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29//
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 float.
72TEST(MessageTest, StreamsFloat) {
73  const char* const s = ToCString(Message() << 1.23456F << " " << 2.34567F);
74  // Both numbers should be printed with enough precision.
75  EXPECT_PRED_FORMAT2(testing::IsSubstring, "1.234560", s);
76  EXPECT_PRED_FORMAT2(testing::IsSubstring, " 2.345669", s);
77}
78
79// Tests streaming a double.
80TEST(MessageTest, StreamsDouble) {
81  const char* const s = ToCString(Message() << 1260570880.4555497 << " "
82                                  << 1260572265.1954534);
83  // Both numbers should be printed with enough precision.
84  EXPECT_PRED_FORMAT2(testing::IsSubstring, "1260570880.45", s);
85  EXPECT_PRED_FORMAT2(testing::IsSubstring, " 1260572265.19", s);
86}
87
88// Tests streaming a non-char pointer.
89TEST(MessageTest, StreamsPointer) {
90  int n = 0;
91  int* p = &n;
92  EXPECT_STRNE("(null)", ToCString(Message() << p));
93}
94
95// Tests streaming a NULL non-char pointer.
96TEST(MessageTest, StreamsNullPointer) {
97  int* p = NULL;
98  EXPECT_STREQ("(null)", ToCString(Message() << p));
99}
100
101// Tests streaming a C string.
102TEST(MessageTest, StreamsCString) {
103  EXPECT_STREQ("Foo", ToCString(Message() << "Foo"));
104}
105
106// Tests streaming a NULL C string.
107TEST(MessageTest, StreamsNullCString) {
108  char* p = NULL;
109  EXPECT_STREQ("(null)", ToCString(Message() << p));
110}
111
112// Tests streaming std::string.
113TEST(MessageTest, StreamsString) {
114  const ::std::string str("Hello");
115  EXPECT_STREQ("Hello", ToCString(Message() << str));
116}
117
118// Tests that we can output strings containing embedded NULs.
119TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
120  const char char_array_with_nul[] =
121      "Here's a NUL\0 and some more string";
122  const ::std::string string_with_nul(char_array_with_nul,
123                                      sizeof(char_array_with_nul) - 1);
124  EXPECT_STREQ("Here's a NUL\\0 and some more string",
125               ToCString(Message() << string_with_nul));
126}
127
128// Tests streaming a NUL char.
129TEST(MessageTest, StreamsNULChar) {
130  EXPECT_STREQ("\\0", ToCString(Message() << '\0'));
131}
132
133// Tests streaming int.
134TEST(MessageTest, StreamsInt) {
135  EXPECT_STREQ("123", ToCString(Message() << 123));
136}
137
138// Tests that basic IO manipulators (endl, ends, and flush) can be
139// streamed to Message.
140TEST(MessageTest, StreamsBasicIoManip) {
141  EXPECT_STREQ("Line 1.\nA NUL char \\0 in line 2.",
142               ToCString(Message() << "Line 1." << std::endl
143                         << "A NUL char " << std::ends << std::flush
144                         << " in line 2."));
145}
146
147// Tests Message::GetString()
148TEST(MessageTest, GetString) {
149  Message msg;
150  msg << 1 << " lamb";
151  EXPECT_STREQ("1 lamb", msg.GetString().c_str());
152}
153
154// Tests streaming a Message object to an ostream.
155TEST(MessageTest, StreamsToOStream) {
156  Message msg("Hello");
157  StrStream ss;
158  ss << msg;
159  EXPECT_STREQ("Hello", testing::internal::StrStreamToString(&ss).c_str());
160}
161
162// Tests that a Message object doesn't take up too much stack space.
163TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
164  EXPECT_LE(sizeof(Message), 16U);
165}
166
167}  // namespace
168