258 lines
10 KiB
TypeScript
258 lines
10 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {AnimationOptions, animate, state, style, transition} from '@angular/animations';
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import {AnimationTransitionInstruction} from '@angular/animations/browser/src/dsl/animation_transition_instruction';
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import {AnimationTrigger} from '@angular/animations/browser/src/dsl/animation_trigger';
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import {ENTER_CLASSNAME, LEAVE_CLASSNAME} from '../../src/util';
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import {MockAnimationDriver} from '../../testing';
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import {makeTrigger} from '../shared';
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{
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describe('AnimationTrigger', () => {
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// these tests are only mean't to be run within the DOM (for now)
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if (typeof Element == 'undefined') return;
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let element: any;
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beforeEach(() => {
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element = document.createElement('div');
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document.body.appendChild(element);
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});
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afterEach(() => { document.body.removeChild(element); });
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describe('trigger validation', () => {
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it('should group errors together for an animation trigger', () => {
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expect(() => {
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makeTrigger('myTrigger', [transition('12345', animate(3333))]);
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}).toThrowError(/Animation parsing for the myTrigger trigger have failed/);
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});
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it('should throw an error when a transition within a trigger contains an invalid expression',
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() => {
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expect(
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() => { makeTrigger('name', [transition('somethingThatIsWrong', animate(3333))]); })
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.toThrowError(
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/- The provided transition expression "somethingThatIsWrong" is not supported/);
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});
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it('should throw an error if an animation alias is used that is not yet supported', () => {
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expect(() => {
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makeTrigger('name', [transition(':angular', animate(3333))]);
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}).toThrowError(/- The transition alias value ":angular" is not supported/);
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});
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});
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describe('trigger usage', () => {
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it('should construct a trigger based on the states and transition data', () => {
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const result = makeTrigger('name', [
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state('on', style({width: 0})),
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state('off', style({width: 100})),
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transition('on => off', animate(1000)),
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transition('off => on', animate(1000)),
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]);
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expect(result.states['on'].buildStyles({}, [])).toEqual({width: 0});
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expect(result.states['off'].buildStyles({}, [])).toEqual({width: 100});
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expect(result.transitionFactories.length).toEqual(2);
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});
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it('should allow multiple state values to use the same styles', () => {
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const result = makeTrigger('name', [
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state('on, off', style({width: 50})), transition('on => off', animate(1000)),
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transition('off => on', animate(1000))
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]);
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expect(result.states['on'].buildStyles({}, [])).toEqual({width: 50});
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expect(result.states['off'].buildStyles({}, [])).toEqual({width: 50});
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});
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it('should find the first transition that matches', () => {
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const result = makeTrigger(
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'name', [transition('a => b', animate(1234)), transition('b => c', animate(5678))]);
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const trans = buildTransition(result, element, 'b', 'c') !;
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expect(trans.timelines.length).toEqual(1);
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const timeline = trans.timelines[0];
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expect(timeline.duration).toEqual(5678);
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});
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it('should find a transition with a `*` value', () => {
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const result = makeTrigger('name', [
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transition('* => b', animate(1234)), transition('b => *', animate(5678)),
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transition('* => *', animate(9999))
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]);
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let trans = buildTransition(result, element, 'b', 'c') !;
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expect(trans.timelines[0].duration).toEqual(5678);
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trans = buildTransition(result, element, 'a', 'b') !;
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expect(trans.timelines[0].duration).toEqual(1234);
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trans = buildTransition(result, element, 'c', 'c') !;
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expect(trans.timelines[0].duration).toEqual(9999);
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});
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it('should null when no results are found', () => {
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const result = makeTrigger('name', [transition('a => b', animate(1111))]);
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const trigger = result.matchTransition('b', 'a', {}, {});
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expect(trigger).toBeFalsy();
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});
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it('should support bi-directional transition expressions', () => {
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const result = makeTrigger('name', [transition('a <=> b', animate(2222))]);
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const t1 = buildTransition(result, element, 'a', 'b') !;
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expect(t1.timelines[0].duration).toEqual(2222);
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const t2 = buildTransition(result, element, 'b', 'a') !;
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expect(t2.timelines[0].duration).toEqual(2222);
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});
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it('should support multiple transition statements in one string', () => {
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const result = makeTrigger('name', [transition('a => b, b => a, c => *', animate(1234))]);
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const t1 = buildTransition(result, element, 'a', 'b') !;
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expect(t1.timelines[0].duration).toEqual(1234);
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const t2 = buildTransition(result, element, 'b', 'a') !;
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expect(t2.timelines[0].duration).toEqual(1234);
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const t3 = buildTransition(result, element, 'c', 'a') !;
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expect(t3.timelines[0].duration).toEqual(1234);
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});
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describe('params', () => {
