/Unittests/googletest/test/gtest-message_test.cc

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 30// Author: wan@google.com (Zhanyong Wan)
 31//
 32// Tests for the Message class.
 33
 34#include <gtest/gtest-message.h>
 35
 36#include <gtest/gtest.h>
 37
 38namespace {
 39
 40using ::testing::Message;
 41using ::testing::internal::StrStream;
 42
 43// A helper function that turns a Message into a C string.
 44const char* ToCString(const Message& msg) {
 45  static testing::internal::String result;
 46  result = msg.GetString();
 47  return result.c_str();
 48}
 49
 50// Tests the testing::Message class
 51
 52// Tests the default constructor.
 53TEST(MessageTest, DefaultConstructor) {
 54  const Message msg;
 55  EXPECT_STREQ("", ToCString(msg));
 56}
 57
 58// Tests the copy constructor.
 59TEST(MessageTest, CopyConstructor) {
 60  const Message msg1("Hello");
 61  const Message msg2(msg1);
 62  EXPECT_STREQ("Hello", ToCString(msg2));
 63}
 64
 65// Tests constructing a Message from a C-string.
 66TEST(MessageTest, ConstructsFromCString) {
 67  Message msg("Hello");
 68  EXPECT_STREQ("Hello", ToCString(msg));
 69}
 70
 71// Tests streaming a non-char pointer.
 72TEST(MessageTest, StreamsPointer) {
 73  int n = 0;
 74  int* p = &n;
 75  EXPECT_STRNE("(null)", ToCString(Message() << p));
 76}
 77
 78// Tests streaming a NULL non-char pointer.
 79TEST(MessageTest, StreamsNullPointer) {
 80  int* p = NULL;
 81  EXPECT_STREQ("(null)", ToCString(Message() << p));
 82}
 83
 84// Tests streaming a C string.
 85TEST(MessageTest, StreamsCString) {
 86  EXPECT_STREQ("Foo", ToCString(Message() << "Foo"));
 87}
 88
 89// Tests streaming a NULL C string.
 90TEST(MessageTest, StreamsNullCString) {
 91  char* p = NULL;
 92  EXPECT_STREQ("(null)", ToCString(Message() << p));
 93}
 94
 95#if GTEST_HAS_STD_STRING
 96
 97// Tests streaming std::string.
 98//
 99// As std::string has problem in MSVC when exception is disabled, we only
100// test this where std::string can be used.
101TEST(MessageTest, StreamsString) {
102  const ::std::string str("Hello");
103  EXPECT_STREQ("Hello", ToCString(Message() << str));
104}
105
106// Tests that we can output strings containing embedded NULs.
107TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
108  const char char_array_with_nul[] =
109      "Here's a NUL\0 and some more string";
110  const ::std::string string_with_nul(char_array_with_nul,
111                                      sizeof(char_array_with_nul) - 1);
112  EXPECT_STREQ("Here's a NUL\\0 and some more string",
113               ToCString(Message() << string_with_nul));
114}
115
116#endif  // GTEST_HAS_STD_STRING
117
118// Tests streaming a NUL char.
119TEST(MessageTest, StreamsNULChar) {
120  EXPECT_STREQ("\\0", ToCString(Message() << '\0'));
121}
122
123// Tests streaming int.
124TEST(MessageTest, StreamsInt) {
125  EXPECT_STREQ("123", ToCString(Message() << 123));
126}
127
128// Tests that basic IO manipulators (endl, ends, and flush) can be
129// streamed to Message.
130TEST(MessageTest, StreamsBasicIoManip) {
131  EXPECT_STREQ("Line 1.\nA NUL char \\0 in line 2.",
132               ToCString(Message() << "Line 1." << std::endl
133                         << "A NUL char " << std::ends << std::flush
134                         << " in line 2."));
135}
136
137// Tests Message::GetString()
138TEST(MessageTest, GetString) {
139  Message msg;
140  msg << 1 << " lamb";
141  EXPECT_STREQ("1 lamb", msg.GetString().c_str());
142}
143
144// Tests streaming a Message object to an ostream.
145TEST(MessageTest, StreamsToOStream) {
146  Message msg("Hello");
147  StrStream ss;
148  ss << msg;
149  EXPECT_STREQ("Hello", testing::internal::StrStreamToString(&ss).c_str());
150}
151
152// Tests that a Message object doesn't take up too much stack space.
153TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
154  EXPECT_LE(sizeof(Message), 16U);
155}
156
157}  // namespace