ceph/src/spawn/test/dependency/googletest/googletest/test/gtest_xml_test_utils.py

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  29
  30 """Unit test utilities for gtest_xml_output"""
  31
  32 import re
  33 from xml.dom import minidom, Node
  34 import gtest_test_utils
  35
  36 GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
  37
  38 class GTestXMLTestCase(gtest_test_utils.TestCase):
  39   """
  40   Base class for tests of Google Test's XML output functionality.
  41   """
  42
  43
  44   def AssertEquivalentNodes(self, expected_node, actual_node):
  45     """
  46     Asserts that actual_node (a DOM node object) is equivalent to
  47     expected_node (another DOM node object), in that either both of
  48     them are CDATA nodes and have the same value, or both are DOM
  49     elements and actual_node meets all of the following conditions:
  50
  51     *  It has the same tag name as expected_node.
  52     *  It has the same set of attributes as expected_node, each with
  53        the same value as the corresponding attribute of expected_node.
  54        Exceptions are any attribute named "time", which needs only be
  55        convertible to a floating-point number and any attribute named
  56        "type_param" which only has to be non-empty.
  57     *  It has an equivalent set of child nodes (including elements and
  58        CDATA sections) as expected_node.  Note that we ignore the
  59        order of the children as they are not guaranteed to be in any
  60        particular order.
  61     """
  62
  63     if expected_node.nodeType == Node.CDATA_SECTION_NODE:
  64       self.assertEquals(Node.CDATA_SECTION_NODE, actual_node.nodeType)
  65       self.assertEquals(expected_node.nodeValue, actual_node.nodeValue)
  66       return
  67
  68     self.assertEquals(Node.ELEMENT_NODE, actual_node.nodeType)
  69     self.assertEquals(Node.ELEMENT_NODE, expected_node.nodeType)
  70     self.assertEquals(expected_node.tagName, actual_node.tagName)
  71
  72     expected_attributes = expected_node.attributes
  73     actual_attributes   = actual_node  .attributes
  74     self.assertEquals(
  75         expected_attributes.length, actual_attributes.length,
  76         'attribute numbers differ in element %s:\nExpected: %r\nActual: %r' % (
  77             actual_node.tagName, expected_attributes.keys(),
  78             actual_attributes.keys()))
  79     for i in range(expected_attributes.length):
  80       expected_attr = expected_attributes.item(i)
  81       actual_attr   = actual_attributes.get(expected_attr.name)
  82       self.assert_(
  83           actual_attr is not None,
  84           'expected attribute %s not found in element %s' %
  85           (expected_attr.name, actual_node.tagName))
  86       self.assertEquals(
  87           expected_attr.value, actual_attr.value,
  88           ' values of attribute %s in element %s differ: %s vs %s' %
  89           (expected_attr.name, actual_node.tagName,
  90            expected_attr.value, actual_attr.value))
  91
  92     expected_children = self._GetChildren(expected_node)
  93     actual_children = self._GetChildren(actual_node)
  94     self.assertEquals(
  95         len(expected_children), len(actual_children),
  96         'number of child elements differ in element ' + actual_node.tagName)
  97     for child_id, child in expected_children.items():
  98       self.assert_(child_id in actual_children,
  99                    '<%s> is not in <%s> (in element %s)' %
 100                    (child_id, actual_children, actual_node.tagName))
 101       self.AssertEquivalentNodes(child, actual_children[child_id])
 102
 103   identifying_attribute = {
 104       'testsuites': 'name',
 105       'testsuite': 'name',
 106       'testcase': 'name',
 107       'failure': 'message',
 108       'property': 'name',
 109   }
 110
 111   def _GetChildren(self, element):
 112     """
 113     Fetches all of the child nodes of element, a DOM Element object.
 114     Returns them as the values of a dictionary keyed by the IDs of the
 115     children.  For <testsuites>, <testsuite>, <testcase>, and <property>
 116     elements, the ID is the value of their "name" attribute; for <failure>
 117     elements, it is the value of the "message" attribute; for <properties>
 118     elements, it is the value of their parent's "name" attribute plus the
 119     literal string "properties"; CDATA sections and non-whitespace
 120     text nodes are concatenated into a single CDATA section with ID
 121     "detail".  An exception is raised if any element other than the above
 122     four is encountered, if two child elements with the same identifying
 123     attributes are encountered, or if any other type of node is encountered.
