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// 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/rendering.dart';
import 'package:flutter_test/flutter_test.dart';
import 'rendering_tester.dart';
void main() {
TestRenderingFlutterBinding.ensureInitialized();
test('RenderAspectRatio: Intrinsic sizing 2.0', () {
final RenderAspectRatio box = RenderAspectRatio(aspectRatio: 2.0);
expect(box.getMinIntrinsicWidth(200.0), 400.0);
expect(box.getMinIntrinsicWidth(400.0), 800.0);
expect(box.getMaxIntrinsicWidth(200.0), 400.0);
expect(box.getMaxIntrinsicWidth(400.0), 800.0);
expect(box.getMinIntrinsicHeight(200.0), 100.0);
expect(box.getMinIntrinsicHeight(400.0), 200.0);
expect(box.getMaxIntrinsicHeight(200.0), 100.0);
expect(box.getMaxIntrinsicHeight(400.0), 200.0);
expect(box.getMinIntrinsicWidth(double.infinity), 0.0);
expect(box.getMaxIntrinsicWidth(double.infinity), 0.0);
expect(box.getMinIntrinsicHeight(double.infinity), 0.0);
expect(box.getMaxIntrinsicHeight(double.infinity), 0.0);
});
test('RenderAspectRatio: Intrinsic sizing 0.5', () {
final RenderAspectRatio box = RenderAspectRatio(aspectRatio: 0.5);
expect(box.getMinIntrinsicWidth(200.0), 100.0);
expect(box.getMinIntrinsicWidth(400.0), 200.0);
expect(box.getMaxIntrinsicWidth(200.0), 100.0);
expect(box.getMaxIntrinsicWidth(400.0), 200.0);
expect(box.getMinIntrinsicHeight(200.0), 400.0);
expect(box.getMinIntrinsicHeight(400.0), 800.0);
expect(box.getMaxIntrinsicHeight(200.0), 400.0);
expect(box.getMaxIntrinsicHeight(400.0), 800.0);
expect(box.getMinIntrinsicWidth(double.infinity), 0.0);
expect(box.getMaxIntrinsicWidth(double.infinity), 0.0);
expect(box.getMinIntrinsicHeight(double.infinity), 0.0);
expect(box.getMaxIntrinsicHeight(double.infinity), 0.0);
});
test('RenderAspectRatio: Intrinsic sizing 2.0', () {
final RenderAspectRatio box = RenderAspectRatio(
aspectRatio: 2.0,
child: RenderSizedBox(const Size(90.0, 70.0)),
);
expect(box.getMinIntrinsicWidth(200.0), 400.0);
expect(box.getMinIntrinsicWidth(400.0), 800.0);
expect(box.getMaxIntrinsicWidth(200.0), 400.0);
expect(box.getMaxIntrinsicWidth(400.0), 800.0);
expect(box.getMinIntrinsicHeight(200.0), 100.0);
expect(box.getMinIntrinsicHeight(400.0), 200.0);
expect(box.getMaxIntrinsicHeight(200.0), 100.0);
expect(box.getMaxIntrinsicHeight(400.0), 200.0);
expect(box.getMinIntrinsicWidth(double.infinity), 90.0);
expect(box.getMaxIntrinsicWidth(double.infinity), 90.0);
expect(box.getMinIntrinsicHeight(double.infinity), 70.0);
expect(box.getMaxIntrinsicHeight(double.infinity), 70.0);
});
test('RenderAspectRatio: Intrinsic sizing 0.5', () {
final RenderAspectRatio box = RenderAspectRatio(
aspectRatio: 0.5,
child: RenderSizedBox(const Size(90.0, 70.0)),
);
expect(box.getMinIntrinsicWidth(200.0), 100.0);
expect(box.getMinIntrinsicWidth(400.0), 200.0);
expect(box.getMaxIntrinsicWidth(200.0), 100.0);
expect(box.getMaxIntrinsicWidth(400.0), 200.0);
expect(box.getMinIntrinsicHeight(200.0), 400.0);
expect(box.getMinIntrinsicHeight(400.0), 800.0);
expect(box.getMaxIntrinsicHeight(200.0), 400.0);
expect(box.getMaxIntrinsicHeight(400.0), 800.0);
expect(box.getMinIntrinsicWidth(double.infinity), 90.0);
expect(box.getMaxIntrinsicWidth(double.infinity), 90.0);
expect(box.getMinIntrinsicHeight(double.infinity), 70.0);
expect(box.getMaxIntrinsicHeight(double.infinity), 70.0);
});
test('RenderAspectRatio: Unbounded', () {
final RenderBox box = RenderConstrainedOverflowBox(
maxWidth: double.infinity,
maxHeight: double.infinity,
child: RenderAspectRatio(
aspectRatio: 0.5,
child: RenderSizedBox(const Size(90.0, 70.0)),
),
);
final List<FlutterErrorDetails> errors = <FlutterErrorDetails>[];
layout(box, onErrors: () {
errors.addAll(TestRenderingFlutterBinding.instance.takeAllFlutterErrorDetails());
});
expect(errors, hasLength(2));
expect(errors.first.exception, isFlutterError);
expect(
(errors.first.exception as FlutterError).toStringDeep(),
'FlutterError\n'
' RenderAspectRatio has unbounded constraints.\n'
' This RenderAspectRatio was given an aspect ratio of 0.5 but was\n'
' given both unbounded width and unbounded height constraints.\n'
' Because both constraints were unbounded, this render object\n'
" doesn't know how much size to consume.\n",
);
// The second error message is a generic message generated by the Dart VM. Not worth testing.
});
test('RenderAspectRatio: Sizing', () {
RenderConstrainedOverflowBox outside;
RenderAspectRatio inside;
layout(outside = RenderConstrainedOverflowBox(
child: inside = RenderAspectRatio(aspectRatio: 1.0),
));
pumpFrame();
expect(inside.size, const Size(800.0, 600.0));
outside.minWidth = 0.0;
outside.minHeight = 0.0;
outside.maxWidth = 100.0;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(90.0, 90.0));
outside.maxWidth = 90.0;
outside.maxHeight = 100.0;
pumpFrame();
expect(inside.size, const Size(90.0, 90.0));
outside.maxWidth = double.infinity;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(90.0, 90.0));
outside.maxWidth = 90.0;
outside.maxHeight = double.infinity;
pumpFrame();
expect(inside.size, const Size(90.0, 90.0));
inside.aspectRatio = 2.0;
outside.maxWidth = 100.0;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(100.0, 50.0));
outside.maxWidth = 90.0;
outside.maxHeight = 100.0;
pumpFrame();
expect(inside.size, const Size(90.0, 45.0));
outside.maxWidth = double.infinity;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(180.0, 90.0));
outside.maxWidth = 90.0;
outside.maxHeight = double.infinity;
pumpFrame();
expect(inside.size, const Size(90.0, 45.0));
outside.minWidth = 80.0;
outside.minHeight = 80.0;
outside.maxWidth = 100.0;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(100.0, 80.0));
outside.maxWidth = 90.0;
outside.maxHeight = 100.0;
pumpFrame();
expect(inside.size, const Size(90.0, 80.0));
outside.maxWidth = double.infinity;
outside.maxHeight = 90.0;
pumpFrame();
expect(inside.size, const Size(180.0, 90.0));
outside.maxWidth = 90.0;
outside.maxHeight = double.infinity;
pumpFrame();
expect(inside.size, const Size(90.0, 80.0));
});
}