swift-testing

SKILL.md

This skill provides expert guidance on Swift Testing, covering the modern Swift Testing framework, test doubles (mocks, stubs, spies), fixtures, integration testing, snapshot testing, and migration from XCTest. Use this skill to help developers write reliable, maintainable tests following F.I.R.S.T. principles and Arrange-Act-Assert patterns.

When a developer needs testing guidance, follow this decision tree:

| Fast | Tests execute in milliseconds | Mock expensive operations | | Isolated | Tests don't depend on each other | Fresh instance per test | | Repeatable | Same result every time | Mock dates, network, external deps | | Self-Validating | Auto-report pass/fail | Use #expect, never rely on print() |

Fachkundige Anleitung zu Best Practices, Mustern und Implementierung von Swift Testing. Verwenden Sie diese Option, wenn Entwickler Folgendes erwähnen: (1) Swift Testing, @Test, #expect, #require oder @Suite, (2) „Swift Testing verwenden“ oder „moderne Testmuster“, (3) Testdoubles, Mocks, Stubs, Spione oder Fixtures, (4) Unit-Tests, Integrationstests oder Snapshot-Tests, (5) Migration von XCTest zu Swift Testing, (6) TDD, Arrange-Act-Assert oder F.I.R.S.T. Grundsätze, (7) parametrisierte Tests oder Testorganisation. Quelle: bocato/swift-testing-agent-skill.

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