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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