Go Testing with Testify and TDD

Comprehensive guide for writing Go tests using stretchr/testify and following Test-Driven Development methodology.

Installation

go get github.com/stretchr/testify

Package	Purpose	When to Use
`testify/assert`	Assertions that continue on failure	Multiple independent checks in one test
`testify/require`	Assertions that halt on failure	Prerequisites that must pass to continue
`testify/mock`	Interface mocking	Isolating dependencies in unit tests
`testify/suite`	Test organization	Related tests sharing setup/teardown

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Jan 24, 2026

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