Go Testing

This teaches you to write Go tests the way Google and Uber do: table-driven tests with subtests, proper use of t.Error versus t.Fatal, and cmp.Diff for comparing complex types instead of assertion libraries. The normative guidance is opinionated but practical, like always printing "got" before "want" and never comparing error strings when you could check semantics with errors.Is. It includes a script to generate table test scaffolds and covers helpers, cleanup, and parallel execution. The "useful test failures" section nails something most guides skip: your error messages should be diagnosable without opening the source file.

skills.sh installs: 1.4K
GitHub stars: 193
last updated: Aug 21, 2026

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Install

$ npx -y skills add cxuu/golang-skills --skill go-testing --agent claude-code

Installs into .claude/skills of the current project.

Files

Go Testing

Compatibility: Diff examples may use github.com/google/go-cmp.

Resource Routing

scripts/gen-table-test.sh - Run when generating a table-driven test scaffold.
assets/table-test-template.go - Use as a copyable table-test starting point.
references/TABLE-DRIVEN-TESTS.md - Read when choosing table tests, subtests, or parallel test patterns.
references/TEST-HELPERS.md - Read when writing helpers, fixtures, cleanup, or test doubles.
references/TEST-ORGANIZATION.md - Read when structuring packages, black-box tests, or larger test suites.
references/VALIDATION-APIS.md - Read when choosing t.Error, t.Fatal, cmp.Diff, or assertion style.
references/INTEGRATION.md - Read when testing external services, HTTP handlers, databases, or long-running setup.