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diff --git a/media/webrtc/trunk/testing/gtest/samples/sample1_unittest.cc b/media/webrtc/trunk/testing/gtest/samples/sample1_unittest.cc new file mode 100644 index 000000000..aefc4f1d8 --- /dev/null +++ b/media/webrtc/trunk/testing/gtest/samples/sample1_unittest.cc @@ -0,0 +1,153 @@ +// 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. + +// A sample program demonstrating using Google C++ testing framework. +// +// Author: wan@google.com (Zhanyong Wan) + + +// This sample shows how to write a simple unit test for a function, +// using Google C++ testing framework. +// +// Writing a unit test using Google C++ testing framework is easy as 1-2-3: + + +// Step 1. Include necessary header files such that the stuff your +// test logic needs is declared. +// +// Don't forget gtest.h, which declares the testing framework. + +#include <limits.h> +#include "sample1.h" +#include "gtest/gtest.h" + + +// Step 2. Use the TEST macro to define your tests. +// +// TEST has two parameters: the test case name and the test name. +// After using the macro, you should define your test logic between a +// pair of braces. You can use a bunch of macros to indicate the +// success or failure of a test. EXPECT_TRUE and EXPECT_EQ are +// examples of such macros. For a complete list, see gtest.h. +// +// <TechnicalDetails> +// +// In Google Test, tests are grouped into test cases. This is how we +// keep test code organized. You should put logically related tests +// into the same test case. +// +// The test case name and the test name should both be valid C++ +// identifiers. And you should not use underscore (_) in the names. +// +// Google Test guarantees that each test you define is run exactly +// once, but it makes no guarantee on the order the tests are +// executed. Therefore, you should write your tests in such a way +// that their results don't depend on their order. +// +// </TechnicalDetails> + + +// Tests Factorial(). + +// Tests factorial of negative numbers. +TEST(FactorialTest, Negative) { + // This test is named "Negative", and belongs to the "FactorialTest" + // test case. + EXPECT_EQ(1, Factorial(-5)); + EXPECT_EQ(1, Factorial(-1)); + EXPECT_GT(Factorial(-10), 0); + + // <TechnicalDetails> + // + // EXPECT_EQ(expected, actual) is the same as + // + // EXPECT_TRUE((expected) == (actual)) + // + // except that it will print both the expected value and the actual + // value when the assertion fails. This is very helpful for + // debugging. Therefore in this case EXPECT_EQ is preferred. + // + // On the other hand, EXPECT_TRUE accepts any Boolean expression, + // and is thus more general. + // + // </TechnicalDetails> +} + +// Tests factorial of 0. +TEST(FactorialTest, Zero) { + EXPECT_EQ(1, Factorial(0)); +} + +// Tests factorial of positive numbers. +TEST(FactorialTest, Positive) { + EXPECT_EQ(1, Factorial(1)); + EXPECT_EQ(2, Factorial(2)); + EXPECT_EQ(6, Factorial(3)); + EXPECT_EQ(40320, Factorial(8)); +} + + +// Tests IsPrime() + +// Tests negative input. +TEST(IsPrimeTest, Negative) { + // This test belongs to the IsPrimeTest test case. + + EXPECT_FALSE(IsPrime(-1)); + EXPECT_FALSE(IsPrime(-2)); + EXPECT_FALSE(IsPrime(INT_MIN)); +} + +// Tests some trivial cases. +TEST(IsPrimeTest, Trivial) { + EXPECT_FALSE(IsPrime(0)); + EXPECT_FALSE(IsPrime(1)); + EXPECT_TRUE(IsPrime(2)); + EXPECT_TRUE(IsPrime(3)); +} + +// Tests positive input. +TEST(IsPrimeTest, Positive) { + EXPECT_FALSE(IsPrime(4)); + EXPECT_TRUE(IsPrime(5)); + EXPECT_FALSE(IsPrime(6)); + EXPECT_TRUE(IsPrime(23)); +} + +// Step 3. Call RUN_ALL_TESTS() in main(). +// +// We do this by linking in src/gtest_main.cc file, which consists of +// a main() function which calls RUN_ALL_TESTS() for us. +// +// This runs all the tests you've defined, prints the result, and +// returns 0 if successful, or 1 otherwise. +// +// Did you notice that we didn't register the tests? The +// RUN_ALL_TESTS() macro magically knows about all the tests we +// defined. Isn't this convenient? |