Revamp the UI test snapshot naming convention to make them easier to organize and find.

UITests/Sources/ServerSelectionTests.swift

@@ -0,0 +1,43 @@
+//
+// Copyright 2022-2024 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+// Please see LICENSE files in the repository root for full details.
+//
+
+import XCTest
+
+@MainActor
+class ServerSelectionUITests: XCTestCase {
+    func testNormalState() async throws {
+        // Given the initial server selection screen as a modal.
+        let app = Application.launch(.serverSelection)
+        
+        // Then it should be configured for matrix.org
+        try await app.assertScreenshot()
+    }
+
+    func testEmptyAddress() async throws {
+        // Given the initial server selection screen as a modal.
+        let app = Application.launch(.serverSelection)
+        
+        // When clearing the server address text field.
+        app.textFields[A11yIdentifiers.changeServerScreen.server].tap()
+        app.textFields[A11yIdentifiers.changeServerScreen.server].buttons.element.tap()
+        
+        // Then the screen should not allow the user to continue.
+        try await app.assertScreenshot()
+    }
+
+    func testInvalidAddress() async throws {
+        // Given the initial server selection screen as a modal.
+        let app = Application.launch(.serverSelection)
+        
+        // When typing in an invalid homeserver
+        app.textFields[A11yIdentifiers.changeServerScreen.server].clearAndTypeText("thisisbad\n", app: app) // The tests only accept an address from LoginHomeserver.mockXYZ
+        
+        // Then an error should be shown and the confirmation button disabled.
+        try await app.assertScreenshot()
+        XCTAssertFalse(app.buttons[A11yIdentifiers.changeServerScreen.continue].isEnabled, "The continue button should be disabled when there is an error.")
+    }
+}