gtest - google unit testing framework

Primer

http://code.google.com/p/googletest/wiki/Primer

Simple test case

#include <gtest/gtest.h>

TEST(TestSuite, TestCase1)
{
    ASSERT_TRUE(expr);
}

TEST(TestSuite, TestCase2)
{
    ASSERT_TRUE(expr);
}

Get the main function for free

Link gtest_main.cc and you get RUN_ALL_TESTS free

What to do if a test fails

Abort the test on expression failure:

    ASSERT_TRUE(expr);

Continue the test on expression failure:

    EXPECT_TRUE(expr);

Floating point comparison:

    ASSERT_FLOAT_EQ(val1, val2);

    ASSERT_DOUBLE_EQ(val1, val2);

    ASSERT_NEAR(val1, val2, epsilon);

    EXPECT_FLOAT_EQ(val1, val2);

    EXPECT_DOUBLE_EQ(val1, val2);

    EXPECT_NEAR(val1, val2, epsilon);

Command line options

Repeat tests (useful for finding subtle race conditions)

    --gtest_repeat=1000 

Enter the debugger upon test failure

    --gtest_break_on_failure

Generate an xml report "foobar.xml"

    --gtest_output="xml:foobar"

Only run some tests

    --gtest_filter=TestSuite* // runs all suites matching TestSuite*

    --gtest_filter=TestSuite*-*.*2 // runs all suites matching TestSuite* except cases ending in '2'

    --gtest_filter=Foo*:Bar* // separate different reg-ex's with ':'