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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
38 namespace {
39
40 using ::testing::Message;
41
42 // Tests the testing::Message class
43
44 // Tests the default constructor.
TEST(MessageTest,DefaultConstructor)45 TEST(MessageTest, DefaultConstructor) {
46 const Message msg;
47 EXPECT_EQ("", msg.GetString());
48 }
49
50 // Tests the copy constructor.
TEST(MessageTest,CopyConstructor)51 TEST(MessageTest, CopyConstructor) {
52 const Message msg1("Hello");
53 const Message msg2(msg1);
54 EXPECT_EQ("Hello", msg2.GetString());
55 }
56
57 // Tests constructing a Message from a C-string.
TEST(MessageTest,ConstructsFromCString)58 TEST(MessageTest, ConstructsFromCString) {
59 Message msg("Hello");
60 EXPECT_EQ("Hello", msg.GetString());
61 }
62
63 // Tests streaming a float.
TEST(MessageTest,StreamsFloat)64 TEST(MessageTest, StreamsFloat) {
65 const std::string s = (Message() << 1.23456F << " " << 2.34567F).GetString();
66 // Both numbers should be printed with enough precision.
67 EXPECT_PRED_FORMAT2(testing::IsSubstring, "1.234560", s.c_str());
68 EXPECT_PRED_FORMAT2(testing::IsSubstring, " 2.345669", s.c_str());
69 }
70
71 // Tests streaming a double.
TEST(MessageTest,StreamsDouble)72 TEST(MessageTest, StreamsDouble) {
73 const std::string s = (Message() << 1260570880.4555497 << " "
74 << 1260572265.1954534).GetString();
75 // Both numbers should be printed with enough precision.
76 EXPECT_PRED_FORMAT2(testing::IsSubstring, "1260570880.45", s.c_str());
77 EXPECT_PRED_FORMAT2(testing::IsSubstring, " 1260572265.19", s.c_str());
78 }
79
80 // Tests streaming a non-char pointer.
TEST(MessageTest,StreamsPointer)81 TEST(MessageTest, StreamsPointer) {
82 int n = 0;
83 int* p = &n;
84 EXPECT_NE("(null)", (Message() << p).GetString());
85 }
86
87 // Tests streaming a NULL non-char pointer.
TEST(MessageTest,StreamsNullPointer)88 TEST(MessageTest, StreamsNullPointer) {
89 int* p = NULL;
90 EXPECT_EQ("(null)", (Message() << p).GetString());
91 }
92
93 // Tests streaming a C string.
TEST(MessageTest,StreamsCString)94 TEST(MessageTest, StreamsCString) {
95 EXPECT_EQ("Foo", (Message() << "Foo").GetString());
96 }
97
98 // Tests streaming a NULL C string.
TEST(MessageTest,StreamsNullCString)99 TEST(MessageTest, StreamsNullCString) {
100 char* p = NULL;
101 EXPECT_EQ("(null)", (Message() << p).GetString());
102 }
103
104 // Tests streaming std::string.
TEST(MessageTest,StreamsString)105 TEST(MessageTest, StreamsString) {
106 const ::std::string str("Hello");
107 EXPECT_EQ("Hello", (Message() << str).GetString());
108 }
109
110 // Tests that we can output strings containing embedded NULs.
TEST(MessageTest,StreamsStringWithEmbeddedNUL)111 TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
112 const char char_array_with_nul[] =
113 "Here's a NUL\0 and some more string";
114 const ::std::string string_with_nul(char_array_with_nul,
115 sizeof(char_array_with_nul) - 1);
116 EXPECT_EQ("Here's a NUL\\0 and some more string",
117 (Message() << string_with_nul).GetString());
118 }
119
120 // Tests streaming a NUL char.
TEST(MessageTest,StreamsNULChar)121 TEST(MessageTest, StreamsNULChar) {
122 EXPECT_EQ("\\0", (Message() << '\0').GetString());
123 }
124
125 // Tests streaming int.
TEST(MessageTest,StreamsInt)126 TEST(MessageTest, StreamsInt) {
127 EXPECT_EQ("123", (Message() << 123).GetString());
128 }
129
130 // Tests that basic IO manipulators (endl, ends, and flush) can be
131 // streamed to Message.
TEST(MessageTest,StreamsBasicIoManip)132 TEST(MessageTest, StreamsBasicIoManip) {
133 EXPECT_EQ("Line 1.\nA NUL char \\0 in line 2.",
134 (Message() << "Line 1." << std::endl
135 << "A NUL char " << std::ends << std::flush
136 << " in line 2.").GetString());
137 }
138
139 // Tests Message::GetString()
TEST(MessageTest,GetString)140 TEST(MessageTest, GetString) {
141 Message msg;
142 msg << 1 << " lamb";
143 EXPECT_EQ("1 lamb", msg.GetString());
144 }
145
146 // Tests streaming a Message object to an ostream.
TEST(MessageTest,StreamsToOStream)147 TEST(MessageTest, StreamsToOStream) {
148 Message msg("Hello");
149 ::std::stringstream ss;
150 ss << msg;
151 EXPECT_EQ("Hello", testing::internal::StringStreamToString(&ss));
152 }
153
154 // Tests that a Message object doesn't take up too much stack space.
TEST(MessageTest,DoesNotTakeUpMuchStackSpace)155 TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
156 EXPECT_LE(sizeof(Message), 16U);
157 }
158
159 } // namespace
160