampleClass(-5).get()\r
        -5\r
        """\r
        return self.val\r
\r
    def a_staticmethod(v):\r
        """\r
        >>> print SampleClass.a_staticmethod(10)\r
        11\r
        """\r
        return v+1\r
    a_staticmethod = staticmethod(a_staticmethod)\r
\r
    def a_classmethod(cls, v):\r
        """\r
        >>> print SampleClass.a_classmethod(10)\r
        12\r
        >>> print SampleClass(0).a_classmethod(10)\r
        12\r
        """\r
        return v+2\r
    a_classmethod = classmethod(a_classmethod)\r
\r
    a_property = property(get, doc="""\r
        >>> print SampleClass(22).a_property\r
        22\r
        """)\r
\r
    class NestedClass:\r
        """\r
        >>> x = SampleClass.NestedClass(5)\r
        >>> y = x.square()\r
        >>> print y.get()\r
        25\r
        """\r
        def __init__(self, val=0):\r
            """\r
            >>> print SampleClass.NestedClass().get()\r
            0\r
            """\r
            self.val = val\r
        def square(self):\r
            return SampleClass.NestedClass(self.val*self.val)\r
        def get(self):\r
            return self.val\r
\r
class SampleNewStyleClass(object):\r
    r"""\r
    >>> print '1\n2\n3'\r
    1\r
    2\r
    3\r
    """\r
    def __init__(self, val):\r
        """\r
        >>> print SampleNewStyleClass(12).get()\r
        12\r
        """\r
        self.val = val\r
\r
    def double(self):\r
        """\r
        >>> print SampleNewStyleClass(12).double().get()\r
        24\r
        """\r
        return SampleNewStyleClass(self.val + self.val)\r
\r
    def get(self):\r
        """\r
        >>> print SampleNewStyleClass(-5).get()\r
        -5\r
        """\r
        return self.val\r
\r
######################################################################\r
## Fake stdin (for testing interactive debugging)\r
######################################################################\r
\r
class _FakeInput:\r
    """\r
    A fake input stream for pdb's interactive debugger.  Whenever a\r
    line is read, print it (to simulate the user typing it), and then\r
    return it.  The set of lines to return is specified in the\r
    constructor; they should not have trailing newlines.\r
    """\r
    def __init__(self, lines):\r
        self.lines = lines\r
\r
    def readline(self):\r
        line = self.lines.pop(0)\r
        print line\r
        return line+'\n'\r
\r
######################################################################\r
## Test Cases\r
######################################################################\r
\r
def test_Example(): r"""\r
Unit tests for the `Example` class.\r
\r
Example is a simple container class that holds:\r
  - `source`: A source string.\r
  - `want`: An expected output string.\r
  - `exc_msg`: An expected exception message string (or None if no\r
    exception is expected).\r
  - `lineno`: A line number (within the docstring).\r
  - `indent`: The example's indentation in the input string.\r
  - `options`: An option dictionary, mapping option flags to True or\r
    False.\r
\r
These attributes are set by the constructor.  `source` and `want` are\r
required; the other attributes all have default values:\r
\r
    >>> example = doctest.Example('print 1', '1\n')\r
    >>> (example.source, example.want, example.exc_msg,\r
    ...  example.lineno, example.indent, example.options)\r
    ('print 1\n', '1\n', None, 0, 0, {})\r
\r
The first three attributes (`source`, `want`, and `exc_msg`) may be\r
specified positionally; the remaining arguments should be specified as\r
keyword arguments:\r
\r
    >>> exc_msg = 'IndexError: pop from an empty list'\r
    >>> example = doctest.Example('[].pop()', '', exc_msg,\r
    ...                           lineno=5, indent=4,\r
    ...                           options={doctest.ELLIPSIS: True})\r
    >>> (example.source, example.want, example.exc_msg,\r
    ...  example.lineno, example.indent, example.options)\r
    ('[].pop()\n', '', 'IndexError: pop from an empty list\n', 5, 4, {8: True})\r
\r
The constructor normalizes the `source` string to end in a newline:\r
\r
    Source spans a single line: no terminating newline.\r
    >>> e = doctest.Example('print 1', '1\n')\r
    >>> e.source, e.want\r
    ('print 1\n', '1\n')\r
\r
    >>> e = doctest.Example('print 1\n', '1\n')\r
    >>> e.source, e.want\r
    ('print 1\n', '1\n')\r
\r
    Source spans multiple lines: require terminating newline.\r
    >>> e = doctest.Example('print 1;\nprint 2\n', '1\n2\n')\r
    >>> e.source, e.want\r
    ('print 1;\nprint 2\n', '1\n2\n')\r
\r
    >>> e = doctest.Example('print 1;\nprint 2', '1\n2\n')\r
    >>> e.source, e.want\r
    ('print 1;\nprint 2\n', '1\n2\n')\r
\r
    Empty source string (which should never appear in real examples)\r
    >>> e = doctest.Example('', '')\r
    >>> e.source, e.want\r
    ('\n', '')\r
\r
The constructor normalizes the `want` string to end in a newline,\r
unless it's the empty string:\r
\r
    >>> e = doctest.Example('print 1', '1\n')\r
    >>> e.source, e.want\r
    ('print 1\n', '1\n')\r
\r
    >>> e = doctest.Example('print 1', '1')\r
    >>> e.source, e.want\r
    ('print 1\n', '1\n')\r
\r
    >>> e = doctest.Example('print', '')\r
    >>> e.source, e.want\r
    ('print\n', '')\r
\r
The constructor normalizes the `exc_msg` string to end in a newline,\r
unless it's `None`:\r
\r
    Message spans one line\r
    >>> exc_msg = 'IndexError: pop from an empty list'\r
    >>> e = doctest.Example('[].pop()', '', exc_msg)\r
    >>> e.exc_msg\r
    'IndexError: pop from an empty list\n'\r
\r
    >>> exc_msg = 'IndexError: pop from an empty list\n'\r
    >>> e = doctest.Example('[].pop()', '', exc_msg)\r
    >>> e.exc_msg\r
    'IndexError: pop from an empty list\n'\r
\r
    Message spans multiple lines\r
    >>> exc_msg = 'ValueError: 1\n  2'\r
    >>> e = doctest.Example('raise ValueError("1\n  2")', '', exc_msg)\r
    >>> e.exc_msg\r
    'ValueError: 1\n  2\n'\r
\r
    >>> exc_msg = 'ValueError: 1\n  2\n'\r
    >>> e = doctest.Example('raise ValueError("1\n  2")', '', exc_msg)\r
    >>> e.exc_msg\r
    'ValueError: 1\n  2\n'\r
\r
    Empty (but non-None) exception message (which should never appear\r
    in real examples)\r
    >>> exc_msg = ''\r
    >>> e = doctest.Example('raise X()', '', exc_msg)\r
    >>> e.exc_msg\r
    '\n'\r
"""\r
\r
def test_DocTest(): r"""\r
Unit tests for the `DocTest` class.\r
\r
DocTest is a collection of examples, extracted from a docstring, along\r
with information about where the docstring comes from (a name,\r
filename, and line number).  The docstring is parsed by the `DocTest`\r
constructor:\r
\r
    >>> docstring = '''\r
    ...     >>> print 12\r
    ...     12\r
    ...\r
    ... Non-example text.\r
    ...\r
    ...     >>> print 'another\example'\r
    ...     another\r
    ...     example\r
    ... '''\r
    >>> globs = {} # globals to run the test in.\r
    >>> parser = doctest.DocTestParser()\r
    >>> test = parser.get_doctest(docstring, globs, 'some_test',\r
    ...                           'some_file', 20)\r
    >>> print test\r
    <DocTest some_test from some_file:20 (2 examples)>\r
    >>> len(test.examples)\r
    2\r
    >>> e1, e2 = test.examples\r
    >>> (e1.source, e1.want, e1.lineno)\r
    ('print 12\n', '12\n', 1)\r
    >>> (e2.source, e2.want, e2.lineno)\r
    ("print 'another\\example'\n", 'another\nexample\n', 6)\r
\r
Source information (name, filename, and line number) is available as\r
attributes on the doctest object:\r
\r
    >>> (test.name, test.filename, test.lineno)\r
    ('some_test', 'some_file', 20)\r
\r
The line number of an example within its containing file is found by\r
adding the line number of the example and the line number of its\r
containing test:\r
\r
    >>> test.lineno + e1.lineno\r
    21\r
    >>> test.lineno + e2.lineno\r
    26\r
\r
If the docstring contains inconsistant leading whitespace in the\r
expected output of an example, then `DocTest` will raise a ValueError:\r
\r
    >>> docstring = r'''\r
    ...       >>> print 'bad\nindentation'\r
    ...       bad\r
    ...     indentation\r
    ...     '''\r
    >>> parser.get_doctest(docstring, globs, 'some_test', 'filename', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 4 of the docstring for some_test has inconsistent leading whitespace: 'indentation'\r
\r
If the docstring contains inconsistent leading whitespace on\r
continuation lines, then `DocTest` will raise a ValueError:\r
\r
    >>> docstring = r'''\r
    ...       >>> print ('bad indentation',\r
    ...     ...          2)\r
    ...       ('bad', 'indentation')\r
    ...     '''\r
    >>> parser.get_doctest(docstring, globs, 'some_test', 'filename', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 2 of the docstring for some_test has inconsistent leading whitespace: '...          2)'\r
\r
If there's no blank space after a PS1 prompt ('>>>'), then `DocTest`\r
will raise a ValueError:\r
\r
    >>> docstring = '>>>print 1\n1'\r
    >>> parser.get_doctest(docstring, globs, 'some_test', 'filename', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 1 of the docstring for some_test lacks blank after >>>: '>>>print 1'\r
\r
If there's no blank space after a PS2 prompt ('...'), then `DocTest`\r
will raise a ValueError:\r
\r
    >>> docstring = '>>> if 1:\n...print 1\n1'\r
    >>> parser.get_doctest(docstring, globs, 'some_test', 'filename', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 2 of the docstring for some_test lacks blank after ...: '...print 1'\r
\r
"""\r
\r
def test_DocTestFinder(): r"""\r
Unit tests for the `DocTestFinder` class.\r
\r
