angular-docs-cn/modules/angular2/test/directives/ng_class_spec.ts

412 lines
16 KiB
TypeScript

import {
AsyncTestCompleter,
TestComponentBuilder,
beforeEach,
beforeEachBindings,
ddescribe,
xdescribe,
describe,
el,
expect,
iit,
inject,
it,
xit,
} from 'angular2/test_lib';
import {List, ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
import {Component, View, NgFor, bind} from 'angular2/angular2';
import {NgClass} from 'angular2/src/directives/ng_class';
import {APP_VIEW_POOL_CAPACITY} from 'angular2/src/core/compiler/view_pool';
function detectChangesAndCheck(rootTC, classes: string, elIndex: number = 0) {
rootTC.detectChanges();
expect(rootTC.componentViewChildren[elIndex].nativeElement.className).toEqual(classes);
}
export function main() {
describe('binding to CSS class list', () => {
describe('viewpool support', () => {
beforeEachBindings(() => { return [bind(APP_VIEW_POOL_CAPACITY).toValue(100)]; });
it('should clean up when the directive is destroyed',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div *ng-for="var item of items" [ng-class]="item"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
rootTC.componentInstance.items = [['0']];
rootTC.detectChanges();
rootTC.componentInstance.items = [['1']];
detectChangesAndCheck(rootTC, 'ng-binding 1', 1);
async.done();
});
}));
});
describe('expressions evaluating to objects', () => {
it('should add classes specified in an object literal',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="{foo: true, bar: false}"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
async.done();
});
}));
it('should add classes specified in an object literal without change in class names',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="{'foo-bar': true, 'fooBar': true}"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo-bar fooBar');
async.done();
});
}));
it('should add and remove classes based on changes in object literal values',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="{foo: condition, bar: !condition}"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.condition = false;
detectChangesAndCheck(rootTC, 'ng-binding bar');
async.done();
});
}));
it('should add and remove classes based on changes to the expression object',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="objExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, 'ng-binding foo bar');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'baz', true);
detectChangesAndCheck(rootTC, 'ng-binding foo bar baz');
StringMapWrapper.delete(rootTC.componentInstance.objExpr, 'bar');
detectChangesAndCheck(rootTC, 'ng-binding foo baz');
async.done();
});
}));
it('should add and remove classes based on reference changes to the expression object',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="objExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.objExpr = {foo: true, bar: true};
detectChangesAndCheck(rootTC, 'ng-binding foo bar');
rootTC.componentInstance.objExpr = {baz: true};
detectChangesAndCheck(rootTC, 'ng-binding baz');
async.done();
});
}));
it('should remove active classes when expression evaluates to null',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="objExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.objExpr = null;
detectChangesAndCheck(rootTC, 'ng-binding');
rootTC.componentInstance.objExpr = {'foo': false, 'bar': true};
detectChangesAndCheck(rootTC, 'ng-binding bar');
async.done();
});
}));
});
describe('expressions evaluating to lists', () => {
it('should add classes specified in a list literal',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="['foo', 'bar', 'foo-bar', 'fooBar']"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding 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) => {
var template = '<div [ng-class]="arrExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
var arrExpr: List<string> = rootTC.componentInstance.arrExpr;
detectChangesAndCheck(rootTC, 'ng-binding foo');
arrExpr.push('bar');
detectChangesAndCheck(rootTC, 'ng-binding foo bar');
arrExpr[1] = 'baz';
detectChangesAndCheck(rootTC, 'ng-binding foo baz');
ListWrapper.remove(rootTC.componentInstance.arrExpr, 'baz');
detectChangesAndCheck(rootTC, 'ng-binding foo');
async.done();
});
}));
it('should add and remove classes when a reference changes',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="arrExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.arrExpr = ['bar'];
detectChangesAndCheck(rootTC, 'ng-binding bar');
async.done();
});
}));
it('should take initial classes into account when a reference changes',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div class="foo" [ng-class]="arrExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'foo ng-binding');
