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claude-config/rules/swift/testing.md
Yaojia Wang 2876cca8fe chore: initial backup of Claude Code configuration
Includes: CLAUDE.md, settings.json, agents, commands, rules, skills,
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and marketplace sources). Excludes credentials, runtime caches,
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---
paths:
- "**/*.swift"
- "**/Package.swift"
---
# Swift Testing
> This file extends [common/testing.md](../common/testing.md) with Swift specific content.
## Framework
Use **Swift Testing** (`import Testing`) for new tests. Use `@Test` and `#expect`:
```swift
@Test("User creation validates email")
func userCreationValidatesEmail() throws {
#expect(throws: ValidationError.invalidEmail) {
try User(email: "not-an-email")
}
}
```
## Test Isolation
Each test gets a fresh instance — set up in `init`, tear down in `deinit`. No shared mutable state between tests.
## Parameterized Tests
```swift
@Test("Validates formats", arguments: ["json", "xml", "csv"])
func validatesFormat(format: String) throws {
let parser = try Parser(format: format)
#expect(parser.isValid)
}
```
## Coverage
```bash
swift test --enable-code-coverage
```
## Reference
See skill: `swift-protocol-di-testing` for protocol-based dependency injection and mock patterns with Swift Testing.