golang-stretchr-testify

Use testify mocks by defining a mock struct, setting method expectations with matchers, and calling AssertExpectations to verify expected calls were made during the test.

The difference between assert and require is that assert logs failures and continues test execution, while require stops test execution immediately. Use require for checks like setup preconditions where continuing is impossible.

Structure testify suite setup and teardown by embedding suite.Suite, implementing SetupTest and TearDownTest methods, and launching with suite.Run to manage shared test lifecycle state across test cases.

Your testify mock never verifies expected calls when AssertExpectations is missing or argument matchers fail to align. Review expectation definitions and matchers to ensure calls match the configured arguments.

Yes, you can use testify EventuallyWithT for async polling in Go tests. It repeatedly executes assertions until they pass or a timeout occurs, making it suitable for testing asynchronous operations reliably.

The best way to compare error chains in testify assertions is using assert.ErrorIs. It checks if a specific error exists within the error chain, ensuring reliable error matching without fragile equality checks.