Unit Test - GTest

How to add GTest into your project §

• TEST(TestSuiteName, TestName)
  • static void SetUpTestSuite()：在第一个TEST之前运行
  • static void TearDownTestSuite()：在最后一个TEST之后运行
• TEST_F(TestFixtureName, TestName)
  • virtual void SetUp()：在TEST_F中测试案例之前运行；
  • virtual void TearDown()：在TEST_F之后运行。

int main(int argc, char **argv) {
  printf("Running main() from %s\n", __FILE__);
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();   
}

GTest Macro §

Assertion §

• Success
• Non-fatal failure
• Fatal failure

Expect §

• EXPECT_EQ (==)
• EXPECT_NE (!=)
• EXPECT_LT (<)
• EXPECT_LE (<=)
• EXPECT_GT (>)
• EXPECT_GE (>=)

Sample code §

// in my_gtest_demo_1.cc
#include <gtest/gtest.h>
 
int add(int lhs, int rhs) { return lhs + rhs; }
 
int main(int argc, char const *argv[]) {
 
    EXPECT_EQ(add(1,1), 2); // PASS
    EXPECT_EQ(add(1,1), 1) << "FAILED: EXPECT: 2, but given 1";; // FAILDED
 
    return 0;
}

https://zhuanlan.zhihu.com/p/369466622