GTEST/GMOCK介绍与实战：Gtest Sample4

文章目录

• ​​1.简介​​
• ​​2.用法​​

1.简介

示例#4教你如何同时使用googletest和’ googletest.h ’

2.用法

CMakeLists.txt

cmake_minimum_required(VERSION 3.0.0)
project(hello_gtest VERSION 0.1.0)

add_executable(${PROJECT_NAME} sample.cc man.cc)
target_link_libraries(${PROJECT_NAME} gtest gmock pthread)

sample.h

// A sample program demonstrating using Google C++ testing framework.
#ifndef GOOGLETEST_SAMPLES_SAMPLE4_H_
#define GOOGLETEST_SAMPLES_SAMPLE4_H_

// A simple monotonic counter.
class Counter
{
private:
    int counter_;

public:
    // Creates a counter that starts at 0.
    Counter() : counter_(0) {}

    // Returns the current counter value, and increments it.
    int Increment();

    // Returns the current counter value, and decrements it.
    int Decrement();

    // Prints the current counter value to STDOUT.
    void Print() const;
};

#endif // GOOGLETEST_SAMPLES_SAMPLE4_H_

sample.cc

#include "sample.h"

#include <stdio.h>

// Returns the current counter value, and increments it.
int Counter::Increment() { return counter_++; }

// Returns the current counter value, and decrements it.
// counter can not be less than 0, return 0 in this case
int Counter::Decrement()
{
    if (counter_ == 0)
    {
        return counter_;
    }
    else
    {
        return counter_--;
    }
}

// Prints the current counter value to STDOUT.
void Counter::Print() const { printf("%d", counter_); }

sample_unittest.cc

#include "sample.h"

#include "gtest/gtest.h"

namespace
{
    // Tests the Increment() method.

    TEST(Counter, Increment)
    {
        Counter c;

        // Test that counter 0 returns 0
        EXPECT_EQ(0, c.Decrement());

        // EXPECT_EQ() evaluates its arguments exactly once, so they
        // can have side effects.

        EXPECT_EQ(0, c.Increment());
        EXPECT_EQ(1, c.Increment());
        EXPECT_EQ(2, c.Increment());

        EXPECT_EQ(3, c.Decrement());
    }

} // namespace

man.cc

#include <gtest/gtest.h>
#include <gmock/gmock.h>

int main(int argc, char *argv[])
{
    testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

• ref：gtest sample