// 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/painting.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { test('applyBoxFit', () { FittedSizes result; result = applyBoxFit(BoxFit.scaleDown, const Size(100.0, 1000.0), const Size(200.0, 2000.0)); expect(result.source, equals(const Size(100.0, 1000.0))); expect(result.destination, equals(const Size(100.0, 1000.0))); result = applyBoxFit(BoxFit.scaleDown, const Size(300.0, 3000.0), const Size(200.0, 2000.0)); expect(result.source, equals(const Size(300.0, 3000.0))); expect(result.destination, equals(const Size(200.0, 2000.0))); result = applyBoxFit(BoxFit.fitWidth, const Size(2000.0, 400.0), const Size(1000.0, 100.0)); expect(result.source, equals(const Size(2000.0, 200.0))); expect(result.destination, equals(const Size(1000.0, 100.0))); result = applyBoxFit(BoxFit.fitWidth, const Size(2000.0, 400.0), const Size(1000.0, 300.0)); expect(result.source, equals(const Size(2000.0, 400.0))); expect(result.destination, equals(const Size(1000.0, 200.0))); result = applyBoxFit(BoxFit.fitHeight, const Size(400.0, 2000.0), const Size(100.0, 1000.0)); expect(result.source, equals(const Size(200.0, 2000.0))); expect(result.destination, equals(const Size(100.0, 1000.0))); result = applyBoxFit(BoxFit.fitHeight, const Size(400.0, 2000.0), const Size(300.0, 1000.0)); expect(result.source, equals(const Size(400.0, 2000.0))); expect(result.destination, equals(const Size(200.0, 1000.0))); _testZeroAndNegativeSizes(BoxFit.fill); _testZeroAndNegativeSizes(BoxFit.contain); _testZeroAndNegativeSizes(BoxFit.cover); _testZeroAndNegativeSizes(BoxFit.fitWidth); _testZeroAndNegativeSizes(BoxFit.fitHeight); _testZeroAndNegativeSizes(BoxFit.none); _testZeroAndNegativeSizes(BoxFit.scaleDown); }); } void _testZeroAndNegativeSizes(BoxFit fit) { FittedSizes result; result = applyBoxFit(fit, const Size(-400.0, 2000.0), const Size(100.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, -2000.0), const Size(100.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, 2000.0), const Size(-100.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, 2000.0), const Size(100.0, -1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(0.0, 2000.0), const Size(100.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, 0.0), const Size(100.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, 2000.0), const Size(0.0, 1000.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); result = applyBoxFit(fit, const Size(400.0, 2000.0), const Size(100.0, 0.0)); expect(result.source, equals(Size.zero)); expect(result.destination, equals(Size.zero)); }