google c++程序测试框架googletest使用教程详解

#include <iostream>
#include "gtest/gtest.h"

#pragma comment(lib, "gtestd.lib")

int add(int a, int b) 
{
    return a + b;
}

//编写测试case
TEST(testCase, test0) 
{
    EXPECT_EQ(add(2, 3), 5);   //判断结果是不是等于5，EXPECT_EQ表示 "等于"
}

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

#include <iostream>
#include <map>
#include "gtest/gtest.h"


#pragma comment(lib, "gtestd.lib")

using namespace std;


class Student 
{
public:
    Student() 
    {
        age = 0;
    }

    Student(int a) 
    {
        age = a;
    }

    void print() 
    {
        cout << "*********** " << age << " **********" << endl;;
    }

private:
    int age;
};

class FooEnvironment : public testing::Environment 
{
public:
    virtual void SetUp()
    {
        std::cout << "Foo FooEnvironment SetUP" << std::endl;
    }

    virtual void TearDown()
    {
        std::cout << "Foo FooEnvironment TearDown" << std::endl;
    }
};

static Student* s;

//在第一个test之前，最后一个test之后调用SetUpTestCase()和TearDownTestCase()
class TestMap :public testing::Test
{
public:
    static void SetUpTestCase()
    {
        cout << "SetUpTestCase()" << endl;
        s = new Student(23);
    }

    static void TearDownTestCase()
    {
        delete s;
        cout << "TearDownTestCase()" << endl;
    }

    void SetUp()
    {
        cout << "SetUp() is running" << endl;

    }

    void TearDown()
    {
        cout << "TearDown()" << endl;
    }
};

TEST_F(TestMap, Test1)
{
    // you can refer to s here
    s->print();
}

int main(int argc, char** argv)
{
    testing::AddGlobalTestEnvironment(new FooEnvironment);
    testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

#include<gtest/gtest.h>
// Returns true iff n is a prime number.
bool IsPrime(int n)
{
    // Trivial case 1: small numbers
    if (n <= 1) return false;
    // Trivial case 2: even numbers
    if (n % 2 == 0) return n == 2;
    // Now, we have that n is odd and n >= 3.
    // Try to divide n by every odd number i, starting from 3
    for (int i = 3; ; i += 2) {
        // We only have to try i up to the squre root of n
        if (i > n/i) break;
        // Now, we have i <= n/i < n.
        // If n is divisible by i, n is not prime.
        if (n % i == 0) return false;
    }
    // n has no integer factor in the range (1, n), and thus is prime.
    return true;
}

class IsPrimeParamTest : public::testing::TestWithParam<int>{};
TEST_P(IsPrimeParamTest, HandleTrueReturn)
{
 int n =  GetParam();
 EXPECT_TRUE(IsPrime(n));
}
//被测函数须传入多个相关的值
INSTANTIATE_TEST_CASE_P(TrueReturn, IsPrimeParamTest, testing::Values(3, 5, 11, 23, 17));
int main(int argc, char **argv)
{
    testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}