rootTC.componentInstance.arrExpr = ['bar'];
detectChangesAndCheck(rootTC, 'ng-binding foo bar');
async.done();
});
}));
});
describe('expressions evaluating to string', () => {
it('should add classes specified in a string literal',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="'foo bar foo-bar fooBar'"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding 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) => {
var template = '<div [ng-class]="strExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.strExpr = 'foo bar';
detectChangesAndCheck(rootTC, 'ng-binding foo bar');
rootTC.componentInstance.strExpr = 'baz';
detectChangesAndCheck(rootTC, 'ng-binding baz');
async.done();
});
}));
it('should remove active classes when switching from string to null',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="strExpr"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'ng-binding foo');
rootTC.componentInstance.strExpr = null;
detectChangesAndCheck(rootTC, 'ng-binding');
async.done();
});
}));
it('should take initial classes into account when switching from string to null',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div class="foo" [ng-class]="strExpr"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'foo ng-binding');
rootTC.componentInstance.strExpr = null;
detectChangesAndCheck(rootTC, 'ng-binding foo');
async.done();
});
}));
});
describe('cooperation with other class-changing constructs', () => {
it('should co-operate with the class attribute',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div [ng-class]="objExpr" class="init foo"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, 'init foo ng-binding bar');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'foo', false);
detectChangesAndCheck(rootTC, 'init ng-binding bar');
rootTC.componentInstance.objExpr = null;
detectChangesAndCheck(rootTC, 'init ng-binding foo');
async.done();
});
}));
it('should co-operate with the interpolated class attribute',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="objExpr" class="{{'init foo'}}"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, `{{'init foo'}} ng-binding init foo bar`);
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'foo', false);
detectChangesAndCheck(rootTC, `{{'init foo'}} ng-binding init bar`);
rootTC.componentInstance.objExpr = null;
detectChangesAndCheck(rootTC, `{{'init foo'}} ng-binding init foo`);
async.done();
});
}));
it('should co-operate with the class attribute and binding to it',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = `<div [ng-class]="objExpr" class="init" [class]="'foo'"></div>`;
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, `init ng-binding foo bar`);
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'foo', false);
detectChangesAndCheck(rootTC, `init ng-binding bar`);
rootTC.componentInstance.objExpr = null;
detectChangesAndCheck(rootTC, `init ng-binding foo`);
async.done();
});
}));
it('should co-operate with the class attribute and class.name binding',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template =
'<div class="init foo" [ng-class]="objExpr" [class.baz]="condition"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'init foo ng-binding baz');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, 'init foo ng-binding baz bar');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'foo', false);
detectChangesAndCheck(rootTC, 'init ng-binding baz bar');
rootTC.componentInstance.condition = false;
detectChangesAndCheck(rootTC, 'init ng-binding bar');
async.done();
});
}));
it('should co-operate with initial class and class attribute binding when binding changes',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
var template = '<div class="init" [ng-class]="objExpr" [class]="strExpr"></div>';
tcb.overrideTemplate(TestComponent, template)
.createAsync(TestComponent)
.then((rootTC) => {
detectChangesAndCheck(rootTC, 'init ng-binding foo');
StringMapWrapper.set(rootTC.componentInstance.objExpr, 'bar', true);
detectChangesAndCheck(rootTC, 'init ng-binding foo bar');
rootTC.componentInstance.strExpr = 'baz';
detectChangesAndCheck(rootTC, 'init ng-binding bar baz foo');
rootTC.componentInstance.objExpr = null;
detectChangesAndCheck(rootTC, 'init ng-binding baz');
async.done();
});
}));
});
})
}
@Component({selector: 'test-cmp'})
@View({directives: [NgClass, NgFor]})
class TestComponent {
condition: boolean = true;
items: any[];
arrExpr: List<string> = ['foo'];
objExpr = {'foo': true, 'bar': false};
strExpr = 'foo';
}