Starting Test Driven Development [TDD]

For a serious developer, Test drive development is a must. It will save you from many difficult situations.
In this blog, we will see how to use Google Test framework for c++.

There could be two ways to include google test framework in your project.

• Download google test framework from GitHub, Build it and use it
• Use NuGet Package Manger in visual studio to install and use it

Starting with google test. A simple example

#include <iostream>

#include <gtest\gtest.h> // This file is required for google test

// Test Fixuture class

class TestAirthmatic:public testing::Test

{

public:

virtual void SetUp()override {}

virtual void TearDown()override {}

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

int divide(const int val, const int by)

{

return val / by;

}

};

// Writing test case

TEST_F(TestAirthmatic, Demo_passCase) { EXPECT_EQ(4, add(2, 2)); }// A demo test which will pass

TEST_F(TestAirthmatic, Demo_FailCase) { EXPECT_EQ(4, add(3, 2)); }// A demo test which will fail

TEST_F(TestAirthmatic, DISABLED_test) {} // A disabled test case

int main(int argc, char** argv)

{

testing::InitGoogleTest(&argc, argv);

return RUN_ALL_TESTS();

}

Output of Test is