GTest的安装与使用

#include<gtest/gtest.h>
int add(int a,int b){
    return a+b;
}
TEST(testCase,test0){
    EXPECT_EQ(add(2,3),5);
}
int main(int argc,char **argv){
  testing::InitGoogleTest(&argc,argv);
  return RUN_ALL_TESTS();
}

#include<gtest/gtest.h>
#include<map>
#include<iostream>
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();
}