golang-stretchr-testify

Comprehensive guide to stretchr/testify for Golang testing. Covers assert, require, mock, and suite packages in depth. Use whenever writing tests with testify, creating mocks, setting up test suites, or choosing between assert and require. Essential for testify assertions, mock expectations, argument matchers, call verification, suite lifecycle, and advanced patterns like Eventually, JSONEq, and custom matchers. Trigger on any Go test file importing testify.

1.67x

Quality

89%

Does it follow best practices?

Impact

77%

1.67x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

90%

79%

Payment Gateway Integration Tests

Mock setup, matchers, and retry sequences

Criteria

Without context

With context

Mock embeds mock.Mock

100%

m.Called() forwarding

100%

mock.Anything usage

100%

mock.AnythingOfType usage

mock.MatchedBy predicate

100%

Retry: first call fails with .Once()

100%

Retry: second call succeeds with .Once()

100%

AssertExpectations called

100%

Call count verification

30%

100%

Error assertions use NoError/ErrorIs

100%

84%

Migrating User Repository Tests to a Testify Suite

Test suite lifecycle and launcher

Criteria

Without context

With context

suite.Suite embedded

100%

Launcher function present

100%

SetupTest for per-test init

100%

SetupSuite for one-time setup

100%

TearDown methods present

Test methods on suite receiver

100%

s.Require() for preconditions

100%

s.Equal/s.NoError for verifications

100%

All original tests covered

100%

No standalone test functions

57%

14%

Testing an Async Notification Delivery Service

Assert/require naming, async polling, wrapped errors

Criteria

Without context

With context

'is' naming for assert

100%

'must' naming for require

require for error/nil preconditions

80%

70%

assert for value verifications

75%

87%

EventuallyWithT (not Eventually)

CollectT callback parameter

Multiple assertions in callback

ErrorIs for wrapped errors

41%

100%

Pointer-safe struct comparison

100%

Correct argument order

100%

Repository: samber/cc-skills-golang
Commit: e9761db

Evaluated: 7 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Payment Gateway Integration Tests Migrating User Repository Tests to a Testify Suite Testing an Async Notification Delivery Service

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