“Testing”

Go testing patterns for production-grade code: subtests, test helpers, fixtures, golden files, httptest, testcontainers, fuzz testing, and testing/synctest.

Playwright visual regression testing for the assistant Flutter SPA.

Offensive AI security testing and exploitation framework.

Build home-rolled A/B testing platform for Next.js 16 SaaS.

Select and run TypeScript SDK verification for packages, examples, type checks, linting, builds, Vitest suites, Effect v4 CLI tests, and runtime E2E tests.

Audit whether tests earn their maintenance cost and which suite owns each contract.

Test PHP behavior with PHPUnit/Pest, data providers, fixtures, and coverage gaps.

This skill should be used when the user asks to "test my specs", "validate my design docs", "find gaps in my architecture", "stress-test the spec", "vibe…

Provides testing strategy guidance including test pyramid, coverage targets, test patterns, and stack-specific test tooling.

Audits a test suite, or a named part, for low-value tests and marks each retain, fix, consolidate, or delete with verified removal evidence.

AI-driven testing agent that auto-discovers, generates, executes, evaluates, and fixes tests for any project type

Improve test value and feedback cost when auditing slow, flaky, redundant or brittle tests; choosing tests during implementation; or reviewing test changes…

List rule test IDs with filtering and stats.

Visual testing - catch invisible buttons, broken layouts, contrast

Produce a risk matrix or heatmap that quantifies what could break by business impact × probability, runs failure mode analysis on the top items, and maps test…

Swift Testing patterns — structs over classes, async confirmations, parameterized tests, exit tests, attachments, common agent mistakes.

Configures mewt or muton campaigns, analyzes surviving mutants, and investigates bugs exposed by testing gaps.

Test pyramid and testing strategy — unit, integration, and end-to-end test ratios, mocking strategies, test isolation, and what to test.

Install, migrate or refresh the canonical Testing Policy (Definition of Done) in the current project: the marked CLAUDE.md section, the generated reference…

The science of learning through controlled experimentation.

Execute QA test plans on Holoscan Sensor Bridge hardware.

Set up, scope, run, and analyze mutation-testing campaigns using project-compatible tools or bounded hand-selected mutations.

Implement A/B testing with feature flags, experiment frameworks, and statistical analysis

Configures mewt or muton mutation testing campaigns — scopes targets, tunes timeouts, and optimizes long-running runs.