text: // Copyright 2005, Google Inc.
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //     * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  // Author: wan@google.com (Zhanyong Wan)
  //
  // Tests for the Message class.
  
  #include "gtest/gtest-message.h"
  
  #include "gtest/gtest.h"
  
  namespace {
  
  using ::testing::Message;
  
  // Tests the testing::Message class
  
  // Tests the default constructor.
  TEST(MessageTest, DefaultConstructor) {
    const Message msg;
    EXPECT_EQ("", msg.GetString());
  }
  
  // Tests the copy constructor.
  TEST(MessageTest, CopyConstructor) {
    const Message msg1("Hello");
    const Message msg2(msg1);
    EXPECT_EQ("Hello", msg2.GetString());
  }
  
  // Tests constructing a Message from a C-string.
  TEST(MessageTest, ConstructsFromCString) {
    Message msg("Hello");
    EXPECT_EQ("Hello", msg.GetString());
  }
  
  // Tests streaming a float.
  TEST(MessageTest, StreamsFloat) {
    const std::string s = (Message() << 1.23456F << " " << 2.34567F).GetString();
    // Both numbers should be printed with enough precision.
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "1.234560", s.c_str());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, " 2.345669", s.c_str());
  }
  
  // Tests streaming a double.
  TEST(MessageTest, StreamsDouble) {
    const std::string s = (Message() << 1260570880.4555497 << " "
                                    << 1260572265.1954534).GetString();
    // Both numbers should be printed with enough precision.
    EXPECT_PRED_FORMAT2(testing::IsSubstring, "1260570880.45", s.c_str());
    EXPECT_PRED_FORMAT2(testing::IsSubstring, " 1260572265.19", s.c_str());
  }
  
  // Tests streaming a non-char pointer.
  TEST(MessageTest, StreamsPointer) {
    int n = 0;
    int* p = &n;
    EXPECT_NE("(null)", (Message() << p).GetString());
  }
  
  // Tests streaming a NULL non-char pointer.
  TEST(MessageTest, StreamsNullPointer) {
    int* p = NULL;
    EXPECT_EQ("(null)", (Message() << p).GetString());
  }
  
  // Tests streaming a C string.
  TEST(MessageTest, StreamsCString) {
    EXPECT_EQ("Foo", (Message() << "Foo").GetString());
  }
  
  // Tests streaming a NULL C string.
  TEST(MessageTest, StreamsNullCString) {
    char* p = NULL;
    EXPECT_EQ("(null)", (Message() << p).GetString());
  }
  
  // Tests streaming std::string.
  TEST(MessageTest, StreamsString) {
    const ::std::string str("Hello");
    EXPECT_EQ("Hello", (Message() << str).GetString());
  }
  
  // Tests that we can output strings containing embedded NULs.
  TEST(MessageTest, StreamsStringWithEmbeddedNUL) {
    const char char_array_with_nul[] =
        "Here's a NUL\0 and some more string";
    const ::std::string string_with_nul(char_array_with_nul,
                                        sizeof(char_array_with_nul) - 1);
    EXPECT_EQ("Here's a NUL\\0 and some more string",
              (Message() << string_with_nul).GetString());
  }
  
  // Tests streaming a NUL char.
  TEST(MessageTest, StreamsNULChar) {
    EXPECT_EQ("\\0", (Message() << '\0').GetString());
  }
  
  // Tests streaming int.
  TEST(MessageTest, StreamsInt) {
    EXPECT_EQ("123", (Message() << 123).GetString());
  }
  
  // Tests that basic IO manipulators (endl, ends, and flush) can be
  // streamed to Message.
  TEST(MessageTest, StreamsBasicIoManip) {
    EXPECT_EQ("Line 1.\nA NUL char \\0 in line 2.",
                 (Message() << "Line 1." << std::endl
                           << "A NUL char " << std::ends << std::flush
                           << " in line 2.").GetString());
  }
  
  // Tests Message::GetString()
  TEST(MessageTest, GetString) {
    Message msg;
    msg << 1 << " lamb";
    EXPECT_EQ("1 lamb", msg.GetString());
  }
  
  // Tests streaming a Message object to an ostream.
  TEST(MessageTest, StreamsToOStream) {
    Message msg("Hello");
    ::std::stringstream ss;
    ss << msg;
    EXPECT_EQ("Hello", testing::internal::StringStreamToString(&ss));
  }
  
  // Tests that a Message object doesn't take up too much stack space.
  TEST(MessageTest, DoesNotTakeUpMuchStackSpace) {
    EXPECT_LE(sizeof(Message), 16U);
  }
  
  }  // namespace
  