Can I convert Swift Testing tests into XCTest tests automatically?

Yes, you can convert Swift Testing tests into XCTest tests, but there are some important considerations and steps to follow.

1. Consolidate Tests: When migrating multiple XCTest methods with a similar structure, you can consolidate them into one parameterized test in Swift Testing.
2. Global Test Functions: For any XCTest classes with only one test method, consider migrating them to a global test function.
3. Naming Conventions: The word "test" is no longer necessary at the beginning of test names in Swift Testing.
4. UI Automation and Performance Testing: Continue using XCTest for any tests that use UI automation APIs like XCUIApplication or performance testing APIs like XCTMetric, as these are not supported in Swift Testing.
5. Objective-C Tests: Use XCTest for any tests that can only be written in Objective-C.
6. Assertions: Avoid calling XCTest assertion functions from Swift Testing tests, or the opposite, the expect macro from XCTest tests.

For more detailed guidance, you can refer to the documentation on migrating a test from XCTest, which includes information on translating assertions and handling asynchronous waiting conditions.

For a deeper dive into the relationship between Swift Testing and XCTest, you can watch the session Meet Swift Testing (17:35).