angular-cn/packages/core/test/acceptance/attributes_spec.ts

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/**
* @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 {Component} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {By, DomSanitizer, SafeUrl} from '@angular/platform-browser';
describe('attribute creation', () => {
it('should create an element', () => {
@Component({
template: `<div id="test" title="Hello"></div>`,
})
class Comp {
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const div = fixture.debugElement.query(By.css('div')).nativeElement;
expect(div.id).toEqual('test');
expect(div.title).toEqual('Hello');
});
it('should allow for setting xlink namespaced attributes', () => {
@Component({
template: `<div id="test" xlink:href="bar" title="Hello"></div>`,
})
class Comp {
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const div = fixture.debugElement.query(By.css('div')).nativeElement;
const attrs = div.attributes;
expect(attrs['id'].name).toEqual('id');
expect(attrs['id'].namespaceURI).toEqual(null);
expect(attrs['id'].value).toEqual('test');
expect(attrs['xlink:href'].name).toEqual('xlink:href');
expect(attrs['xlink:href'].namespaceURI).toEqual('http://www.w3.org/1999/xlink');
expect(attrs['xlink:href'].value).toEqual('bar');
expect(attrs['title'].name).toEqual('title');
expect(attrs['title'].namespaceURI).toEqual(null);
expect(attrs['title'].value).toEqual('Hello');
});
});
describe('attribute binding', () => {
it('should set attribute values', () => {
@Component({
template: `<a [attr.href]="url"></a>`,
})
class Comp {
url = 'https://angular.io/robots.txt';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const a = fixture.debugElement.query(By.css('a')).nativeElement;
// NOTE: different browsers will add `//` into the URI.
expect(a.href).toEqual('https://angular.io/robots.txt');
});
it('should be able to bind multiple attribute values per element', () => {
@Component({
template: `<a [attr.id]="id" [attr.href]="url" [attr.tabindex]="'-1'"></a>`,
})
class Comp {
url = 'https://angular.io/robots.txt';
id = 'my-link';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const a = fixture.debugElement.query(By.css('a')).nativeElement;
// NOTE: different browsers will add `//` into the URI.
expect(a.getAttribute('href')).toBe('https://angular.io/robots.txt');
expect(a.getAttribute('id')).toBe('my-link');
expect(a.getAttribute('tabindex')).toBe('-1');
});
it('should be able to bind multiple attributes in the presence of other bindings', () => {
@Component({
template: `<a [id]="id" [attr.href]="url" [title]="'hello'"></a>`,
})
class Comp {
url = 'https://angular.io/robots.txt';
id = 'my-link';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const a = fixture.debugElement.query(By.css('a')).nativeElement;
// NOTE: different browsers will add `//` into the URI.
expect(a.getAttribute('href')).toBe('https://angular.io/robots.txt');
expect(a.id).toBe('my-link');
expect(a.getAttribute('title')).toBe('hello');
});
it('should be able to bind attributes with interpolations', () => {
@Component({
template: `
<button
attr.id="my-{{id}}-button"
[attr.title]="title"
attr.tabindex="{{1 + 3 + 7}}"></button>`,
})
class Comp {
title = 'hello';
id = 'custom';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const button = fixture.debugElement.query(By.css('button')).nativeElement;
expect(button.getAttribute('id')).toBe('my-custom-button');
expect(button.getAttribute('tabindex')).toBe('11');
expect(button.getAttribute('title')).toBe('hello');
});
it('should be able to bind attributes both to parent and child nodes', () => {
@Component({
template: `
<button
attr.id="my-{{id}}-button"
[attr.title]="title"
attr.tabindex="{{1 + 3 + 7}}">
<span attr.title="span-{{title}}" id="custom-span" [attr.tabindex]="-1"></span>
</button>
`,
})
class Comp {
title = 'hello';
id = 'custom';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const button = fixture.debugElement.query(By.css('button')).nativeElement;
const span = fixture.debugElement.query(By.css('span')).nativeElement;
expect(button.getAttribute('id')).toBe('my-custom-button');
expect(button.getAttribute('tabindex')).toBe('11');
expect(button.getAttribute('title')).toBe('hello');
expect(span.getAttribute('id')).toBe('custom-span');
expect(span.getAttribute('tabindex')).toBe('-1');
expect(span.getAttribute('title')).toBe('span-hello');
});
it('should sanitize attribute values', () => {
@Component({
template: `<a [attr.href]="badUrl"></a>`,
})
class Comp {
badUrl: string|SafeUrl = 'javascript:true';
}
TestBed.configureTestingModule({declarations: [Comp]});
const fixture = TestBed.createComponent(Comp);
fixture.detectChanges();
const a = fixture.debugElement.query(By.css('a')).nativeElement;
// NOTE: different browsers will add `//` into the URI.
expect(a.href.indexOf('unsafe:')).toBe(0);
const domSanitizer: DomSanitizer = TestBed.inject(DomSanitizer);
fixture.componentInstance.badUrl =
domSanitizer.bypassSecurityTrustUrl('javascript:alert("this is fine")');
fixture.detectChanges();
// should not start with `unsafe:`.
expect(a.href.indexOf('unsafe:')).toBe(-1);
});
});
describe('attribute interpolation', () => {
it('should handle all varieties of interpolation', () => {
@Component({
template: `
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e{{e}}f{{f}}g{{g}}h{{h}}i{{i}}j"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e{{e}}f{{f}}g{{g}}h{{h}}i"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e{{e}}f{{f}}g{{g}}h"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e{{e}}f{{f}}g"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e{{e}}f"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d{{d}}e"></div>
<div attr.title="a{{a}}b{{b}}c{{c}}d"></div>
<div attr.title="a{{a}}b{{b}}c"></div>
<div attr.title="a{{a}}b"></div>
<div attr.title="{{a}}"></div>
`
})
class App {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
g = 7;
h = 8;
i = 9;
}
TestBed.configureTestingModule({
declarations: [App],
});
const fixture = TestBed.createComponent(App);
fixture.detectChanges();
const divs = fixture.debugElement.queryAll(By.css('div[title]'));
expect(divs.map(el => el.nativeElement.getAttribute('title'))).toEqual([
'a1b2c3d4e5f6g7h8i9j',
'a1b2c3d4e5f6g7h8i',
'a1b2c3d4e5f6g7h',
'a1b2c3d4e5f6g',
'a1b2c3d4e5f',
'a1b2c3d4e',
'a1b2c3d',
'a1b2c',
'a1b',
'1',
]);
});
});