392 lines
17 KiB
TypeScript
392 lines
17 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 {NgClass, NgFor} from '@angular/common';
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import {Component} from '@angular/core';
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import {ComponentFixture, TestBed, async} from '@angular/core/testing';
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import {beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
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import {ListWrapper, StringMapWrapper} from '../../src/facade/collection';
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function detectChangesAndCheck(fixture: ComponentFixture<any>, classes: string) {
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fixture.detectChanges();
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expect(fixture.debugElement.children[0].nativeElement.className).toEqual(classes);
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}
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export function main() {
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describe('binding to CSS class list', () => {
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beforeEach(() => {
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TestBed.configureTestingModule({
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declarations: [TestComponent],
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});
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});
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it('should clean up when the directive is destroyed', async(() => {
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let template = '<div *ngFor="let item of items" [ngClass]="item"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.items = [['0']];
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fixture.detectChanges();
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fixture.debugElement.componentInstance.items = [['1']];
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detectChangesAndCheck(fixture, '1');
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}));
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describe('expressions evaluating to objects', () => {
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it('should add classes specified in an object literal', async(() => {
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let template = '<div [ngClass]="{foo: true, bar: false}"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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}));
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it('should add classes specified in an object literal without change in class names',
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async(() => {
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let template = `<div [ngClass]="{'foo-bar': true, 'fooBar': true}"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo-bar fooBar');
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}));
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it('should add and remove classes based on changes in object literal values', async(() => {
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let template = '<div [ngClass]="{foo: condition, bar: !condition}"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.condition = false;
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detectChangesAndCheck(fixture, 'bar');
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}));
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it('should add and remove classes based on changes to the expression object', async(() => {
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let template = '<div [ngClass]="objExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, 'foo bar');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'baz', true);
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detectChangesAndCheck(fixture, 'foo bar baz');
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StringMapWrapper.delete(fixture.debugElement.componentInstance.objExpr, 'bar');
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detectChangesAndCheck(fixture, 'foo baz');
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}));
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it('should add and remove classes based on reference changes to the expression object',
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async(() => {
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let template = '<div [ngClass]="objExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.objExpr = {foo: true, bar: true};
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detectChangesAndCheck(fixture, 'foo bar');
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fixture.debugElement.componentInstance.objExpr = {baz: true};
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detectChangesAndCheck(fixture, 'baz');
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}));
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it('should remove active classes when expression evaluates to null', async(() => {
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let template = '<div [ngClass]="objExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.objExpr = null;
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detectChangesAndCheck(fixture, '');
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fixture.debugElement.componentInstance.objExpr = {'foo': false, 'bar': true};
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detectChangesAndCheck(fixture, 'bar');
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}));
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it('should allow multiple classes per expression', async(() => {
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let template = '<div [ngClass]="objExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.objExpr = {'bar baz': true, 'bar1 baz1': true};
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detectChangesAndCheck(fixture, 'bar baz bar1 baz1');
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fixture.debugElement.componentInstance.objExpr = {'bar baz': false, 'bar1 baz1': true};
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detectChangesAndCheck(fixture, 'bar1 baz1');
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}));
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it('should split by one or more spaces between classes', async(() => {
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let template = '<div [ngClass]="objExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.objExpr = {'foo bar baz': true};
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detectChangesAndCheck(fixture, 'foo bar baz');
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}));
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});
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describe('expressions evaluating to lists', () => {
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it('should add classes specified in a list literal', async(() => {
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let template = `<div [ngClass]="['foo', 'bar', 'foo-bar', 'fooBar']"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo bar foo-bar fooBar');
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}));
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it('should add and remove classes based on changes to the expression', async(() => {
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let template = '<div [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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var arrExpr: string[] = fixture.debugElement.componentInstance.arrExpr;
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detectChangesAndCheck(fixture, 'foo');
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arrExpr.push('bar');
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detectChangesAndCheck(fixture, 'foo bar');
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arrExpr[1] = 'baz';
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detectChangesAndCheck(fixture, 'foo baz');
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ListWrapper.remove(fixture.debugElement.componentInstance.arrExpr, 'baz');
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detectChangesAndCheck(fixture, 'foo');
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}));
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it('should add and remove classes when a reference changes', async(() => {
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let template = '<div [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.arrExpr = ['bar'];
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detectChangesAndCheck(fixture, 'bar');
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}));
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it('should take initial classes into account when a reference changes', async(() => {
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let template = '<div class="foo" [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.arrExpr = ['bar'];
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detectChangesAndCheck(fixture, 'foo bar');
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}));
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it('should ignore empty or blank class names', async(() => {
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let template = '<div class="foo" [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.arrExpr = ['', ' '];
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detectChangesAndCheck(fixture, 'foo');
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}));
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it('should trim blanks from class names', async(() => {
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var template = '<div class="foo" [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.arrExpr = [' bar '];
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detectChangesAndCheck(fixture, 'foo bar');
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}));
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it('should allow multiple classes per item in arrays', async(() => {