 124     """
 125
 126     children = {}
 127     for child in element.childNodes:
 128       if child.nodeType == Node.ELEMENT_NODE:
 129         if child.tagName == 'properties':
 130           self.assert_(child.parentNode is not None,
 131                        'Encountered <properties> element without a parent')
 132           child_id = child.parentNode.getAttribute('name') + '-properties'
 133         else:
 134           self.assert_(child.tagName in self.identifying_attribute,
 135                        'Encountered unknown element <%s>' % child.tagName)
 136           child_id = child.getAttribute(
 137               self.identifying_attribute[child.tagName])
 138         self.assert_(child_id not in children)
 139         children[child_id] = child
 140       elif child.nodeType in [Node.TEXT_NODE, Node.CDATA_SECTION_NODE]:
 141         if 'detail' not in children:
 142           if (child.nodeType == Node.CDATA_SECTION_NODE or
 143               not child.nodeValue.isspace()):
 144             children['detail'] = child.ownerDocument.createCDATASection(
 145                 child.nodeValue)
 146         else:
 147           children['detail'].nodeValue += child.nodeValue
 148       else:
 149         self.fail('Encountered unexpected node type %d' % child.nodeType)
 150     return children
 151
 152   def NormalizeXml(self, element):
 153     """
 154     Normalizes Google Test's XML output to eliminate references to transient
 155     information that may change from run to run.
 156
 157     *  The "time" attribute of <testsuites>, <testsuite> and <testcase>
 158        elements is replaced with a single asterisk, if it contains
 159        only digit characters.
 160     *  The "timestamp" attribute of <testsuites> elements is replaced with a
 161        single asterisk, if it contains a valid ISO8601 datetime value.
 162     *  The "type_param" attribute of <testcase> elements is replaced with a
 163        single asterisk (if it sn non-empty) as it is the type name returned
 164        by the compiler and is platform dependent.
 165     *  The line info reported in the first line of the "message"
 166        attribute and CDATA section of <failure> elements is replaced with the
 167        file's basename and a single asterisk for the line number.
 168     *  The directory names in file paths are removed.
 169     *  The stack traces are removed.
 170     """
 171
 172     if element.tagName in ('testsuites', 'testsuite', 'testcase'):
 173       timestamp = element.getAttributeNode('timestamp')
 174       timestamp.value = re.sub(r'^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d$',
 175                                '*', timestamp.value)
 176     if element.tagName in ('testsuites', 'testsuite', 'testcase'):
 177       time = element.getAttributeNode('time')
 178       time.value = re.sub(r'^\d+(\.\d+)?$', '*', time.value)
 179       type_param = element.getAttributeNode('type_param')
 180       if type_param and type_param.value:
 181         type_param.value = '*'
 182     elif element.tagName == 'failure':
 183       source_line_pat = r'^.*[/\\](.*:)\d+\n'
 184       # Replaces the source line information with a normalized form.
 185       message = element.getAttributeNode('message')
 186       message.value = re.sub(source_line_pat, '\\1*\n', message.value)
 187       for child in element.childNodes:
 188         if child.nodeType == Node.CDATA_SECTION_NODE:
 189           # Replaces the source line information with a normalized form.
 190           cdata = re.sub(source_line_pat, '\\1*\n', child.nodeValue)
 191           # Removes the actual stack trace.
 192           child.nodeValue = re.sub(r'Stack trace:\n(.|\n)*',
 193                                    'Stack trace:\n*', cdata)
 194     for child in element.childNodes:
 195       if child.nodeType == Node.ELEMENT_NODE:
 196         self.NormalizeXml(child)