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1 | // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) |
2 | // (C) Copyright 2004-2007 Jonathan Turkanis | |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) | |
5 | ||
6 | // See http://www.boost.org/libs/iostreams for documentation. | |
7 | ||
8 | #include "detail/filters.hpp" // Must come before operations.hpp for VC6. | |
9 | #include <boost/iostreams/categories.hpp> | |
10 | #include <boost/iostreams/constants.hpp> | |
11 | #include <boost/iostreams/device/null.hpp> | |
12 | #include <boost/iostreams/operations.hpp> | |
13 | #include <boost/test/test_tools.hpp> | |
14 | #include <boost/test/unit_test.hpp> | |
15 | ||
16 | using namespace std; | |
17 | using namespace boost::iostreams; | |
18 | using namespace boost::iostreams::test; | |
19 | using boost::unit_test::test_suite; | |
20 | ||
21 | struct optimally_buffered_filter { | |
22 | typedef char char_type; | |
23 | struct category | |
24 | : input_filter_tag, | |
25 | optimally_buffered_tag | |
26 | { }; | |
27 | std::streamsize optimal_buffer_size() const | |
28 | { return default_filter_buffer_size + 1; } | |
29 | }; | |
30 | ||
31 | void buffer_size_test() | |
32 | { | |
33 | // Test device buffer sizes. | |
34 | ||
35 | BOOST_CHECK_MESSAGE( | |
36 | optimal_buffer_size(null_source()) == default_device_buffer_size, | |
37 | "wrong buffer size for sourcer" | |
38 | ); | |
39 | BOOST_CHECK_MESSAGE( | |
40 | optimal_buffer_size(null_sink()) == default_device_buffer_size, | |
41 | "wrong buffer size for sink" | |
42 | ); | |
43 | ||
44 | // Test filter buffer sizes. | |
45 | ||
46 | BOOST_CHECK_MESSAGE( | |
47 | optimal_buffer_size(toupper_filter()) == default_filter_buffer_size, | |
48 | "wrong buffer size for input filter" | |
49 | ); | |
50 | BOOST_CHECK_MESSAGE( | |
51 | optimal_buffer_size(tolower_filter()) == default_filter_buffer_size, | |
52 | "wrong buffer size for output filter" | |
53 | ); | |
54 | BOOST_CHECK_MESSAGE( | |
55 | optimal_buffer_size(toupper_multichar_filter()) | |
56 | == | |
57 | default_filter_buffer_size, | |
58 | "wrong buffer size for multi-character input filter" | |
59 | ); | |
60 | BOOST_CHECK_MESSAGE( | |
61 | optimal_buffer_size(tolower_multichar_filter()) | |
62 | == | |
63 | default_filter_buffer_size, | |
64 | "wrong buffer size for multi-character output filter" | |
65 | ); | |
66 | ||
67 | // Test custom buffer size. | |
68 | ||
69 | BOOST_CHECK_MESSAGE( | |
70 | optimal_buffer_size(optimally_buffered_filter()) | |
71 | == | |
72 | optimally_buffered_filter().optimal_buffer_size(), | |
73 | "wrong buffer size for multi-character output filter" | |
74 | ); | |
75 | } | |
76 | ||
77 | test_suite* init_unit_test_suite(int, char* []) | |
78 | { | |
79 | test_suite* test = BOOST_TEST_SUITE("buffer_size test"); | |
80 | test->add(BOOST_TEST_CASE(&buffer_size_test)); | |
81 | return test; | |
82 | } |