angular-cn/modules/angular2/test/change_detection/pipe_registry_spec.js

57 lines
1.4 KiB
JavaScript

import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {PipeRegistry} from 'angular2/src/change_detection/pipes/pipe_registry';
import {Pipe} from 'angular2/src/change_detection/pipes/pipe';
export function main() {
describe("pipe registry", () => {
var firstPipe = new Pipe();
var secondPipe = new Pipe();
it("should return the first pipe supporting the data type", () => {
var r = new PipeRegistry({
"type": [
new PipeFactory(false, firstPipe),
new PipeFactory(true, secondPipe)
]
});
expect(r.get("type", "some object")).toBe(secondPipe);
});
it("should throw when no matching type", () => {
var r = new PipeRegistry({});
expect(() => r.get("unknown", "some object")).toThrowError(
`Cannot find a pipe for type 'unknown' object 'some object'`
);
});
it("should throw when no matching pipe", () => {
var r = new PipeRegistry({
"type" : []
});
expect(() => r.get("type", "some object")).toThrowError(
`Cannot find a pipe for type 'type' object 'some object'`
);
});
});
}
class PipeFactory {
shouldSupport:boolean;
pipe:any;
constructor(shouldSupport:boolean, pipe:any) {
this.shouldSupport = shouldSupport;
this.pipe = pipe;
}
supports(obj):boolean {
return this.shouldSupport;
}
create():Pipe {
return this.pipe;
}
}