Add sunset banners guiding users to install Element X when registering against a server with MAS. (#7890)

RiotSwiftUI/Modules/Authentication/ServerSelection/Test/UI/AuthenticationServerSelectionUITests.swift

@@ -30,6 +30,9 @@ class AuthenticationServerSelectionUITests: MockScreenTestCase {
         
         let dismissButton = app.buttons["dismissButton"]
         XCTAssertTrue(dismissButton.exists, "The dismiss button should be shown during modal presentation.")
+        
+        let downloadBanner = app.buttons["sunsetBanners"]
+        XCTAssertFalse(downloadBanner.exists, "The sunset banners should not be shown when registering against a legacy homeserver.")
     }
     
     func testLoginState() {
@@ -76,4 +79,15 @@ class AuthenticationServerSelectionUITests: MockScreenTestCase {
         let confirmButton = app.buttons["confirmButton"]
         XCTAssertEqual(confirmButton.label, VectorL10n.next, "The confirm button should say Next when not in modal presentation.")
     }
+    
+    func testSunsetBanners() {
+        app.goToScreenWithIdentifier(MockAuthenticationServerSelectionScreenState.mas.title)
+        
+        let downloadBanner = app.buttons["sunsetBanners"]
+        XCTAssertTrue(downloadBanner.exists, "The sunset banners should be shown when registering against a homeserver with MAS.")
+        
+        let confirmButton = app.buttons["confirmButton"]
+        XCTAssertTrue(confirmButton.exists, "The confirm button should always be shown.")
+        XCTAssertFalse(confirmButton.isEnabled, "The confirm button should be disabled when there is an error.")
+    }
 }

RiotSwiftUI/Modules/Authentication/ServerSelection/Test/Unit/AuthenticationServerSelectionViewModelTests.swift

@@ -24,7 +24,7 @@ class AuthenticationServerSelectionViewModelTests: XCTestCase {
 
     @MainActor func testErrorMessage() async throws {
         // Given a new instance of the view model.
-        XCTAssertNil(context.viewState.footerErrorMessage, "There should not be an error message for a new view model.")
+        XCTAssertNil(context.viewState.footerError, "There should not be an error message for a new view model.")
         XCTAssertFalse(context.viewState.isShowingFooterError, "There should not be an error shown.")
         
         // When an error occurs.
@@ -32,7 +32,7 @@ class AuthenticationServerSelectionViewModelTests: XCTestCase {
         viewModel.displayError(.footerMessage(message))
         
         // Then the footer should now be showing an error.
-        XCTAssertEqual(context.viewState.footerErrorMessage, message, "The error message should be stored.")
+        XCTAssertEqual(context.viewState.footerError, .message(message), "The error message should be stored.")
         XCTAssertTrue(context.viewState.isShowingFooterError, "There should be an error shown.")
         
         // And when clearing the error.
@@ -42,7 +42,31 @@ class AuthenticationServerSelectionViewModelTests: XCTestCase {
         await Task.yield()
         
         // Then the error message should now be removed.
-        XCTAssertNil(context.viewState.footerErrorMessage, "The error message should have been cleared.")
+        XCTAssertNil(context.viewState.footerError, "The error message should have been cleared.")
+        XCTAssertFalse(context.viewState.isShowingFooterError, "There should not be an error shown anymore.")
+    }
+    
+    @MainActor func testSunsetBanner() async throws {
+        // Given a new instance of the view model.
+        XCTAssertNil(context.viewState.footerError, "There should not be an error for a new view model.")
+        XCTAssertFalse(context.viewState.isShowingFooterError, "There should not be an error shown.")
+        
+        // When an error occurs.
+        let message = "Unable to contact server."
+        viewModel.displayError(.requiresReplacementApp)
+        
+        // Then the footer should now be showing an error.
+        XCTAssertEqual(context.viewState.footerError, .sunsetBanner, "The banner should be shown.")
+        XCTAssertTrue(context.viewState.isShowingFooterError, "There should be an error shown.")
+        
+        // And when clearing the error.
+        context.send(viewAction: .clearFooterError)
+        
+        // Wait for the action to spawn a Task on the main actor as the Context protocol doesn't support actors.
+        await Task.yield()
+        
+        // Then the error message should now be removed.
+        XCTAssertNil(context.viewState.footerError, "The error should have been cleared.")
         XCTAssertFalse(context.viewState.isShowingFooterError, "There should not be an error shown anymore.")
     }
 }