| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/foundation.dart'; |
| |
| import 'hardware_keyboard.dart'; |
| |
| /// Override the transit mode with which key events are simulated. |
| /// |
| /// Setting [debugKeyEventSimulatorTransitModeOverride] is a good way to make |
| /// certain tests simulate the behavior of different type of platforms in terms |
| /// of their extent of support for keyboard API. |
| KeyDataTransitMode? debugKeyEventSimulatorTransitModeOverride; |
| |
| /// Returns true if none of the widget library debug variables have been changed. |
| /// |
| /// This function is used by the test framework to ensure that debug variables |
| /// haven't been inadvertently changed. |
| /// |
| /// See [the services library](services/services-library.html) for a complete list. |
| bool debugAssertAllServicesVarsUnset(String reason) { |
| assert(() { |
| if (debugKeyEventSimulatorTransitModeOverride != null) { |
| throw FlutterError(reason); |
| } |
| return true; |
| }()); |
| return true; |
| } |