golang-stretchr-testify

In Go testify, assert records failures and continues test execution, while require stops execution immediately upon failure. Require is recommended for critical setup checks where continuing would cause panics, and assert is better for collecting multiple failures in one test.

To create mock expectations with testify, you instantiate a mock struct, call its ExpectMethods to define expected calls and arguments, then assert expectations were met with mock.AssertExpectations. This verifies your code interacted with dependencies correctly during the test.

To set up a testify test suite in Go, you embed suite.Suite in your struct, write SetupTest and TearDownTest lifecycle methods, and run the suite with suite.Run. This provides shared setup and teardown across multiple test methods.

Yes, testify supports eventual consistency checks in Go tests through Eventually and EventualWithT. These functions repeatedly evaluate a condition over a time duration, making them suitable for testing asynchronous operations or state changes that settle over time.

Common mistakes when writing Go tests with testify include using require where assert is better suited, failing to call mock.AssertExpectations to verify calls, and improper suite lifecycle management. Remedies include choosing assert to collect failures and ensuring setup logic uses require.

You need to import the stretchr/testify package in your Go project to use its mocks and suites. The package provides the mock and suite sub-packages required to define mock expectations and structure test suites without additional external dependencies.