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// 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.

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// 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

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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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//

// 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