angular-docs-cn/modules/@angular/compiler/test/directive_resolver_spec.ts

273 lines
9.0 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 {DirectiveResolver} from '@angular/compiler/src/directive_resolver';
import {Component, ContentChild, ContentChildren, Directive, HostBinding, HostListener, Input, Output, ViewChild, ViewChildren} from '@angular/core/src/metadata';
@Directive({selector: 'someDirective'})
class SomeDirective {
}
@Directive({selector: 'someChildDirective'})
class SomeChildDirective extends SomeDirective {
}
@Directive({selector: 'someDirective', inputs: ['c']})
class SomeDirectiveWithInputs {
@Input() a: any;
@Input('renamed') b: any;
c: any;
}
@Directive({selector: 'someDirective', outputs: ['c']})
class SomeDirectiveWithOutputs {
@Output() a: any;
@Output('renamed') b: any;
c: any;
}
@Directive({selector: 'someDirective', outputs: ['a']})
class SomeDirectiveWithDuplicateOutputs {
@Output() a: any;
}
@Directive({selector: 'someDirective', outputs: ['localA: a']})
class SomeDirectiveWithDuplicateRenamedOutputs {
@Output() a: any;
localA: any;
}
@Directive({selector: 'someDirective', inputs: ['a']})
class SomeDirectiveWithDuplicateInputs {
@Input() a: any;
}
@Directive({selector: 'someDirective', inputs: ['localA: a']})
class SomeDirectiveWithDuplicateRenamedInputs {
@Input() a: any;
localA: any;
}
@Directive({selector: 'someDirective'})
class SomeDirectiveWithSetterProps {
@Input('renamed')
set a(value: any) {}
}
@Directive({selector: 'someDirective'})
class SomeDirectiveWithGetterOutputs {
@Output('renamed')
get a(): any { return null; }
}
@Directive({selector: 'someDirective', host: {'[c]': 'c'}})
class SomeDirectiveWithHostBindings {
@HostBinding() a: any;
@HostBinding('renamed') b: any;
c: any;
}
@Directive({selector: 'someDirective', host: {'(c)': 'onC()'}})
class SomeDirectiveWithHostListeners {
@HostListener('a')
onA() {}
@HostListener('b', ['$event.value'])
onB(value: any) {}
}
@Directive({selector: 'someDirective', queries: {'cs': new ContentChildren('c')}})
class SomeDirectiveWithContentChildren {
@ContentChildren('a') as: any;
c: any;
}
@Directive({selector: 'someDirective', queries: {'cs': new ViewChildren('c')}})
class SomeDirectiveWithViewChildren {
@ViewChildren('a') as: any;
c: any;
}
@Directive({selector: 'someDirective', queries: {'c': new ContentChild('c')}})
class SomeDirectiveWithContentChild {
@ContentChild('a') a: any;
c: any;
}
@Directive({selector: 'someDirective', queries: {'c': new ViewChild('c')}})
class SomeDirectiveWithViewChild {
@ViewChild('a') a: any;
c: any;
}
@Component({selector: 'sample', template: 'some template', styles: ['some styles']})
class ComponentWithTemplate {
}
@Directive({
selector: 'someDirective',
host: {'[decorator]': 'decorator'},
inputs: ['decorator'],
})
class SomeDirectiveWithSameHostBindingAndInput {
@Input() @HostBinding() prop: any;
}
@Directive({selector: 'someDirective'})
class SomeDirectiveWithMalformedHostBinding1 {
@HostBinding('(a)')
onA() {}
}
@Directive({selector: 'someDirective'})
class SomeDirectiveWithMalformedHostBinding2 {
@HostBinding('[a]')
onA() {}
}
class SomeDirectiveWithoutMetadata {}
export function main() {
describe('DirectiveResolver', () => {
let resolver: DirectiveResolver;
beforeEach(() => { resolver = new DirectiveResolver(); });
it('should read out the Directive metadata', () => {
const directiveMetadata = resolver.resolve(SomeDirective);
expect(directiveMetadata)
.toEqual(new Directive(
{selector: 'someDirective', inputs: [], outputs: [], host: {}, queries: {}}));
});
it('should throw if not matching metadata is found', () => {
expect(() => {
resolver.resolve(SomeDirectiveWithoutMetadata);
}).toThrowError('No Directive annotation found on SomeDirectiveWithoutMetadata');
});
it('should not read parent class Directive metadata', function() {
const directiveMetadata = resolver.resolve(SomeChildDirective);
expect(directiveMetadata)
.toEqual(new Directive(
{selector: 'someChildDirective', inputs: [], outputs: [], host: {}, queries: {}}));
});
describe('inputs', () => {