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it('should support transition-level animation variable params', () => {
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const result = makeTrigger(
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'name',
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[transition(
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'a => b', [style({height: '{{ a }}'}), animate(1000, style({height: '{{ b }}'}))],
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buildParams({a: '100px', b: '200px'}))]);
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const trans = buildTransition(result, element, 'a', 'b') !;
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const keyframes = trans.timelines[0].keyframes;
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expect(keyframes).toEqual([{height: '100px', offset: 0}, {height: '200px', offset: 1}]);
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});
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it('should substitute variable params provided directly within the transition match',
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() => {
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const result = makeTrigger(
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'name',
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[transition(
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'a => b',
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[style({height: '{{ a }}'}), animate(1000, style({height: '{{ b }}'}))],
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buildParams({a: '100px', b: '200px'}))]);
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const trans =
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buildTransition(result, element, 'a', 'b', {}, buildParams({a: '300px'})) !;
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const keyframes = trans.timelines[0].keyframes;
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expect(keyframes).toEqual(
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[{height: '300px', offset: 0}, {height: '200px', offset: 1}]);
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});
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});
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it('should match `true` and `false` given boolean values', () => {
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const result = makeTrigger('name', [
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state('false', style({color: 'red'})), state('true', style({color: 'green'})),
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transition('true <=> false', animate(1234))
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]);
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const trans = buildTransition(result, element, false, true) !;
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expect(trans.timelines[0].duration).toEqual(1234);
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});
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it('should match `1` and `0` given boolean values', () => {
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const result = makeTrigger('name', [
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state('0', style({color: 'red'})), state('1', style({color: 'green'})),
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transition('1 <=> 0', animate(4567))
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]);
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const trans = buildTransition(result, element, false, true) !;
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expect(trans.timelines[0].duration).toEqual(4567);
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});
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it('should match `true` and `false` state styles on a `1 <=> 0` boolean transition given boolean values',
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() => {
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const result = makeTrigger('name', [
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state('false', style({color: 'red'})), state('true', style({color: 'green'})),
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transition('1 <=> 0', animate(4567))
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]);
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const trans = buildTransition(result, element, false, true) !;
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expect(trans.timelines[0].keyframes).toEqual([
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{offset: 0, color: 'red'}, {offset: 1, color: 'green'}
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]);
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});
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it('should match `1` and `0` state styles on a `true <=> false` boolean transition given boolean values',
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() => {
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const result = makeTrigger('name', [
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state('0', style({color: 'orange'})), state('1', style({color: 'blue'})),
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transition('true <=> false', animate(4567))
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]);
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const trans = buildTransition(result, element, false, true) !;
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expect(trans.timelines[0].keyframes).toEqual([
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{offset: 0, color: 'orange'}, {offset: 1, color: 'blue'}
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]);
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});
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it('should treat numeric values (disguised as strings) as proper state values', () => {
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const result = makeTrigger('name', [
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state(1 as any as string, style({opacity: 0})),
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state(0 as any as string, style({opacity: 0})), transition('* => *', animate(1000))
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]);
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expect(() => {
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const trans = buildTransition(result, element, false, true) !;
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}).not.toThrow();
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});
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describe('aliases', () => {
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it('should alias the :enter transition as void => *', () => {
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const result = makeTrigger('name', [transition(':enter', animate(3333))]);
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const trans = buildTransition(result, element, 'void', 'something') !;
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expect(trans.timelines[0].duration).toEqual(3333);
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});
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it('should alias the :leave transition as * => void', () => {
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const result = makeTrigger('name', [transition(':leave', animate(3333))]);
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const trans = buildTransition(result, element, 'something', 'void') !;
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expect(trans.timelines[0].duration).toEqual(3333);
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});
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});
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});
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});
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}
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function buildTransition(
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trigger: AnimationTrigger, element: any, fromState: any, toState: any,
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fromOptions?: AnimationOptions, toOptions?: AnimationOptions): AnimationTransitionInstruction|
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null {
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const params = toOptions && toOptions.params || {};
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const trans = trigger.matchTransition(fromState, toState, element, params) !;
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if (trans) {
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const driver = new MockAnimationDriver();
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return trans.build(
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driver, element, fromState, toState, ENTER_CLASSNAME, LEAVE_CLASSNAME, fromOptions,
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toOptions) !;
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}
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return null;
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}
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function buildParams(params: {[name: string]: any}): AnimationOptions {
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return <AnimationOptions>{params};
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}
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