DocTestFinder is used to extract DocTests from an object's docstring\r
and the docstrings of its contained objects.  It can be used with\r
modules, functions, classes, methods, staticmethods, classmethods, and\r
properties.\r
\r
Finding Tests in Functions\r
~~~~~~~~~~~~~~~~~~~~~~~~~~\r
For a function whose docstring contains examples, DocTestFinder.find()\r
will return a single test (for that function's docstring):\r
\r
    >>> finder = doctest.DocTestFinder()\r
\r
We'll simulate a __file__ attr that ends in pyc:\r
\r
    >>> import test.test_doctest\r
    >>> old = test.test_doctest.__file__\r
    >>> test.test_doctest.__file__ = 'test_doctest.pyc'\r
\r
    >>> tests = finder.find(sample_func)\r
\r
    >>> print tests  # doctest: +ELLIPSIS\r
    [<DocTest sample_func from ...:17 (1 example)>]\r
\r
The exact name depends on how test_doctest was invoked, so allow for\r
leading path components.\r
\r
    >>> tests[0].filename # doctest: +ELLIPSIS\r
    '...test_doctest.py'\r
\r
    >>> test.test_doctest.__file__ = old\r
\r
\r
    >>> e = tests[0].examples[0]\r
    >>> (e.source, e.want, e.lineno)\r
    ('print sample_func(22)\n', '44\n', 3)\r
\r
By default, tests are created for objects with no docstring:\r
\r
    >>> def no_docstring(v):\r
    ...     pass\r
    >>> finder.find(no_docstring)\r
    []\r
\r
However, the optional argument `exclude_empty` to the DocTestFinder\r
constructor can be used to exclude tests for objects with empty\r
docstrings:\r
\r
    >>> def no_docstring(v):\r
    ...     pass\r
    >>> excl_empty_finder = doctest.DocTestFinder(exclude_empty=True)\r
    >>> excl_empty_finder.find(no_docstring)\r
    []\r
\r
If the function has a docstring with no examples, then a test with no\r
examples is returned.  (This lets `DocTestRunner` collect statistics\r
about which functions have no tests -- but is that useful?  And should\r
an empty test also be created when there's no docstring?)\r
\r
    >>> def no_examples(v):\r
    ...     ''' no doctest examples '''\r
    >>> finder.find(no_examples) # doctest: +ELLIPSIS\r
    [<DocTest no_examples from ...:1 (no examples)>]\r
\r
Finding Tests in Classes\r
~~~~~~~~~~~~~~~~~~~~~~~~\r
For a class, DocTestFinder will create a test for the class's\r
docstring, and will recursively explore its contents, including\r
methods, classmethods, staticmethods, properties, and nested classes.\r
\r
    >>> finder = doctest.DocTestFinder()\r
    >>> tests = finder.find(SampleClass)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     3  SampleClass\r
     3  SampleClass.NestedClass\r
     1  SampleClass.NestedClass.__init__\r
     1  SampleClass.__init__\r
     2  SampleClass.a_classmethod\r
     1  SampleClass.a_property\r
     1  SampleClass.a_staticmethod\r
     1  SampleClass.double\r
     1  SampleClass.get\r
\r
New-style classes are also supported:\r
\r
    >>> tests = finder.find(SampleNewStyleClass)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     1  SampleNewStyleClass\r
     1  SampleNewStyleClass.__init__\r
     1  SampleNewStyleClass.double\r
     1  SampleNewStyleClass.get\r
\r
Finding Tests in Modules\r
~~~~~~~~~~~~~~~~~~~~~~~~\r
For a module, DocTestFinder will create a test for the class's\r
docstring, and will recursively explore its contents, including\r
functions, classes, and the `__test__` dictionary, if it exists:\r
\r
    >>> # A module\r
    >>> import types\r
    >>> m = types.ModuleType('some_module')\r
    >>> def triple(val):\r
    ...     '''\r
    ...     >>> print triple(11)\r
    ...     33\r
    ...     '''\r
    ...     return val*3\r
    >>> m.__dict__.update({\r
    ...     'sample_func': sample_func,\r
    ...     'SampleClass': SampleClass,\r
    ...     '__doc__': '''\r
    ...         Module docstring.\r
    ...             >>> print 'module'\r
    ...             module\r
    ...         ''',\r
    ...     '__test__': {\r
    ...         'd': '>>> print 6\n6\n>>> print 7\n7\n',\r
    ...         'c': triple}})\r
\r
    >>> finder = doctest.DocTestFinder()\r
    >>> # Use module=test.test_doctest, to prevent doctest from\r
    >>> # ignoring the objects since they weren't defined in m.\r
    >>> import test.test_doctest\r
    >>> tests = finder.find(m, module=test.test_doctest)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     1  some_module\r
     3  some_module.SampleClass\r
     3  some_module.SampleClass.NestedClass\r
     1  some_module.SampleClass.NestedClass.__init__\r
     1  some_module.SampleClass.__init__\r
     2  some_module.SampleClass.a_classmethod\r
     1  some_module.SampleClass.a_property\r
     1  some_module.SampleClass.a_staticmethod\r
     1  some_module.SampleClass.double\r
     1  some_module.SampleClass.get\r
     1  some_module.__test__.c\r
     2  some_module.__test__.d\r
     1  some_module.sample_func\r
\r
Duplicate Removal\r
~~~~~~~~~~~~~~~~~\r
If a single object is listed twice (under different names), then tests\r
will only be generated for it once:\r
\r
    >>> from test import doctest_aliases\r
    >>> assert doctest_aliases.TwoNames.f\r
    >>> assert doctest_aliases.TwoNames.g\r
    >>> tests = excl_empty_finder.find(doctest_aliases)\r
    >>> print len(tests)\r
    2\r
    >>> print tests[0].name\r
    test.doctest_aliases.TwoNames\r
\r
    TwoNames.f and TwoNames.g are bound to the same object.\r
    We can't guess which will be found in doctest's traversal of\r
    TwoNames.__dict__ first, so we have to allow for either.\r
\r
    >>> tests[1].name.split('.')[-1] in ['f', 'g']\r
    True\r
\r
Empty Tests\r
~~~~~~~~~~~\r
By default, an object with no doctests doesn't create any tests:\r
\r
    >>> tests = doctest.DocTestFinder().find(SampleClass)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     3  SampleClass\r
     3  SampleClass.NestedClass\r
     1  SampleClass.NestedClass.__init__\r
     1  SampleClass.__init__\r
     2  SampleClass.a_classmethod\r
     1  SampleClass.a_property\r
     1  SampleClass.a_staticmethod\r
     1  SampleClass.double\r
     1  SampleClass.get\r
\r
By default, that excluded objects with no doctests.  exclude_empty=False\r
tells it to include (empty) tests for objects with no doctests.  This feature\r
is really to support backward compatibility in what doctest.master.summarize()\r
displays.\r
\r
    >>> tests = doctest.DocTestFinder(exclude_empty=False).find(SampleClass)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     3  SampleClass\r
     3  SampleClass.NestedClass\r
     1  SampleClass.NestedClass.__init__\r
     0  SampleClass.NestedClass.get\r
     0  SampleClass.NestedClass.square\r
     1  SampleClass.__init__\r
     2  SampleClass.a_classmethod\r
     1  SampleClass.a_property\r
     1  SampleClass.a_staticmethod\r
     1  SampleClass.double\r
     1  SampleClass.get\r
\r
Turning off Recursion\r
~~~~~~~~~~~~~~~~~~~~~\r
DocTestFinder can be told not to look for tests in contained objects\r
using the `recurse` flag:\r
\r
    >>> tests = doctest.DocTestFinder(recurse=False).find(SampleClass)\r
    >>> for t in tests:\r
    ...     print '%2s  %s' % (len(t.examples), t.name)\r
     3  SampleClass\r
\r
Line numbers\r
~~~~~~~~~~~~\r
DocTestFinder finds the line number of each example:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...\r
    ...     some text\r
    ...\r
    ...     >>> # examples are not created for comments & bare prompts.\r
    ...     >>>\r
    ...     ...\r
    ...\r
    ...     >>> for x in range(10):\r
    ...     ...     print x,\r
    ...     0 1 2 3 4 5 6 7 8 9\r
    ...     >>> x//2\r
    ...     6\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> [e.lineno for e in test.examples]\r
    [1, 9, 12]\r
"""\r
\r
def test_DocTestParser(): r"""\r
Unit tests for the `DocTestParser` class.\r
\r
DocTestParser is used to parse docstrings containing doctest examples.\r
\r
The `parse` method divides a docstring into examples and intervening\r
text:\r
\r
    >>> s = '''\r
    ...     >>> x, y = 2, 3  # no output expected\r
    ...     >>> if 1:\r
    ...     ...     print x\r
    ...     ...     print y\r
    ...     2\r
    ...     3\r
    ...\r
    ...     Some text.\r
    ...     >>> x+y\r
    ...     5\r
    ...     '''\r
    >>> parser = doctest.DocTestParser()\r
    >>> for piece in parser.parse(s):\r
    ...     if isinstance(piece, doctest.Example):\r
    ...         print 'Example:', (piece.source, piece.want, piece.lineno)\r
    ...     else:\r
    ...         print '   Text:', `piece`\r
       Text: '\n'\r
    Example: ('x, y = 2, 3  # no output expected\n', '', 1)\r
       Text: ''\r
    Example: ('if 1:\n    print x\n    print y\n', '2\n3\n', 2)\r
       Text: '\nSome text.\n'\r
    Example: ('x+y\n', '5\n', 9)\r
       Text: ''\r
\r
The `get_examples` method returns just the examples:\r
\r
    >>> for piece in parser.get_examples(s):\r
    ...     print (piece.source, piece.want, piece.lineno)\r
    ('x, y = 2, 3  # no output expected\n', '', 1)\r
    ('if 1:\n    print x\n    print y\n', '2\n3\n', 2)\r
    ('x+y\n', '5\n', 9)\r
\r
The `get_doctest` method creates a Test from the examples, along with the\r
given arguments:\r
\r
    >>> test = parser.get_doctest(s, {}, 'name', 'filename', lineno=5)\r
    >>> (test.name, test.filename, test.lineno)\r
    ('name', 'filename', 5)\r
    >>> for piece in test.examples:\r
    ...     print (piece.source, piece.want, piece.lineno)\r
    ('x, y = 2, 3  # no output expected\n', '', 1)\r
    ('if 1:\n    print x\n    print y\n', '2\n3\n', 2)\r
    ('x+y\n', '5\n', 9)\r
"""\r
\r
class test_DocTestRunner:\r
    def basics(): r"""\r
Unit tests for the `DocTestRunner` class.\r
\r
DocTestRunner is used to run DocTest test cases, and to accumulate\r
