ceph/src/jaegertracing/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/googletest/googletest/test/googletest-message-test.cc

   1 // Copyright 2005, Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
  13 // distribution.
  14 //     * Neither the name of Google Inc. nor the names of its
  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 //
  31 // Tests for the Message class.
  32
  33 #include "gtest/gtest-message.h"
  34
  35 #include "gtest/gtest.h"
  36
  37 namespace {
  38
  39 using ::testing::Message;
  40
  41 // Tests the testing::Message class
  42
  43 // Tests the default constructor.
  44 TEST(MessageTest, DefaultConstructor) {
  45   const Message msg;
  46   EXPECT_EQ("", msg.GetString());
  47 }
  48
  49 // Tests the copy constructor.
  50 TEST(MessageTest, CopyConstructor) {
  51   const Message msg1("Hello");
  52   const Message msg2(msg1);
  53   EXPECT_EQ("Hello", msg2.GetString());
  54 }
  55
  56 // Tests constructing a Message from a C-string.
  57 TEST(MessageTest, ConstructsFromCString) {
  58   Message msg("Hello");
  59   EXPECT_EQ("Hello", msg.GetString());
  60 }
  61
  62 // Tests streaming a float.
  63 TEST(MessageTest, StreamsFloat) {
  64   const std::string s = (Message() << 1.23456F << " " << 2.34567F).GetString();
  65   // Both numbers should be printed with enough precision.
  66   EXPECT_PRED_FORMAT2(testing::IsSubstring, "1.234560", s.c_str());
  67   EXPECT_PRED_FORMAT2(testing::IsSubstring, " 2.345669", s.c_str());
  68 }
  69
  70 // Tests streaming a double.
  71 TEST(MessageTest, StreamsDouble) {
  72   const std::string s = (Message() << 1260570880.4555497 << " "
  73                                   << 1260572265.1954534).GetString();
  74   // Both numbers should be printed with enough precision.
  75   EXPECT_PRED_FORMAT2(testing::IsSubstring, "1260570880.45", s.c_str());
  76   EXPECT_PRED_FORMAT2(testing::IsSubstring, " 1260572265.19", s.c_str());
  77 }
  78
  79 // Tests streaming a non-char pointer.
  80 TEST(MessageTest, StreamsPointer) {
  81   int n = 0;
  82   int* p = &n;
  83   EXPECT_NE("(null)", (Message() << p).GetString());
  84 }
  85
  86 // Tests streaming a NULL non-char pointer.
  87 TEST(MessageTest, StreamsNullPointer) {
  88   int* p = nullptr;
  89   EXPECT_EQ("(null)", (Message() << p).GetString());
  90 }
  91
  92 // Tests streaming a C string.
  93 TEST(MessageTest, StreamsCString) {
  94   EXPECT_EQ("Foo", (Message() << "Foo").GetString());
  95 }
  96
  97 // Tests streaming a NULL C string.
  98 TEST(MessageTest, StreamsNullCString) {
  99   char* p = nullptr;
 100   EXPECT_EQ("(null)", (Message() << p).GetString());
 101 }
 102
 103 // Tests streaming std::string.
 104 TEST(MessageTest, StreamsString) {
 105   const ::std::string str("Hello");
 106   EXPECT_EQ("Hello", (Message() << str).GetString());
 107 }
 108
 109 // Tests that we can output strings containing embedded NULs.
 110 TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
 111   const char char_array_with_nul[] =
 112       "Here's a NUL\0 and some more string";
 113   const ::std::string string_with_nul(char_array_with_nul,
 114                                       sizeof(char_array_with_nul) - 1);
 115   EXPECT_EQ("Here's a NUL\\0 and some more string",
 116             (Message() << string_with_nul).GetString());
 117 }
 118
 119 // Tests streaming a NUL char.
 120 TEST(MessageTest, StreamsNULChar) {
 121   EXPECT_EQ("\\0", (Message() << '\0').GetString());
 122 }
 123
 124 // Tests streaming int.
 125 TEST(MessageTest, StreamsInt) {
 126   EXPECT_EQ("123", (Message() << 123).GetString());
 127 }
 128
 129 // Tests that basic IO manipulators (endl, ends, and flush) can be
 130 // streamed to Message.
 131 TEST(MessageTest, StreamsBasicIoManip) {
 132   EXPECT_EQ("Line 1.\nA NUL char \\0 in line 2.",
 133                (Message() << "Line 1." << std::endl
 134                          << "A NUL char " << std::ends << std::flush
 135                          << " in line 2.").GetString());
 136 }
 137
 138 // Tests Message::GetString()
 139 TEST(MessageTest, GetString) {
 140   Message msg;
 141   msg << 1 << " lamb";
 142   EXPECT_EQ("1 lamb", msg.GetString());
 143 }
 144
 145 // Tests streaming a Message object to an ostream.
 146 TEST(MessageTest, StreamsToOStream) {
 147   Message msg("Hello");
 148   ::std::stringstream ss;
 149   ss << msg;
 150   EXPECT_EQ("Hello", testing::internal::StringStreamToString(&ss));
 151 }
 152
 153 // Tests that a Message object doesn't take up too much stack space.
 154 TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
 155   EXPECT_LE(sizeof(Message), 16U);
 156 }
 157
 158 }  // namespace