blob: 13c8bfb31e38d50124a668590c3b55618876711c [file] [log] [blame]
// 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.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)));
_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));
}