Don't assert specific devices for accessibility tests and use iOS 18 again. (#4741)

* Don't assert specific devices for accessibility tests.

It's not as critical as UI/Preview tests as nothing is snapshotted.

* Extend the timeout for accessibility tests.

They're slow 😅

* Drop back to iOS 18.5 for accessibility tests (for now).

.github/workflows/accessibility_tests.yml

@@ -10,7 +10,7 @@ jobs:
   tests:
     name: Tests
     runs-on: macos-15
-    timeout-minutes: 120
+    timeout-minutes: 150
 
     concurrency:
       # Only allow a single run of this workflow on each branch, automatically cancelling older runs.

AccessibilityTests/Sources/Application.swift

@@ -24,19 +24,9 @@ enum Application {
     }
     
     private static func checkEnvironments() {
-        let requirediPhoneSimulator = "iPhone17,3" // iPhone 16
-        let requiredOSVersion = 18
-        
-        let osVersion = ProcessInfo().operatingSystemVersion
-        guard osVersion.majorVersion == requiredOSVersion else {
-            fatalError("Switch to iOS \(requiredOSVersion) for these tests.")
-        }
-        
-        guard let deviceModel = ProcessInfo().environment["SIMULATOR_MODEL_IDENTIFIER"] else {
-            fatalError("Unknown simulator.")
-        }
-        guard deviceModel == requirediPhoneSimulator else {
-            fatalError("Running on \(deviceModel) but we only support \(requirediPhoneSimulator)")
+        guard UIDevice.current.userInterfaceIdiom == .phone else {
+            XCTFail("Accessibility tests should be run on a phone.")
+            fatalError("Accessibility tests should be run on a phone.")
         }
     }
 }

ElementX/Sources/AccessibilityTests/AccessibilityTestsAppCoordinator.swift

@@ -108,6 +108,7 @@ struct PreviewsWrapperView: View {
             EmptyView()
         } else {
             wrapper.currentPreview.content
+                // This ID raises UIKit assertions on iOS 26 but is needed otherwise toolbars go missing and some timeline items won't resize.
                 .id("\(wrapper.previewName)-\(dynamicTypeSize)")
         }
     }

fastlane/Fastfile

@@ -95,7 +95,7 @@ lane :accessibility_tests do |options|
   
   run_tests(
     scheme: "AccessibilityTests",
-    device: "iPhone 17 (#{simulator_version})",
+    device: "iPhone 16 (18.5)", # The tests are randomly crashing on iOS 26
     ensure_devices_found: true,
     prelaunch_simulator: false,
     result_bundle: true,