statistics.  Here's a simple DocTest case we can use:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...     >>> print x\r
    ...     12\r
    ...     >>> x//2\r
    ...     6\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
\r
The main DocTestRunner interface is the `run` method, which runs a\r
given DocTest case in a given namespace (globs).  It returns a tuple\r
`(f,t)`, where `f` is the number of failed tests and `t` is the number\r
of tried tests.\r
\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=3)\r
\r
If any example produces incorrect output, then the test runner reports\r
the failure and proceeds to the next example:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...     >>> print x\r
    ...     14\r
    ...     >>> x//2\r
    ...     6\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=True).run(test)\r
    ... # doctest: +ELLIPSIS\r
    Trying:\r
        x = 12\r
    Expecting nothing\r
    ok\r
    Trying:\r
        print x\r
    Expecting:\r
        14\r
    **********************************************************************\r
    File ..., line 4, in f\r
    Failed example:\r
        print x\r
    Expected:\r
        14\r
    Got:\r
        12\r
    Trying:\r
        x//2\r
    Expecting:\r
        6\r
    ok\r
    TestResults(failed=1, attempted=3)\r
"""\r
    def verbose_flag(): r"""\r
The `verbose` flag makes the test runner generate more detailed\r
output:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...     >>> print x\r
    ...     12\r
    ...     >>> x//2\r
    ...     6\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
\r
    >>> doctest.DocTestRunner(verbose=True).run(test)\r
    Trying:\r
        x = 12\r
    Expecting nothing\r
    ok\r
    Trying:\r
        print x\r
    Expecting:\r
        12\r
    ok\r
    Trying:\r
        x//2\r
    Expecting:\r
        6\r
    ok\r
    TestResults(failed=0, attempted=3)\r
\r
If the `verbose` flag is unspecified, then the output will be verbose\r
iff `-v` appears in sys.argv:\r
\r
    >>> # Save the real sys.argv list.\r
    >>> old_argv = sys.argv\r
\r
    >>> # If -v does not appear in sys.argv, then output isn't verbose.\r
    >>> sys.argv = ['test']\r
    >>> doctest.DocTestRunner().run(test)\r
    TestResults(failed=0, attempted=3)\r
\r
    >>> # If -v does appear in sys.argv, then output is verbose.\r
    >>> sys.argv = ['test', '-v']\r
    >>> doctest.DocTestRunner().run(test)\r
    Trying:\r
        x = 12\r
    Expecting nothing\r
    ok\r
    Trying:\r
        print x\r
    Expecting:\r
        12\r
    ok\r
    Trying:\r
        x//2\r
    Expecting:\r
        6\r
    ok\r
    TestResults(failed=0, attempted=3)\r
\r
    >>> # Restore sys.argv\r
    >>> sys.argv = old_argv\r
\r
In the remaining examples, the test runner's verbosity will be\r
explicitly set, to ensure that the test behavior is consistent.\r
    """\r
    def exceptions(): r"""\r
Tests of `DocTestRunner`'s exception handling.\r
\r
An expected exception is specified with a traceback message.  The\r
lines between the first line and the type/value may be omitted or\r
replaced with any other string:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...     >>> print x//0\r
    ...     Traceback (most recent call last):\r
    ...     ZeroDivisionError: integer division or modulo by zero\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=2)\r
\r
An example may not generate output before it raises an exception; if\r
it does, then the traceback message will not be recognized as\r
signaling an expected exception, so the example will be reported as an\r
unexpected exception:\r
\r
    >>> def f(x):\r
    ...     '''\r
    ...     >>> x = 12\r
    ...     >>> print 'pre-exception output', x//0\r
    ...     pre-exception output\r
    ...     Traceback (most recent call last):\r
    ...     ZeroDivisionError: integer division or modulo by zero\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 4, in f\r
    Failed example:\r
        print 'pre-exception output', x//0\r
    Exception raised:\r
        ...\r
        ZeroDivisionError: integer division or modulo by zero\r
    TestResults(failed=1, attempted=2)\r
\r
Exception messages may contain newlines:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> raise ValueError, 'multi\nline\nmessage'\r
    ...     Traceback (most recent call last):\r
    ...     ValueError: multi\r
    ...     line\r
    ...     message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
If an exception is expected, but an exception with the wrong type or\r
message is raised, then it is reported as a failure:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> raise ValueError, 'message'\r
    ...     Traceback (most recent call last):\r
    ...     ValueError: wrong message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        raise ValueError, 'message'\r
    Expected:\r
        Traceback (most recent call last):\r
        ValueError: wrong message\r
    Got:\r
        Traceback (most recent call last):\r
        ...\r
        ValueError: message\r
    TestResults(failed=1, attempted=1)\r
\r
However, IGNORE_EXCEPTION_DETAIL can be used to allow a mismatch in the\r
detail:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> raise ValueError, 'message' #doctest: +IGNORE_EXCEPTION_DETAIL\r
    ...     Traceback (most recent call last):\r
    ...     ValueError: wrong message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
IGNORE_EXCEPTION_DETAIL also ignores difference in exception formatting\r
between Python versions. For example, in Python 3.x, the module path of\r
the exception is in the output, but this will fail under Python 2:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> from httplib import HTTPException\r
    ...     >>> raise HTTPException('message')\r
    ...     Traceback (most recent call last):\r
    ...     httplib.HTTPException: message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 4, in f\r
    Failed example:\r
        raise HTTPException('message')\r
    Expected:\r
        Traceback (most recent call last):\r
        httplib.HTTPException: message\r
    Got:\r
        Traceback (most recent call last):\r
        ...\r
        HTTPException: message\r
    TestResults(failed=1, attempted=2)\r
\r
But in Python 2 the module path is not included, an therefore a test must look\r
like the following test to succeed in Python 2. But that test will fail under\r
Python 3.\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> from httplib import HTTPException\r
    ...     >>> raise HTTPException('message')\r
    ...     Traceback (most recent call last):\r
    ...     HTTPException: message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=2)\r
\r
However, with IGNORE_EXCEPTION_DETAIL, the module name of the exception\r
(if any) will be ignored:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> from httplib import HTTPException\r
    ...     >>> raise HTTPException('message') #doctest: +IGNORE_EXCEPTION_DETAIL\r
    ...     Traceback (most recent call last):\r
    ...     HTTPException: message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=2)\r
\r
The module path will be completely ignored, so two different module paths will\r
still pass if IGNORE_EXCEPTION_DETAIL is given. This is intentional, so it can\r
be used when exceptions have changed module.\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> from httplib import HTTPException\r
    ...     >>> raise HTTPException('message') #doctest: +IGNORE_EXCEPTION_DETAIL\r
    ...     Traceback (most recent call last):\r
    ...     foo.bar.HTTPException: message\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=2)\r
\r
But IGNORE_EXCEPTION_DETAIL does not allow a mismatch in the exception type:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> raise ValueError, 'message' #doctest: +IGNORE_EXCEPTION_DETAIL\r
    ...     Traceback (most recent call last):\r
    ...     TypeError: wrong type\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        raise ValueError, 'message' #doctest: +IGNORE_EXCEPTION_DETAIL\r
    Expected:\r
        Traceback (most recent call last):\r
        TypeError: wrong type\r
    Got:\r
        Traceback (most recent call last):\r
        ...\r
        ValueError: message\r
    TestResults(failed=1, attempted=1)\r
\r
If an exception is raised but not expected, then it is reported as an\r
unexpected exception:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> 1//0\r
    ...     0\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        1//0\r
    Exception raised:\r
        Traceback (most recent call last):\r
        ...\r
        ZeroDivisionError: integer division or modulo by zero\r
    TestResults(failed=1, attempted=1)\r
"""\r
    def displayhook(): r"""\r
Test that changing sys.displayhook doesn't matter for doctest.\r
\r
    >>> import sys\r
    >>> orig_displayhook = sys.displayhook\r
    >>> def my_displayhook(x):\r
    ...     print('hi!')\r
    >>> sys.displayhook = my_displayhook\r
    >>> def f():\r
    ...     '''\r
    ...     >>> 3\r
    ...     3\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> r = doctest.DocTestRunner(verbose=False).run(test)\r
    >>> post_displayhook = sys.displayhook\r
\r
    We need to restore sys.displayhook now, so that we'll be able to test\r
    results.\r
\r
    >>> sys.displayhook = orig_displayhook\r
\r
    Ok, now we can check that everything is ok.\r
\r
    >>> r\r
    TestResults(failed=0, attempted=1)\r
    >>> post_displayhook is my_displayhook\r
    True\r
"""\r
    def optionflags(): r"""\r
Tests of `DocTestRunner`'s option flag handling.\r
