[C++][第三方库][gtest]详解

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

int Add(int x, int y)
{
    return x + y;
}

TEST(Plus_Test, Equal)
{
    ASSERT_EQ(Add(10, 10), 20);
}

TEST(ERROR_TEST, NE)
{
    ASSERT_EQ(Add(10, 10), 30);
}

TEST(EXPECT_TEXT, EXPECT)
{
    EXPECT_LT(Add(20, 20), 10);
  
    std::cout << "Output in EXPECT_TEST, but after EXPECT_LT" << std::endl;

    ASSERT_EQ(Add(10, 10), 30);

    std::cout << "Output in EXPECT_TEST" << std::endl;
}

int main(int argc, char* argv[])
{
    // Init Test Module
    testing::InitGoogleTest(&argc, argv);

    // Invokle all tests
    return RUN_ALL_TESTS();
}

main:main.cc
	g++ -o $@ $^ -std=c++17 -lgtest

.PHONY:clean
clean:
	rm main

$ ./main 
[==========] Running 3 tests from 3 test suites.
[----------] Global test environment set-up.
[----------] 1 test from Plus_Test
[ RUN      ] Plus_Test.Equal
[       OK ] Plus_Test.Equal (0 ms)
[----------] 1 test from Plus_Test (0 ms total)

[----------] 1 test from ERROR_TEST
[ RUN      ] ERROR_TEST.NE
main.cc:16: Failure
Expected equality of these values:
  Add(10, 10)
    Which is: 20
  30
[  FAILED  ] ERROR_TEST.NE (0 ms)
[----------] 1 test from ERROR_TEST (0 ms total)

[----------] 1 test from EXPECT_TEXT
[ RUN      ] EXPECT_TEXT.EXPECT
main.cc:21: Failure
Expected: (Add(20, 20)) < (10), actual: 40 vs 10
Output in EXPECT_TEST, but after EXPECT_LT
main.cc:25: Failure
Expected equality of these values:
  Add(10, 10)
    Which is: 20
  30
[  FAILED  ] EXPECT_TEXT.EXPECT (0 ms)
[----------] 1 test from EXPECT_TEXT (0 ms total)

[----------] Global test environment tear-down
[==========] 3 tests from 3 test suites ran. (0 ms total)
[  PASSED  ] 1 test.
[  FAILED  ] 2 tests, listed below:
[  FAILED  ] ERROR_TEST.NE
[  FAILED  ] EXPECT_TEXT.EXPECT

 2 FAILED TESTS