it('should append directive inputs', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithInputs);
expect(directiveMetadata.inputs).toEqual(['c', 'a', 'b: renamed']);
});
it('should work with getters and setters', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithSetterProps);
expect(directiveMetadata.inputs).toEqual(['a: renamed']);
});
it('should throw if duplicate inputs', () => {
expect(() => {
resolver.resolve(SomeDirectiveWithDuplicateInputs);
}).toThrowError(`Input 'a' defined multiple times in 'SomeDirectiveWithDuplicateInputs'`);
});
it('should throw if duplicate inputs (with rename)', () => {
expect(() => { resolver.resolve(SomeDirectiveWithDuplicateRenamedInputs); })
.toThrowError(
`Input 'a' defined multiple times in 'SomeDirectiveWithDuplicateRenamedInputs'`);
});
});
describe('outputs', () => {
it('should append directive outputs', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithOutputs);
expect(directiveMetadata.outputs).toEqual(['c', 'a', 'b: renamed']);
});
it('should work with getters and setters', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithGetterOutputs);
expect(directiveMetadata.outputs).toEqual(['a: renamed']);
});
it('should throw if duplicate outputs', () => {
expect(() => { resolver.resolve(SomeDirectiveWithDuplicateOutputs); })
.toThrowError(
`Output event 'a' defined multiple times in 'SomeDirectiveWithDuplicateOutputs'`);
});
it('should throw if duplicate outputs (with rename)', () => {
expect(() => { resolver.resolve(SomeDirectiveWithDuplicateRenamedOutputs); })
.toThrowError(
`Output event 'a' defined multiple times in 'SomeDirectiveWithDuplicateRenamedOutputs'`);
});
});
describe('host', () => {
it('should append host bindings', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithHostBindings);
expect(directiveMetadata.host).toEqual({'[c]': 'c', '[a]': 'a', '[renamed]': 'b'});
});
it('should append host binding and input on the same property', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithSameHostBindingAndInput);
expect(directiveMetadata.host).toEqual({'[decorator]': 'decorator', '[prop]': 'prop'});
expect(directiveMetadata.inputs).toEqual(['decorator', 'prop']);
});
it('should append host listeners', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithHostListeners);
expect(directiveMetadata.host)
.toEqual({'(c)': 'onC()', '(a)': 'onA()', '(b)': 'onB($event.value)'});
});
it('should throw when @HostBinding name starts with "("', () => {
expect(() => resolver.resolve(SomeDirectiveWithMalformedHostBinding1))
.toThrowError('@HostBinding can not bind to events. Use @HostListener instead.');
});
it('should throw when @HostBinding name starts with "["', () => {
expect(() => resolver.resolve(SomeDirectiveWithMalformedHostBinding2))
.toThrowError(
`@HostBinding parameter should be a property name, 'class.<name>', or 'attr.<name>'.`);
});
});
describe('queries', () => {
it('should append ContentChildren', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithContentChildren);
expect(directiveMetadata.queries)
.toEqual({'cs': new ContentChildren('c'), 'as': new ContentChildren('a')});
});
it('should append ViewChildren', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithViewChildren);
expect(directiveMetadata.queries)
.toEqual({'cs': new ViewChildren('c'), 'as': new ViewChildren('a')});
});
it('should append ContentChild', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithContentChild);
expect(directiveMetadata.queries)
.toEqual({'c': new ContentChild('c'), 'a': new ContentChild('a')});
});
it('should append ViewChild', () => {
const directiveMetadata = resolver.resolve(SomeDirectiveWithViewChild);
expect(directiveMetadata.queries)
.toEqual({'c': new ViewChild('c'), 'a': new ViewChild('a')});
});
});
describe('Component', () => {
it('should read out the template related metadata from the Component metadata', () => {
const compMetadata: Component = resolver.resolve(ComponentWithTemplate);
expect(compMetadata.template).toEqual('some template');
expect(compMetadata.styles).toEqual(['some styles']);
});
});
});
}