\r
Several option flags can be used to customize the behavior of the test\r
runner.  These are defined as module constants in doctest, and passed\r
to the DocTestRunner constructor (multiple constants should be ORed\r
together).\r
\r
The DONT_ACCEPT_TRUE_FOR_1 flag disables matches between True/False\r
and 1/0:\r
\r
    >>> def f(x):\r
    ...     '>>> True\n1\n'\r
\r
    >>> # Without the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
    >>> # With the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.DONT_ACCEPT_TRUE_FOR_1\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        True\r
    Expected:\r
        1\r
    Got:\r
        True\r
    TestResults(failed=1, attempted=1)\r
\r
The DONT_ACCEPT_BLANKLINE flag disables the match between blank lines\r
and the '<BLANKLINE>' marker:\r
\r
    >>> def f(x):\r
    ...     '>>> print "a\\n\\nb"\na\n<BLANKLINE>\nb\n'\r
\r
    >>> # Without the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
    >>> # With the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.DONT_ACCEPT_BLANKLINE\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print "a\n\nb"\r
    Expected:\r
        a\r
        <BLANKLINE>\r
        b\r
    Got:\r
        a\r
    <BLANKLINE>\r
        b\r
    TestResults(failed=1, attempted=1)\r
\r
The NORMALIZE_WHITESPACE flag causes all sequences of whitespace to be\r
treated as equal:\r
\r
    >>> def f(x):\r
    ...     '>>> print 1, 2, 3\n  1   2\n 3'\r
\r
    >>> # Without the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print 1, 2, 3\r
    Expected:\r
          1   2\r
         3\r
    Got:\r
        1 2 3\r
    TestResults(failed=1, attempted=1)\r
\r
    >>> # With the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.NORMALIZE_WHITESPACE\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
    An example from the docs:\r
    >>> print range(20) #doctest: +NORMALIZE_WHITESPACE\r
    [0,   1,  2,  3,  4,  5,  6,  7,  8,  9,\r
    10,  11, 12, 13, 14, 15, 16, 17, 18, 19]\r
\r
The ELLIPSIS flag causes ellipsis marker ("...") in the expected\r
output to match any substring in the actual output:\r
\r
    >>> def f(x):\r
    ...     '>>> print range(15)\n[0, 1, 2, ..., 14]\n'\r
\r
    >>> # Without the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(15)\r
    Expected:\r
        [0, 1, 2, ..., 14]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]\r
    TestResults(failed=1, attempted=1)\r
\r
    >>> # With the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.ELLIPSIS\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
    ... also matches nothing:\r
\r
    >>> for i in range(100):\r
    ...     print i**2, #doctest: +ELLIPSIS\r
    0 1...4...9 16 ... 36 49 64 ... 9801\r
\r
    ... can be surprising; e.g., this test passes:\r
\r
    >>> for i in range(21): #doctest: +ELLIPSIS\r
    ...     print i,\r
    0 1 2 ...1...2...0\r
\r
    Examples from the docs:\r
\r
    >>> print range(20) # doctest:+ELLIPSIS\r
    [0, 1, ..., 18, 19]\r
\r
    >>> print range(20) # doctest: +ELLIPSIS\r
    ...                 # doctest: +NORMALIZE_WHITESPACE\r
    [0,    1, ...,   18,    19]\r
\r
The SKIP flag causes an example to be skipped entirely.  I.e., the\r
example is not run.  It can be useful in contexts where doctest\r
examples serve as both documentation and test cases, and an example\r
should be included for documentation purposes, but should not be\r
checked (e.g., because its output is random, or depends on resources\r
which would be unavailable.)  The SKIP flag can also be used for\r
'commenting out' broken examples.\r
\r
    >>> import unavailable_resource           # doctest: +SKIP\r
    >>> unavailable_resource.do_something()   # doctest: +SKIP\r
    >>> unavailable_resource.blow_up()        # doctest: +SKIP\r
    Traceback (most recent call last):\r
        ...\r
    UncheckedBlowUpError:  Nobody checks me.\r
\r
    >>> import random\r
    >>> print random.random() # doctest: +SKIP\r
    0.721216923889\r
\r
The REPORT_UDIFF flag causes failures that involve multi-line expected\r
and actual outputs to be displayed using a unified diff:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> print '\n'.join('abcdefg')\r
    ...     a\r
    ...     B\r
    ...     c\r
    ...     d\r
    ...     f\r
    ...     g\r
    ...     h\r
    ...     '''\r
\r
    >>> # Without the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        print '\n'.join('abcdefg')\r
    Expected:\r
        a\r
        B\r
        c\r
        d\r
        f\r
        g\r
        h\r
    Got:\r
        a\r
        b\r
        c\r
        d\r
        e\r
        f\r
        g\r
    TestResults(failed=1, attempted=1)\r
\r
    >>> # With the flag:\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.REPORT_UDIFF\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        print '\n'.join('abcdefg')\r
    Differences (unified diff with -expected +actual):\r
        @@ -1,7 +1,7 @@\r
         a\r
        -B\r
        +b\r
         c\r
         d\r
        +e\r
         f\r
         g\r
        -h\r
    TestResults(failed=1, attempted=1)\r
\r
The REPORT_CDIFF flag causes failures that involve multi-line expected\r
and actual outputs to be displayed using a context diff:\r
\r
    >>> # Reuse f() from the REPORT_UDIFF example, above.\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.REPORT_CDIFF\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        print '\n'.join('abcdefg')\r
    Differences (context diff with expected followed by actual):\r
        ***************\r
        *** 1,7 ****\r
          a\r
        ! B\r
          c\r
          d\r
          f\r
          g\r
        - h\r
        --- 1,7 ----\r
          a\r
        ! b\r
          c\r
          d\r
        + e\r
          f\r
          g\r
    TestResults(failed=1, attempted=1)\r
\r
\r
The REPORT_NDIFF flag causes failures to use the difflib.Differ algorithm\r
used by the popular ndiff.py utility.  This does intraline difference\r
marking, as well as interline differences.\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> print "a b  c d e f g h i   j k l m"\r
    ...     a b c d e f g h i j k 1 m\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.REPORT_NDIFF\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 3, in f\r
    Failed example:\r
        print "a b  c d e f g h i   j k l m"\r
    Differences (ndiff with -expected +actual):\r
        - a b c d e f g h i j k 1 m\r
        ?                       ^\r
        + a b  c d e f g h i   j k l m\r
        ?     +              ++    ^\r
    TestResults(failed=1, attempted=1)\r
\r
The REPORT_ONLY_FIRST_FAILURE suppresses result output after the first\r
failing example:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> print 1 # first success\r
    ...     1\r
    ...     >>> print 2 # first failure\r
    ...     200\r
    ...     >>> print 3 # second failure\r
    ...     300\r
    ...     >>> print 4 # second success\r
    ...     4\r
    ...     >>> print 5 # third failure\r
    ...     500\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.REPORT_ONLY_FIRST_FAILURE\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 5, in f\r
    Failed example:\r
        print 2 # first failure\r
    Expected:\r
        200\r
    Got:\r
        2\r
    TestResults(failed=3, attempted=5)\r
\r
However, output from `report_start` is not suppressed:\r
\r
    >>> doctest.DocTestRunner(verbose=True, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    Trying:\r
        print 1 # first success\r
    Expecting:\r
        1\r
    ok\r
    Trying:\r
        print 2 # first failure\r
    Expecting:\r
        200\r
    **********************************************************************\r
    File ..., line 5, in f\r
    Failed example:\r
        print 2 # first failure\r
    Expected:\r
        200\r
    Got:\r
        2\r
    TestResults(failed=3, attempted=5)\r
\r
For the purposes of REPORT_ONLY_FIRST_FAILURE, unexpected exceptions\r
count as failures:\r
\r
    >>> def f(x):\r
    ...     r'''\r
    ...     >>> print 1 # first success\r
    ...     1\r
    ...     >>> raise ValueError(2) # first failure\r
    ...     200\r
    ...     >>> print 3 # second failure\r
    ...     300\r
    ...     >>> print 4 # second success\r
    ...     4\r
    ...     >>> print 5 # third failure\r
    ...     500\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> flags = doctest.REPORT_ONLY_FIRST_FAILURE\r
    >>> doctest.DocTestRunner(verbose=False, optionflags=flags).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 5, in f\r
    Failed example:\r
        raise ValueError(2) # first failure\r
    Exception raised:\r
        ...\r
        ValueError: 2\r
    TestResults(failed=3, attempted=5)\r
\r
New option flags can also be registered, via register_optionflag().  Here\r
we reach into doctest's internals a bit.\r
\r
    >>> unlikely = "UNLIKELY_OPTION_NAME"\r
    >>> unlikely in doctest.OPTIONFLAGS_BY_NAME\r
    False\r
    >>> new_flag_value = doctest.register_optionflag(unlikely)\r
    >>> unlikely in doctest.OPTIONFLAGS_BY_NAME\r
    True\r
\r
Before 2.4.4/2.5, registering a name more than once erroneously created\r
more than one flag value.  Here we verify that's fixed:\r
\r
    >>> redundant_flag_value = doctest.register_optionflag(unlikely)\r
    >>> redundant_flag_value == new_flag_value\r
    True\r
\r
Clean up.\r
    >>> del doctest.OPTIONFLAGS_BY_NAME[unlikely]\r
\r
    """\r
\r
    def option_directives(): r"""\r
Tests of `DocTestRunner`'s option directive mechanism.\r
\r
Option directives can be used to turn option flags on or off for a\r
