// Copyright 2018 The Chromium 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'; /// Whether to replace all shadows with solid color blocks. /// /// This is useful when writing golden file tests (see [matchesGoldenFile]) since /// the rendering of shadows is not guaranteed to be pixel-for-pixel identical from /// version to version (or even from run to run). bool debugDisableShadows = false; /// Returns true if none of the painting 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 <https://docs.flutter.io/flutter/rendering/painting-library.html> for /// a complete list. /// /// The `debugDisableShadowsOverride` argument can be provided to override /// the expected value for [debugDisableShadows]. (This exists because the /// test framework itself overrides this value in some cases.) bool debugAssertAllPaintingVarsUnset(String reason, { bool debugDisableShadowsOverride = false }) { assert(() { if (debugDisableShadows != debugDisableShadowsOverride) { throw FlutterError(reason); } return true; }()); return true; }