// 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/widgets.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { test('IconThemeData control test', () { const IconThemeData data = IconThemeData( size: 16.0, fill: 0.5, weight: 600, grade: 25, opticalSize: 45, color: Color(0xAAAAAAAA), opacity: 0.5, shadows: <Shadow>[Shadow(color: Color(0xAAAAAAAA), blurRadius: 1.0, offset: Offset(1.0, 1.0))], ); expect(data, hasOneLineDescription); expect(data, equals(data.copyWith())); expect(data.hashCode, equals(data.copyWith().hashCode)); final IconThemeData lerped = IconThemeData.lerp(data, const IconThemeData.fallback(), 0.25); expect(lerped.size, 18.0); expect(lerped.fill, 0.375); expect(lerped.weight, 550.0); expect(lerped.grade, 18.75); expect(lerped.opticalSize, 45.75); expect(lerped.color, const Color(0xBF7F7F7F)); expect(lerped.opacity, 0.625); expect(lerped.shadows, const <Shadow>[Shadow(color: Color(0xAAAAAAAA), blurRadius: 0.75, offset: Offset(0.75, 0.75))]); }); group('IconThemeData lerp', () { const IconThemeData data = IconThemeData( size: 16.0, fill: 0.5, weight: 600, grade: 25, opticalSize: 45, color: Color(0xFFFFFFFF), opacity: 1.0, shadows: <Shadow>[Shadow(color: Color(0xFFFFFFFF), blurRadius: 1.0, offset: Offset(1.0, 1.0))], ); test('with first null', () { final IconThemeData lerped = IconThemeData.lerp(null, data, 0.25); expect(lerped.size, 4.0); expect(lerped.fill, 0.125); expect(lerped.weight, 150.0); expect(lerped.grade, 6.25); expect(lerped.opticalSize, 11.25); expect(lerped.color, const Color(0x40FFFFFF)); expect(lerped.opacity, 0.25); expect(lerped.shadows, const <Shadow>[Shadow(color: Color(0xFFFFFFFF), blurRadius: 0.25, offset: Offset(0.25, 0.25))]); }); test('IconThemeData lerp special cases', () { expect(IconThemeData.lerp(null, null, 0), const IconThemeData()); const IconThemeData data = IconThemeData(); expect(identical(IconThemeData.lerp(data, data, 0.5), data), true); }); test('with second null', () { final IconThemeData lerped = IconThemeData.lerp(data, null, 0.25); expect(lerped.size, 12.0); expect(lerped.fill, 0.375); expect(lerped.weight, 450.0); expect(lerped.grade, 18.75); expect(lerped.opticalSize, 33.75); expect(lerped.color, const Color(0xBFFFFFFF)); expect(lerped.opacity, 0.75); expect(lerped.shadows, const <Shadow>[Shadow(color: Color(0xFFFFFFFF), blurRadius: 0.75, offset: Offset(0.75, 0.75))]); }); test('with both null', () { final IconThemeData lerped = IconThemeData.lerp(null, null, 0.25); expect(lerped.size, null); expect(lerped.fill, null); expect(lerped.weight, null); expect(lerped.grade, null); expect(lerped.opticalSize, null); expect(lerped.color, null); expect(lerped.opacity, null); expect(lerped.shadows, null); }); }); test('Throws if given invalid values', () { expect(() => IconThemeData(fill: -0.1), throwsAssertionError); expect(() => IconThemeData(fill: 1.1), throwsAssertionError); expect(() => IconThemeData(weight: -0.1), throwsAssertionError); expect(() => IconThemeData(weight: 0.0), throwsAssertionError); expect(() => IconThemeData(opticalSize: -0.1), throwsAssertionError); expect(() => IconThemeData(opticalSize: 0), throwsAssertionError); }); }