single example.  To turn an option on for an example, follow that\r
example with a comment of the form ``# doctest: +OPTION``:\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)       # should fail: no ellipsis\r
    ...     [0, 1, ..., 9]\r
    ...\r
    ...     >>> print range(10)       # doctest: +ELLIPSIS\r
    ...     [0, 1, ..., 9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(10)       # should fail: no ellipsis\r
    Expected:\r
        [0, 1, ..., 9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=1, attempted=2)\r
\r
To turn an option off for an example, follow that example with a\r
comment of the form ``# doctest: -OPTION``:\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)\r
    ...     [0, 1, ..., 9]\r
    ...\r
    ...     >>> # should fail: no ellipsis\r
    ...     >>> print range(10)       # doctest: -ELLIPSIS\r
    ...     [0, 1, ..., 9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False,\r
    ...                       optionflags=doctest.ELLIPSIS).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 6, in f\r
    Failed example:\r
        print range(10)       # doctest: -ELLIPSIS\r
    Expected:\r
        [0, 1, ..., 9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=1, attempted=2)\r
\r
Option directives affect only the example that they appear with; they\r
do not change the options for surrounding examples:\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)       # Should fail: no ellipsis\r
    ...     [0, 1, ..., 9]\r
    ...\r
    ...     >>> print range(10)       # doctest: +ELLIPSIS\r
    ...     [0, 1, ..., 9]\r
    ...\r
    ...     >>> print range(10)       # Should fail: no ellipsis\r
    ...     [0, 1, ..., 9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(10)       # Should fail: no ellipsis\r
    Expected:\r
        [0, 1, ..., 9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    **********************************************************************\r
    File ..., line 8, in f\r
    Failed example:\r
        print range(10)       # Should fail: no ellipsis\r
    Expected:\r
        [0, 1, ..., 9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=2, attempted=3)\r
\r
Multiple options may be modified by a single option directive.  They\r
may be separated by whitespace, commas, or both:\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)       # Should fail\r
    ...     [0, 1,  ...,   9]\r
    ...     >>> print range(10)       # Should succeed\r
    ...     ... # doctest: +ELLIPSIS +NORMALIZE_WHITESPACE\r
    ...     [0, 1,  ...,   9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(10)       # Should fail\r
    Expected:\r
        [0, 1,  ...,   9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=1, attempted=2)\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)       # Should fail\r
    ...     [0, 1,  ...,   9]\r
    ...     >>> print range(10)       # Should succeed\r
    ...     ... # doctest: +ELLIPSIS,+NORMALIZE_WHITESPACE\r
    ...     [0, 1,  ...,   9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(10)       # Should fail\r
    Expected:\r
        [0, 1,  ...,   9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=1, attempted=2)\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)       # Should fail\r
    ...     [0, 1,  ...,   9]\r
    ...     >>> print range(10)       # Should succeed\r
    ...     ... # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE\r
    ...     [0, 1,  ...,   9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File ..., line 2, in f\r
    Failed example:\r
        print range(10)       # Should fail\r
    Expected:\r
        [0, 1,  ...,   9]\r
    Got:\r
        [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\r
    TestResults(failed=1, attempted=2)\r
\r
The option directive may be put on the line following the source, as\r
long as a continuation prompt is used:\r
\r
    >>> def f(x): r'''\r
    ...     >>> print range(10)\r
    ...     ... # doctest: +ELLIPSIS\r
    ...     [0, 1, ..., 9]\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
For examples with multi-line source, the option directive may appear\r
at the end of any line:\r
\r
    >>> def f(x): r'''\r
    ...     >>> for x in range(10): # doctest: +ELLIPSIS\r
    ...     ...     print x,\r
    ...     0 1 2 ... 9\r
    ...\r
    ...     >>> for x in range(10):\r
    ...     ...     print x,        # doctest: +ELLIPSIS\r
    ...     0 1 2 ... 9\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=2)\r
\r
If more than one line of an example with multi-line source has an\r
option directive, then they are combined:\r
\r
    >>> def f(x): r'''\r
    ...     Should fail (option directive not on the last line):\r
    ...         >>> for x in range(10): # doctest: +ELLIPSIS\r
    ...         ...     print x,        # doctest: +NORMALIZE_WHITESPACE\r
    ...         0  1    2...9\r
    ...     '''\r
    >>> test = doctest.DocTestFinder().find(f)[0]\r
    >>> doctest.DocTestRunner(verbose=False).run(test)\r
    TestResults(failed=0, attempted=1)\r
\r
It is an error to have a comment of the form ``# doctest:`` that is\r
*not* followed by words of the form ``+OPTION`` or ``-OPTION``, where\r
``OPTION`` is an option that has been registered with\r
`register_option`:\r
\r
    >>> # Error: Option not registered\r
    >>> s = '>>> print 12   #doctest: +BADOPTION'\r
    >>> test = doctest.DocTestParser().get_doctest(s, {}, 's', 's.py', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 1 of the doctest for s has an invalid option: '+BADOPTION'\r
\r
    >>> # Error: No + or - prefix\r
    >>> s = '>>> print 12   #doctest: ELLIPSIS'\r
    >>> test = doctest.DocTestParser().get_doctest(s, {}, 's', 's.py', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 1 of the doctest for s has an invalid option: 'ELLIPSIS'\r
\r
It is an error to use an option directive on a line that contains no\r
source:\r
\r
    >>> s = '>>> # doctest: +ELLIPSIS'\r
    >>> test = doctest.DocTestParser().get_doctest(s, {}, 's', 's.py', 0)\r
    Traceback (most recent call last):\r
    ValueError: line 0 of the doctest for s has an option directive on a line with no example: '# doctest: +ELLIPSIS'\r
\r
    """\r
\r
    def test_unicode_output(self): r"""\r
\r
Check that unicode output works:\r
\r
    >>> u'\xe9'\r
    u'\xe9'\r
\r
If we return unicode, SpoofOut's buf variable becomes automagically\r
converted to unicode. This means all subsequent output becomes converted\r
to unicode, and if the output contains non-ascii characters that failed.\r
It used to be that this state change carried on between tests, meaning\r
tests would fail if unicode has been output previously in the testrun.\r
This test tests that this is no longer so:\r
\r
    >>> print u'abc'\r
    abc\r
\r
And then return a string with non-ascii characters:\r
\r
    >>> print u'\xe9'.encode('utf-8')\r
    é\r
\r
    """\r
\r
\r
def test_testsource(): r"""\r
Unit tests for `testsource()`.\r
\r
The testsource() function takes a module and a name, finds the (first)\r
test with that name in that module, and converts it to a script. The\r
example code is converted to regular Python code.  The surrounding\r
words and expected output are converted to comments:\r
\r
    >>> import test.test_doctest\r
    >>> name = 'test.test_doctest.sample_func'\r
    >>> print doctest.testsource(test.test_doctest, name)\r
    # Blah blah\r
    #\r
    print sample_func(22)\r
    # Expected:\r
    ## 44\r
    #\r
    # Yee ha!\r
    <BLANKLINE>\r
\r
    >>> name = 'test.test_doctest.SampleNewStyleClass'\r
    >>> print doctest.testsource(test.test_doctest, name)\r
    print '1\n2\n3'\r
    # Expected:\r
    ## 1\r
    ## 2\r
    ## 3\r
    <BLANKLINE>\r
\r
    >>> name = 'test.test_doctest.SampleClass.a_classmethod'\r
    >>> print doctest.testsource(test.test_doctest, name)\r
    print SampleClass.a_classmethod(10)\r
    # Expected:\r
    ## 12\r
    print SampleClass(0).a_classmethod(10)\r
    # Expected:\r
    ## 12\r
    <BLANKLINE>\r
"""\r
\r
def test_debug(): r"""\r
\r
Create a docstring that we want to debug:\r
\r
    >>> s = '''\r
    ...     >>> x = 12\r
    ...     >>> print x\r
    ...     12\r
    ...     '''\r
\r
Create some fake stdin input, to feed to the debugger:\r
\r
    >>> import tempfile\r
    >>> real_stdin = sys.stdin\r
    >>> sys.stdin = _FakeInput(['next', 'print x', 'continue'])\r
\r
Run the debugger on the docstring, and then restore sys.stdin.\r
\r
    >>> try: doctest.debug_src(s)\r
    ... finally: sys.stdin = real_stdin\r
    > <string>(1)<module>()\r
    (Pdb) next\r
    12\r
    --Return--\r
    > <string>(1)<module>()->None\r
    (Pdb) print x\r
    12\r
    (Pdb) continue\r
\r
"""\r
\r
def test_pdb_set_trace():\r
    """Using pdb.set_trace from a doctest.\r
\r
    You can use pdb.set_trace from a doctest.  To do so, you must\r
    retrieve the set_trace function from the pdb module at the time\r
    you use it.  The doctest module changes sys.stdout so that it can\r
    capture program output.  It also temporarily replaces pdb.set_trace\r
    with a version that restores stdout.  This is necessary for you to\r
    see debugger output.\r
\r
      >>> doc = '''\r
      ... >>> x = 42\r
      ... >>> raise Exception('clé')\r
      ... Traceback (most recent call last):\r
      ... Exception: clé\r
      ... >>> import pdb; pdb.set_trace()\r
      ... '''\r
      >>> parser = doctest.DocTestParser()\r
      >>> test = parser.get_doctest(doc, {}, "foo-bär@baz", "foo-bär@baz.py", 0)\r
      >>> runner = doctest.DocTestRunner(verbose=False)\r
\r
    To demonstrate this, we'll create a fake standard input that\r
    captures our debugger input:\r
