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() |

有关 Swift 测试最佳实践、模式和实施的专家指导。当开发人员提及以下内容时使用：(1) Swift 测试、@Test、#expect、#require 或 @Suite，(2)“使用 Swift 测试”或“现代测试模式”，(3) 测试替身、模拟、存根、间谍或固定装置，(4) 单元测试、集成测试或快照测试，(5) 从 XCTest 迁移到 Swift 测试，(6) TDD、Arrange-Act-Assert 或第一。第一。原则，（7）参数化测试或测试组织。 来源：bocato/swift-testing-agent-skill。

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