angular-cn/modules/@angular/common/test/directives/ng_class_spec.ts

598 lines
24 KiB
TypeScript

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