\r
      >>> import tempfile\r
      >>> real_stdin = sys.stdin\r
      >>> sys.stdin = _FakeInput([\r
      ...    'print x',  # print data defined by the example\r
      ...    'continue', # stop debugging\r
      ...    ''])\r
\r
      >>> try: runner.run(test)\r
      ... finally: sys.stdin = real_stdin\r
      --Return--\r
      > <doctest foo-bär@baz[2]>(1)<module>()->None\r
      -> import pdb; pdb.set_trace()\r
      (Pdb) print x\r
      42\r
      (Pdb) continue\r
      TestResults(failed=0, attempted=3)\r
\r
      You can also put pdb.set_trace in a function called from a test:\r
\r
      >>> def calls_set_trace():\r
      ...    y=2\r
      ...    import pdb; pdb.set_trace()\r
\r
      >>> doc = '''\r
      ... >>> x=1\r
      ... >>> calls_set_trace()\r
      ... '''\r
      >>> test = parser.get_doctest(doc, globals(), "foo-bär@baz", "foo-bär@baz.py", 0)\r
      >>> real_stdin = sys.stdin\r
      >>> sys.stdin = _FakeInput([\r
      ...    'print y',  # print data defined in the function\r
      ...    'up',       # out of function\r
      ...    'print x',  # print data defined by the example\r
      ...    'continue', # stop debugging\r
      ...    ''])\r
\r
      >>> try:\r
      ...     runner.run(test)\r
      ... finally:\r
      ...     sys.stdin = real_stdin\r
      --Return--\r
      > <doctest test.test_doctest.test_pdb_set_trace[8]>(3)calls_set_trace()->None\r
      -> import pdb; pdb.set_trace()\r
      (Pdb) print y\r
      2\r
      (Pdb) up\r
      > <doctest foo-bär@baz[1]>(1)<module>()\r
      -> calls_set_trace()\r
      (Pdb) print x\r
      1\r
      (Pdb) continue\r
      TestResults(failed=0, attempted=2)\r
\r
    During interactive debugging, source code is shown, even for\r
    doctest examples:\r
\r
      >>> doc = '''\r
      ... >>> def f(x):\r
      ... ...     g(x*2)\r
      ... >>> def g(x):\r
      ... ...     print x+3\r
      ... ...     import pdb; pdb.set_trace()\r
      ... >>> f(3)\r
      ... '''\r
      >>> test = parser.get_doctest(doc, globals(), "foo-bär@baz", "foo-bär@baz.py", 0)\r
      >>> real_stdin = sys.stdin\r
      >>> sys.stdin = _FakeInput([\r
      ...    'list',     # list source from example 2\r
      ...    'next',     # return from g()\r
      ...    'list',     # list source from example 1\r
      ...    'next',     # return from f()\r
      ...    'list',     # list source from example 3\r
      ...    'continue', # stop debugging\r
      ...    ''])\r
      >>> try: runner.run(test)\r
      ... finally: sys.stdin = real_stdin\r
      ... # doctest: +NORMALIZE_WHITESPACE\r
      --Return--\r
      > <doctest foo-bär@baz[1]>(3)g()->None\r
      -> import pdb; pdb.set_trace()\r
      (Pdb) list\r
        1     def g(x):\r
        2         print x+3\r
        3  ->     import pdb; pdb.set_trace()\r
      [EOF]\r
      (Pdb) next\r
      --Return--\r
      > <doctest foo-bär@baz[0]>(2)f()->None\r
      -> g(x*2)\r
      (Pdb) list\r
        1     def f(x):\r
        2  ->     g(x*2)\r
      [EOF]\r
      (Pdb) next\r
      --Return--\r
      > <doctest foo-bär@baz[2]>(1)<module>()->None\r
      -> f(3)\r
      (Pdb) list\r
        1  -> f(3)\r
      [EOF]\r
      (Pdb) continue\r
      **********************************************************************\r
      File "foo-bär@baz.py", line 7, in foo-bär@baz\r
      Failed example:\r
          f(3)\r
      Expected nothing\r
      Got:\r
          9\r
      TestResults(failed=1, attempted=3)\r
      """\r
\r
def test_pdb_set_trace_nested():\r
    """This illustrates more-demanding use of set_trace with nested functions.\r
\r
    >>> class C(object):\r
    ...     def calls_set_trace(self):\r
    ...         y = 1\r
    ...         import pdb; pdb.set_trace()\r
    ...         self.f1()\r
    ...         y = 2\r
    ...     def f1(self):\r
    ...         x = 1\r
    ...         self.f2()\r
    ...         x = 2\r
    ...     def f2(self):\r
    ...         z = 1\r
    ...         z = 2\r
\r
    >>> calls_set_trace = C().calls_set_trace\r
\r
    >>> doc = '''\r
    ... >>> a = 1\r
    ... >>> calls_set_trace()\r
    ... '''\r
    >>> parser = doctest.DocTestParser()\r
    >>> runner = doctest.DocTestRunner(verbose=False)\r
    >>> test = parser.get_doctest(doc, globals(), "foo-bär@baz", "foo-bär@baz.py", 0)\r
    >>> real_stdin = sys.stdin\r
    >>> sys.stdin = _FakeInput([\r
    ...    'print y',  # print data defined in the function\r
    ...    'step', 'step', 'step', 'step', 'step', 'step', 'print z',\r
    ...    'up', 'print x',\r
    ...    'up', 'print y',\r
    ...    'up', 'print foo',\r
    ...    'continue', # stop debugging\r
    ...    ''])\r
\r
    >>> try:\r
    ...     runner.run(test)\r
    ... finally:\r
    ...     sys.stdin = real_stdin\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(5)calls_set_trace()\r
    -> self.f1()\r
    (Pdb) print y\r
    1\r
    (Pdb) step\r
    --Call--\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(7)f1()\r
    -> def f1(self):\r
    (Pdb) step\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(8)f1()\r
    -> x = 1\r
    (Pdb) step\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(9)f1()\r
    -> self.f2()\r
    (Pdb) step\r
    --Call--\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(11)f2()\r
    -> def f2(self):\r
    (Pdb) step\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(12)f2()\r
    -> z = 1\r
    (Pdb) step\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(13)f2()\r
    -> z = 2\r
    (Pdb) print z\r
    1\r
    (Pdb) up\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(9)f1()\r
    -> self.f2()\r
    (Pdb) print x\r
    1\r
    (Pdb) up\r
    > <doctest test.test_doctest.test_pdb_set_trace_nested[0]>(5)calls_set_trace()\r
    -> self.f1()\r
    (Pdb) print y\r
    1\r
    (Pdb) up\r
    > <doctest foo-bär@baz[1]>(1)<module>()\r
    -> calls_set_trace()\r
    (Pdb) print foo\r
    *** NameError: name 'foo' is not defined\r
    (Pdb) continue\r
    TestResults(failed=0, attempted=2)\r
"""\r
\r
def test_DocTestSuite():\r
    """DocTestSuite creates a unittest test suite from a doctest.\r
\r
       We create a Suite by providing a module.  A module can be provided\r
       by passing a module object:\r
\r
         >>> import unittest\r
         >>> import test.sample_doctest\r
         >>> suite = doctest.DocTestSuite(test.sample_doctest)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=4>\r
\r
       We can also supply the module by name:\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=4>\r
\r
       We can use the current module:\r
\r
         >>> suite = test.sample_doctest.test_suite()\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=4>\r
\r
       We can supply global variables.  If we pass globs, they will be\r
       used instead of the module globals.  Here we'll pass an empty\r
       globals, triggering an extra error:\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest', globs={})\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=5>\r
\r
       Alternatively, we can provide extra globals.  Here we'll make an\r
       error go away by providing an extra global variable:\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest',\r
         ...                              extraglobs={'y': 1})\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=3>\r
\r
       You can pass option flags.  Here we'll cause an extra error\r
       by disabling the blank-line feature:\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest',\r
         ...                      optionflags=doctest.DONT_ACCEPT_BLANKLINE)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=5>\r
\r
       You can supply setUp and tearDown functions:\r
\r
         >>> def setUp(t):\r
         ...     import test.test_doctest\r
         ...     test.test_doctest.sillySetup = True\r
\r
         >>> def tearDown(t):\r
         ...     import test.test_doctest\r
         ...     del test.test_doctest.sillySetup\r
\r
       Here, we installed a silly variable that the test expects:\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest',\r
         ...      setUp=setUp, tearDown=tearDown)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=3>\r
\r
       But the tearDown restores sanity:\r
\r
         >>> import test.test_doctest\r
         >>> test.test_doctest.sillySetup\r
         Traceback (most recent call last):\r
         ...\r
         AttributeError: 'module' object has no attribute 'sillySetup'\r
\r
       The setUp and tearDown funtions are passed test objects. Here\r
       we'll use the setUp function to supply the missing variable y:\r
\r
         >>> def setUp(test):\r
         ...     test.globs['y'] = 1\r
\r
         >>> suite = doctest.DocTestSuite('test.sample_doctest', setUp=setUp)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=9 errors=0 failures=3>\r
\r
       Here, we didn't need to use a tearDown function because we\r
       modified the test globals, which are a copy of the\r
       sample_doctest module dictionary.  The test globals are\r
       automatically cleared for us after a test.\r
       """\r
\r
def test_DocFileSuite():\r
    """We can test tests found in text files using a DocFileSuite.\r
\r
       We create a suite by providing the names of one or more text\r
       files that include examples:\r
\r
         >>> import unittest\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=3>\r
\r
       The test files are looked for in the directory containing the\r
       calling module.  A package keyword argument can be provided to\r
       specify a different relative location.\r
\r
