cmux-testing

Source excerpt starting at line 1.

1# Swift Testing Migration2 3Swift Testing for unit and integration tests; XCTest stays for UI tests under `cmuxUITests/` (Swift Testing has no `XCUIApplication` support).4 5## New tests6 7```swift8import Testing9 10@Suite11struct ExampleTests {12    @Test13    func computesValue() {14        #expect(1 + 1 == 2)15    }16}17```18 19Use `try #require(...)` when a value must be unwrapped before continuing.20 21## XCTest conversion mapping22 23Convert in place only when an edit naturally crosses the file; do not bulk-rewrite untouched tests.24 25| XCTest | Swift Testing |26|---|---|27| `XCTestCase` subclass | `@Suite struct` (or `@Suite final class` for a reference type) |28| `func testFoo()` | `@Test func foo()` |29| `XCTAssertEqual(a, b)` | `#expect(a == b)` |30| `XCTAssertTrue(cond)` | `#expect(cond)` |31| `XCTUnwrap(x)` | `try #require(x)` |32| `XCTFail("msg")` | `Issue.record("msg")` |33| `setUp()` | `init()` (async setup: `async init()`) |34| `tearDown()` | `deinit` |35 36## Parameterized tests37 38```swift39@Test(arguments: [40    ("input-a", "output-a"),41    ("input-b", "output-b"),42])43func formats(input: String, expected: String) {44    #expect(format(input) == expected)45}46```47 48## Parallel execution49 50Tests run in parallel by default, including across suites. Prefer isolated temp directories and injected dependencies; use `@Suite(.serialized)` only when a suite genuinely needs ordering or guards shared mutable state.51