C++ Unit Testing: Google Test and Google Mock

Install Google Test across Linux, CMake, and Windows Visual Studio, and explore a sample project with a library and a test runner. Compare static and dynamic linking.

Create a minimal Google Test project on Linux to verify an add function using TEST and ASSERT_EQ, build with CMake or g++, and link Google Test (and pthread), enabling C++11.

Move the tested code into a common library and link it to both the test runner and the main application using CMake.

Explore the big picture of software testing, from unit testing and white-box approaches to integration and system testing, and understand functional, stress, load, and acceptance testing.

Explore the three-part unit test structure: arrange, act, and assert, including setup, execution, and verification. Emphasize single-behavior tests and avoid risky cleanup, for clearer, more maintainable code.

Explore unit testing with Google Test by building a count_positives function test suite using the TEST macro, arranging input vectors, performing actions, and asserting expected results.

Learn how fatal and non-fatal assertions control test flow in Google Test and Google Mock, using assert and expect to verify true, false, equal, not equal, and lower-than or greater-than.

Learn how to use assertions designed for C strings in Google Test, including cert_eq for equality, cert_str for content comparison (not pointers), and cert_str_case_eq for case-insensitive checks.

Learn to test exception behavior in Google Test using assert throw, assert any throw, and assert no throw to verify a function's exception type or absence of exceptions.

Use test fixtures to reuse setup and teardown when they are similar. A fixture is a class derived from the testing namespace's test class with overridable setup and teardown.

Demonstrates using a test fixture to share setup for testing an account class with deposit, withdraw, getBalance, and transfer, including setup, teardown, and fixture-based tests.

Leverage parameterized tests to run the same test body with different inputs by extending a param template class and instantiating test suite P with generators range, values, and combine.

Mastering mocking techniques to isolate tests by replacing dependencies with controllable objects, verify calls and parameters with matchers, using both old and new methods in Google Test and Google Mock.

Learn to mock methods by extending a class and using the mock method macro, covering return type, parameters, const and noexcept, plus legacy versus current versions in Google Mock.

Learn to define method behavior in Google Mock using on call and expect call, chaining actions, return values, and constraints like times and matchers to verify exact call patterns.

Demonstrates mocking with Google Test and Google Mock by validating updateSalary calls on a database connection, using EXPECT_CALL, exact invocation count, and the testing::_ matcher for flexible parameters.

Show how to configure Google Mock actions for specific mock calls, including throwing errors with WillOnce and testing::Throw, and using free functions, lambdas, bound member functions, or std::bind.

Configure the test project's properties and debugging command line arguments in Visual Studio to generate an xml report for Google Test.