         >>> import unittest\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt',\r
         ...                              package='test')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=3>\r
\r
       Support for using a package's __loader__.get_data() is also\r
       provided.\r
\r
         >>> import unittest, pkgutil, test\r
         >>> added_loader = False\r
         >>> if not hasattr(test, '__loader__'):\r
         ...     test.__loader__ = pkgutil.get_loader(test)\r
         ...     added_loader = True\r
         >>> try:\r
         ...     suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                                  'test_doctest2.txt',\r
         ...                                  'test_doctest4.txt',\r
         ...                                  package='test')\r
         ...     suite.run(unittest.TestResult())\r
         ... finally:\r
         ...     if added_loader:\r
         ...         del test.__loader__\r
         <unittest.result.TestResult run=3 errors=0 failures=3>\r
\r
       '/' should be used as a path separator.  It will be converted\r
       to a native separator at run time:\r
\r
         >>> suite = doctest.DocFileSuite('../test/test_doctest.txt')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=1 errors=0 failures=1>\r
\r
       If DocFileSuite is used from an interactive session, then files\r
       are resolved relative to the directory of sys.argv[0]:\r
\r
         >>> import types, os.path, test.test_doctest\r
         >>> save_argv = sys.argv\r
         >>> sys.argv = [test.test_doctest.__file__]\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              package=types.ModuleType('__main__'))\r
         >>> sys.argv = save_argv\r
\r
       By setting `module_relative=False`, os-specific paths may be\r
       used (including absolute paths and paths relative to the\r
       working directory):\r
\r
         >>> # Get the absolute path of the test package.\r
         >>> test_doctest_path = os.path.abspath(test.test_doctest.__file__)\r
         >>> test_pkg_path = os.path.split(test_doctest_path)[0]\r
\r
         >>> # Use it to find the absolute path of test_doctest.txt.\r
         >>> test_file = os.path.join(test_pkg_path, 'test_doctest.txt')\r
\r
         >>> suite = doctest.DocFileSuite(test_file, module_relative=False)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=1 errors=0 failures=1>\r
\r
       It is an error to specify `package` when `module_relative=False`:\r
\r
         >>> suite = doctest.DocFileSuite(test_file, module_relative=False,\r
         ...                              package='test')\r
         Traceback (most recent call last):\r
         ValueError: Package may only be specified for module-relative paths.\r
\r
       You can specify initial global variables:\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt',\r
         ...                              globs={'favorite_color': 'blue'})\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=2>\r
\r
       In this case, we supplied a missing favorite color. You can\r
       provide doctest options:\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt',\r
         ...                         optionflags=doctest.DONT_ACCEPT_BLANKLINE,\r
         ...                              globs={'favorite_color': 'blue'})\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=3>\r
\r
       And, you can provide setUp and tearDown functions:\r
\r
         >>> def setUp(t):\r
         ...     import test.test_doctest\r
         ...     test.test_doctest.sillySetup = True\r
\r
         >>> def tearDown(t):\r
         ...     import test.test_doctest\r
         ...     del test.test_doctest.sillySetup\r
\r
       Here, we installed a silly variable that the test expects:\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt',\r
         ...                              setUp=setUp, tearDown=tearDown)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=2>\r
\r
       But the tearDown restores sanity:\r
\r
         >>> import test.test_doctest\r
         >>> test.test_doctest.sillySetup\r
         Traceback (most recent call last):\r
         ...\r
         AttributeError: 'module' object has no attribute 'sillySetup'\r
\r
       The setUp and tearDown funtions are passed test objects.\r
       Here, we'll use a setUp function to set the favorite color in\r
       test_doctest.txt:\r
\r
         >>> def setUp(test):\r
         ...     test.globs['favorite_color'] = 'blue'\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt', setUp=setUp)\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=1 errors=0 failures=0>\r
\r
       Here, we didn't need to use a tearDown function because we\r
       modified the test globals.  The test globals are\r
       automatically cleared for us after a test.\r
\r
       Tests in a file run using `DocFileSuite` can also access the\r
       `__file__` global, which is set to the name of the file\r
       containing the tests:\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest3.txt')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=1 errors=0 failures=0>\r
\r
       If the tests contain non-ASCII characters, we have to specify which\r
       encoding the file is encoded with. We do so by using the `encoding`\r
       parameter:\r
\r
         >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
         ...                              'test_doctest2.txt',\r
         ...                              'test_doctest4.txt',\r
         ...                              encoding='utf-8')\r
         >>> suite.run(unittest.TestResult())\r
         <unittest.result.TestResult run=3 errors=0 failures=2>\r
\r
       """\r
\r
def test_trailing_space_in_test():\r
    """\r
    Trailing spaces in expected output are significant:\r
\r
      >>> x, y = 'foo', ''\r
      >>> print x, y\r
      foo \n\r
    """\r
\r
\r
def test_unittest_reportflags():\r
    """Default unittest reporting flags can be set to control reporting\r
\r
    Here, we'll set the REPORT_ONLY_FIRST_FAILURE option so we see\r
    only the first failure of each test.  First, we'll look at the\r
    output without the flag.  The file test_doctest.txt file has two\r
    tests. They both fail if blank lines are disabled:\r
\r
      >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
      ...                          optionflags=doctest.DONT_ACCEPT_BLANKLINE)\r
      >>> import unittest\r
      >>> result = suite.run(unittest.TestResult())\r
      >>> print result.failures[0][1] # doctest: +ELLIPSIS\r
      Traceback ...\r
      Failed example:\r
          favorite_color\r
      ...\r
      Failed example:\r
          if 1:\r
      ...\r
\r
    Note that we see both failures displayed.\r
\r
      >>> old = doctest.set_unittest_reportflags(\r
      ...    doctest.REPORT_ONLY_FIRST_FAILURE)\r
\r
    Now, when we run the test:\r
\r
      >>> result = suite.run(unittest.TestResult())\r
      >>> print result.failures[0][1] # doctest: +ELLIPSIS\r
      Traceback ...\r
      Failed example:\r
          favorite_color\r
      Exception raised:\r
          ...\r
          NameError: name 'favorite_color' is not defined\r
      <BLANKLINE>\r
      <BLANKLINE>\r
\r
    We get only the first failure.\r
\r
    If we give any reporting options when we set up the tests,\r
    however:\r
\r
      >>> suite = doctest.DocFileSuite('test_doctest.txt',\r
      ...     optionflags=doctest.DONT_ACCEPT_BLANKLINE | doctest.REPORT_NDIFF)\r
\r
    Then the default eporting options are ignored:\r
\r
      >>> result = suite.run(unittest.TestResult())\r
      >>> print result.failures[0][1] # doctest: +ELLIPSIS\r
      Traceback ...\r
      Failed example:\r
          favorite_color\r
      ...\r
      Failed example:\r
          if 1:\r
             print 'a'\r
             print\r
             print 'b'\r
      Differences (ndiff with -expected +actual):\r
            a\r
          - <BLANKLINE>\r
          +\r
            b\r
      <BLANKLINE>\r
      <BLANKLINE>\r
\r
\r
    Test runners can restore the formatting flags after they run:\r
\r
      >>> ignored = doctest.set_unittest_reportflags(old)\r
\r
    """\r
\r
def test_testfile(): r"""\r
Tests for the `testfile()` function.  This function runs all the\r
doctest examples in a given file.  In its simple invokation, it is\r
called with the name of a file, which is taken to be relative to the\r
calling module.  The return value is (#failures, #tests).\r
\r
We don't want `-v` in sys.argv for these tests.\r
\r
    >>> save_argv = sys.argv\r
    >>> if '-v' in sys.argv:\r
    ...     sys.argv = [arg for arg in save_argv if arg != '-v']\r
\r
\r
    >>> doctest.testfile('test_doctest.txt') # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File "...", line 6, in test_doctest.txt\r
    Failed example:\r
        favorite_color\r
    Exception raised:\r
        ...\r
        NameError: name 'favorite_color' is not defined\r
    **********************************************************************\r
    1 items had failures:\r
       1 of   2 in test_doctest.txt\r
    ***Test Failed*** 1 failures.\r
    TestResults(failed=1, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
(Note: we'll be clearing doctest.master after each call to\r
`doctest.testfile`, to suppress warnings about multiple tests with the\r
same name.)\r
\r
Globals may be specified with the `globs` and `extraglobs` parameters:\r
\r
    >>> globs = {'favorite_color': 'blue'}\r
    >>> doctest.testfile('test_doctest.txt', globs=globs)\r
    TestResults(failed=0, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
    >>> extraglobs = {'favorite_color': 'red'}\r