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var template = '<div [ngClass]="arrExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.arrExpr = ['foo bar baz', 'foo1 bar1 baz1'];
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detectChangesAndCheck(fixture, 'foo bar baz foo1 bar1 baz1');
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fixture.debugElement.componentInstance.arrExpr = ['foo bar baz foobar'];
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detectChangesAndCheck(fixture, 'foo bar baz foobar');
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}));
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});
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describe('expressions evaluating to sets', () => {
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it('should add and remove classes if the set instance changed', async(() => {
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var template = '<div [ngClass]="setExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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var setExpr = new Set<string>();
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setExpr.add('bar');
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fixture.debugElement.componentInstance.setExpr = setExpr;
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detectChangesAndCheck(fixture, 'bar');
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setExpr = new Set<string>();
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setExpr.add('baz');
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fixture.debugElement.componentInstance.setExpr = setExpr;
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detectChangesAndCheck(fixture, 'baz');
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}));
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});
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describe('expressions evaluating to string', () => {
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it('should add classes specified in a string literal', async(() => {
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var template = `<div [ngClass]="'foo bar foo-bar fooBar'"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo bar foo-bar fooBar');
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}));
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it('should add and remove classes based on changes to the expression', async(() => {
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var template = '<div [ngClass]="strExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.strExpr = 'foo bar';
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detectChangesAndCheck(fixture, 'foo bar');
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fixture.debugElement.componentInstance.strExpr = 'baz';
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detectChangesAndCheck(fixture, 'baz');
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}));
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it('should remove active classes when switching from string to null', async(() => {
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var template = `<div [ngClass]="strExpr"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.strExpr = null;
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detectChangesAndCheck(fixture, '');
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}));
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it('should take initial classes into account when switching from string to null',
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async(() => {
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var template = `<div class="foo" [ngClass]="strExpr"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'foo');
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fixture.debugElement.componentInstance.strExpr = null;
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detectChangesAndCheck(fixture, 'foo');
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}));
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it('should ignore empty and blank strings', async(() => {
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var template = `<div class="foo" [ngClass]="strExpr"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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fixture.debugElement.componentInstance.strExpr = '';
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detectChangesAndCheck(fixture, 'foo');
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}));
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});
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describe('cooperation with other class-changing constructs', () => {
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it('should co-operate with the class attribute', async(() => {
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var template = '<div [ngClass]="objExpr" class="init foo"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, 'init foo bar');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'foo', false);
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detectChangesAndCheck(fixture, 'init bar');
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fixture.debugElement.componentInstance.objExpr = null;
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detectChangesAndCheck(fixture, 'init foo');
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}));
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it('should co-operate with the interpolated class attribute', async(() => {
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var template = `<div [ngClass]="objExpr" class="{{'init foo'}}"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, `init foo bar`);
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'foo', false);
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detectChangesAndCheck(fixture, `init bar`);
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fixture.debugElement.componentInstance.objExpr = null;
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detectChangesAndCheck(fixture, `init foo`);
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}));
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it('should co-operate with the class attribute and binding to it', async(() => {
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var template = `<div [ngClass]="objExpr" class="init" [class]="'foo'"></div>`;
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, `init foo bar`);
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'foo', false);
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detectChangesAndCheck(fixture, `init bar`);
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fixture.debugElement.componentInstance.objExpr = null;
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detectChangesAndCheck(fixture, `init foo`);
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}));
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it('should co-operate with the class attribute and class.name binding', async(() => {
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var template =
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'<div class="init foo" [ngClass]="objExpr" [class.baz]="condition"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'init foo baz');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, 'init foo baz bar');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'foo', false);
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detectChangesAndCheck(fixture, 'init baz bar');
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fixture.debugElement.componentInstance.condition = false;
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detectChangesAndCheck(fixture, 'init bar');
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}));
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it('should co-operate with initial class and class attribute binding when binding changes',
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async(() => {
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var template = '<div class="init" [ngClass]="objExpr" [class]="strExpr"></div>';
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TestBed.overrideComponent(TestComponent, {set: {template: template}});
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let fixture = TestBed.createComponent(TestComponent);
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detectChangesAndCheck(fixture, 'init foo');
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StringMapWrapper.set(fixture.debugElement.componentInstance.objExpr, 'bar', true);
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detectChangesAndCheck(fixture, 'init foo bar');
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fixture.debugElement.componentInstance.strExpr = 'baz';
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detectChangesAndCheck(fixture, 'init bar baz foo');
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fixture.debugElement.componentInstance.objExpr = null;
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detectChangesAndCheck(fixture, 'init baz');
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}));
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});
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});
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}
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@Component({selector: 'test-cmp', template: ''})
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class TestComponent {
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condition: boolean = true;
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items: any[];
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arrExpr: string[] = ['foo'];
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setExpr: Set<string> = new Set<string>();
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objExpr = {'foo': true, 'bar': false};
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strExpr = 'foo';
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constructor() { this.setExpr.add('foo'); }
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}
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