gTest对参数化测试的支持

声明Test Fixture

#ifndef CLASS_UNDER_TEST_TEST_H
#define CLASS_UNDER_TEST_TEST_H
// In [ClassUnderTest]Test.h file.
#include <gtest/gtest.h>
// Test Fixture declaration.
class [ClassUnderTest]Test : public testing::TestWithParam<param_type>
{
protected:
    // Optional SetUp() and TearDown().
    virtual void SetUp();
    virtual void TearDown();
};
#endif

定义Test Method

// In [ClassUnderTest]Test.cpp file.
#include <gtest/gtest.h>
#include <hippomocks.h>
#include "[ClassUnderTest]Test.h"
// Optional SetUp() and TearDown().
void [ClassUnderTest]Test::SetUp()
{
    ...
}
void [ClassUnderTest]Test::TearDown()
{
    ...
}
// Test Method definition.
INSTANTIATE_TEST_CASE_P(prefix, [ClassUnderTest]Test, param_value_generator);
TEST_P([ClassUnderTest]Test, [Feature]_[Scenario]_[ExpectedBehavior])
{
    ClassUnderTest obj;
    param_type param = GetParam();
    result_type result = obj.SingleParam_MethodUnderTest(param);
    ASSERT_XX(result);
}
// Other Test Method definition.
TEST_F([ClassUnderTest]Test, [Feature]_[Scenario]_[ExpectedBehavior])
{
    ...
}

gTest所支持的参数值生成器

testing::Range(begin, end[, step])

范围在[begin, end)之间, 步长为step. step缺省为1.

testing::Values(val1, val2, ...)

范围为(val1, val2, ...).

testing::ValuesIn(array)
testing::ValuesIn(container)

范围由数组或STL容器给定.

testing::Bool()

范围为[false, true].