    >>> doctest.testfile('test_doctest.txt', globs=globs,\r
    ...                  extraglobs=extraglobs) # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File "...", line 6, in test_doctest.txt\r
    Failed example:\r
        favorite_color\r
    Expected:\r
        'blue'\r
    Got:\r
        'red'\r
    **********************************************************************\r
    1 items had failures:\r
       1 of   2 in test_doctest.txt\r
    ***Test Failed*** 1 failures.\r
    TestResults(failed=1, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
The file may be made relative to a given module or package, using the\r
optional `module_relative` parameter:\r
\r
    >>> doctest.testfile('test_doctest.txt', globs=globs,\r
    ...                  module_relative='test')\r
    TestResults(failed=0, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
Verbosity can be increased with the optional `verbose` parameter:\r
\r
    >>> doctest.testfile('test_doctest.txt', globs=globs, verbose=True)\r
    Trying:\r
        favorite_color\r
    Expecting:\r
        'blue'\r
    ok\r
    Trying:\r
        if 1:\r
           print 'a'\r
           print\r
           print 'b'\r
    Expecting:\r
        a\r
        <BLANKLINE>\r
        b\r
    ok\r
    1 items passed all tests:\r
       2 tests in test_doctest.txt\r
    2 tests in 1 items.\r
    2 passed and 0 failed.\r
    Test passed.\r
    TestResults(failed=0, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
The name of the test may be specified with the optional `name`\r
parameter:\r
\r
    >>> doctest.testfile('test_doctest.txt', name='newname')\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File "...", line 6, in newname\r
    ...\r
    TestResults(failed=1, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
The summary report may be suppressed with the optional `report`\r
parameter:\r
\r
    >>> doctest.testfile('test_doctest.txt', report=False)\r
    ... # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File "...", line 6, in test_doctest.txt\r
    Failed example:\r
        favorite_color\r
    Exception raised:\r
        ...\r
        NameError: name 'favorite_color' is not defined\r
    TestResults(failed=1, attempted=2)\r
    >>> doctest.master = None  # Reset master.\r
\r
The optional keyword argument `raise_on_error` can be used to raise an\r
exception on the first error (which may be useful for postmortem\r
debugging):\r
\r
    >>> doctest.testfile('test_doctest.txt', raise_on_error=True)\r
    ... # doctest: +ELLIPSIS\r
    Traceback (most recent call last):\r
    UnexpectedException: ...\r
    >>> doctest.master = None  # Reset master.\r
\r
If the tests contain non-ASCII characters, the tests might fail, since\r
it's unknown which encoding is used. The encoding can be specified\r
using the optional keyword argument `encoding`:\r
\r
    >>> doctest.testfile('test_doctest4.txt') # doctest: +ELLIPSIS\r
    **********************************************************************\r
    File "...", line 7, in test_doctest4.txt\r
    Failed example:\r
        u'...'\r
    Expected:\r
        u'f\xf6\xf6'\r
    Got:\r
        u'f\xc3\xb6\xc3\xb6'\r
    **********************************************************************\r
    ...\r
    **********************************************************************\r
    1 items had failures:\r
       2 of   4 in test_doctest4.txt\r
    ***Test Failed*** 2 failures.\r
    TestResults(failed=2, attempted=4)\r
    >>> doctest.master = None  # Reset master.\r
\r
    >>> doctest.testfile('test_doctest4.txt', encoding='utf-8')\r
    TestResults(failed=0, attempted=4)\r
    >>> doctest.master = None  # Reset master.\r
\r
Switch the module encoding to 'utf-8' to test the verbose output without\r
bothering with the current sys.stdout encoding.\r
\r
    >>> doctest._encoding, saved_encoding = 'utf-8', doctest._encoding\r
    >>> doctest.testfile('test_doctest4.txt', encoding='utf-8', verbose=True)\r
    Trying:\r
        u'föö'\r
    Expecting:\r
        u'f\xf6\xf6'\r
    ok\r
    Trying:\r
        u'bąr'\r
    Expecting:\r
        u'b\u0105r'\r
    ok\r
    Trying:\r
        'föö'\r
    Expecting:\r
        'f\xc3\xb6\xc3\xb6'\r
    ok\r
    Trying:\r
        'bąr'\r
    Expecting:\r
        'b\xc4\x85r'\r
    ok\r
    1 items passed all tests:\r
       4 tests in test_doctest4.txt\r
    4 tests in 1 items.\r
    4 passed and 0 failed.\r
    Test passed.\r
    TestResults(failed=0, attempted=4)\r
    >>> doctest._encoding = saved_encoding\r
    >>> doctest.master = None  # Reset master.\r
    >>> sys.argv = save_argv\r
"""\r
\r
# old_test1, ... used to live in doctest.py, but cluttered it.  Note\r
# that these use the deprecated doctest.Tester, so should go away (or\r
# be rewritten) someday.\r
\r
def old_test1(): r"""\r
>>> from doctest import Tester\r
>>> t = Tester(globs={'x': 42}, verbose=0)\r
>>> t.runstring(r'''\r
...      >>> x = x * 2\r
...      >>> print x\r
...      42\r
... ''', 'XYZ')\r
**********************************************************************\r
Line 3, in XYZ\r
Failed example:\r
    print x\r
Expected:\r
    42\r
Got:\r
    84\r
TestResults(failed=1, attempted=2)\r
>>> t.runstring(">>> x = x * 2\n>>> print x\n84\n", 'example2')\r
TestResults(failed=0, attempted=2)\r
>>> t.summarize()\r
**********************************************************************\r
1 items had failures:\r
   1 of   2 in XYZ\r
***Test Failed*** 1 failures.\r
TestResults(failed=1, attempted=4)\r
>>> t.summarize(verbose=1)\r
1 items passed all tests:\r
   2 tests in example2\r
**********************************************************************\r
1 items had failures:\r
   1 of   2 in XYZ\r
4 tests in 2 items.\r
3 passed and 1 failed.\r
***Test Failed*** 1 failures.\r
TestResults(failed=1, attempted=4)\r
"""\r
\r
def old_test2(): r"""\r
        >>> from doctest import Tester\r
        >>> t = Tester(globs={}, verbose=1)\r
        >>> test = r'''\r
        ...    # just an example\r
        ...    >>> x = 1 + 2\r
        ...    >>> x\r
        ...    3\r
        ... '''\r
        >>> t.runstring(test, "Example")\r
        Running string Example\r
        Trying:\r
            x = 1 + 2\r
        Expecting nothing\r
        ok\r
        Trying:\r
            x\r
        Expecting:\r
            3\r
        ok\r
        0 of 2 examples failed in string Example\r
        TestResults(failed=0, attempted=2)\r
"""\r
\r
def old_test3(): r"""\r
        >>> from doctest import Tester\r
        >>> t = Tester(globs={}, verbose=0)\r
        >>> def _f():\r
        ...     '''Trivial docstring example.\r
        ...     >>> assert 2 == 2\r
        ...     '''\r
        ...     return 32\r
        ...\r
        >>> t.rundoc(_f)  # expect 0 failures in 1 example\r
        TestResults(failed=0, attempted=1)\r
"""\r
\r
def old_test4(): """\r
        >>> import types\r
        >>> m1 = types.ModuleType('_m1')\r
        >>> m2 = types.ModuleType('_m2')\r
        >>> test_data = \"""\r
        ... def _f():\r
        ...     '''>>> assert 1 == 1\r
        ...     '''\r
        ... def g():\r
        ...    '''>>> assert 2 != 1\r
        ...    '''\r
        ... class H:\r
        ...    '''>>> assert 2 > 1\r
        ...    '''\r
        ...    def bar(self):\r
        ...        '''>>> assert 1 < 2\r
        ...        '''\r
        ... \"""\r
        >>> exec test_data in m1.__dict__\r
        >>> exec test_data in m2.__dict__\r
        >>> m1.__dict__.update({"f2": m2._f, "g2": m2.g, "h2": m2.H})\r
\r
        Tests that objects outside m1 are excluded:\r
\r
        >>> from doctest import Tester\r
        >>> t = Tester(globs={}, verbose=0)\r
        >>> t.rundict(m1.__dict__, "rundict_test", m1)  # f2 and g2 and h2 skipped\r
        TestResults(failed=0, attempted=4)\r
\r
        Once more, not excluding stuff outside m1:\r
\r
        >>> t = Tester(globs={}, verbose=0)\r
        >>> t.rundict(m1.__dict__, "rundict_test_pvt")  # None are skipped.\r
        TestResults(failed=0, attempted=8)\r
\r
        The exclusion of objects from outside the designated module is\r
        meant to be invoked automagically by testmod.\r
\r
        >>> doctest.testmod(m1, verbose=False)\r
        TestResults(failed=0, attempted=4)\r
"""\r
\r
######################################################################\r
## Main\r
######################################################################\r
\r
def test_main():\r
    # Check the doctest cases in doctest itself:\r
    test_support.run_doctest(doctest, verbosity=True)\r
\r
    from test import test_doctest\r
\r
    # Ignore all warnings about the use of class Tester in this module.\r
    deprecations = [("class Tester is deprecated", DeprecationWarning)]\r
    if sys.py3kwarning:\r
        deprecations += [("backquote not supported", SyntaxWarning),\r
                         ("execfile.. not supported", DeprecationWarning)]\r
    with test_support.check_warnings(*deprecations):\r
        # Check the doctest cases defined here:\r
        test_support.run_doctest(test_doctest, verbosity=True)\r
\r
import sys\r
def test_coverage(coverdir):\r
    trace = test_support.import_module('trace')\r
    tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix,],\r
                         trace=0, count=1)\r
    tracer.run('reload(doctest); test_main()')\r
    r = tracer.results()\r
    print 'Writing coverage results...'\r
    r.write_results(show_missing=True, summary=True,\r
                    coverdir=coverdir)\r
\r
if __name__ == '__main__':\r
    if '-c' in sys.argv:\r
        test_coverage('/tmp/doctest.cover')\r
    else:\r
        test_main()\r