migrating ui tests using swift 6.2

ElementX.xcodeproj/project.pbxproj

@@ -9936,6 +9936,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "${BASE_BUNDLE_IDENTIFIER}.ui.tests";
 				PRODUCT_NAME = UITests;
 				SDKROOT = iphoneos;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_VERSION = 6.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TEST_TARGET_NAME = ElementX;
 			};
@@ -9957,6 +9959,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "${BASE_BUNDLE_IDENTIFIER}.ui.tests";
 				PRODUCT_NAME = UITests;
 				SDKROOT = iphoneos;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_VERSION = 6.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TEST_TARGET_NAME = ElementX;
 			};

ElementX/Sources/UITests/UITestsSignalling.swift

@@ -60,6 +60,7 @@ enum UITestsSignalling {
     /// - Within the app, create a `Client` in `app` mode. This will check that the tests are ready and echo back that the app is too.
     /// - Call `waitForApp()` in the tests when you need to send the signal. This will suspend execution until the app has signalled it is ready.
     /// - The two `Client` objects can now be used for two-way signalling.
+    @MainActor
     class Client {
         /// The file watcher responsible for receiving signals.
         private let fileWatcher: FileWatcher.Local

UITests/Sources/RoomScreenTests.swift

@@ -156,7 +156,10 @@ class RoomScreenUITests: XCTestCase {
     
     private func performOperation(_ operation: UITestsSignal.Timeline, using client: UITestsSignalling.Client) async throws {
         try client.send(.timeline(operation))
-        await _ = client.signals.values.first { $0 == .success }
+        // The type is not sendable so we can't use the first function directly on the values.
+        // So we need to make an async iterator which allows us to await a value on the same isolation context.
+        var iterator = client.signals.values.makeAsyncIterator()
+        while let signal = await iterator.next(isolation: #isolation), signal != .success { }
         try await Task.sleep(for: .seconds(2)) // Allow the timeline to update
     }
     

UITests/SupportingFiles/target.yml

@@ -48,6 +48,8 @@ targets:
       base:
         PRODUCT_NAME: UITests
         PRODUCT_BUNDLE_IDENTIFIER: ${BASE_BUNDLE_IDENTIFIER}.ui.tests
+        SWIFT_VERSION: 6.2
+        SWIFT_APPROACHABLE_CONCURRENCY: YES
       configs:
       # This is required to remove the $(inherited) flags
       # which would prevent SnapshotTesting to be imported in UI Tests