77 lines
2.2 KiB
TypeScript
77 lines
2.2 KiB
TypeScript
import {
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ddescribe,
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xdescribe,
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describe,
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it,
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iit,
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xit,
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expect,
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beforeEach,
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afterEach
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} from 'angular2/testing_internal';
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import {Injector, Inject, provide, Pipe, PipeTransform} from 'angular2/core';
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import {ProtoPipes, Pipes} from 'angular2/src/core/pipes/pipes';
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import {PipeProvider} from 'angular2/src/core/pipes/pipe_provider';
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class PipeA implements PipeTransform {
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transform(a, b) {}
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onDestroy() {}
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}
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class PipeB implements PipeTransform {
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dep;
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constructor(@Inject("dep") dep: any) { this.dep = dep; }
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transform(a, b) {}
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onDestroy() {}
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}
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export function main() {
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describe("Pipes", () => {
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var injector;
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beforeEach(() => {
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injector = Injector.resolveAndCreate([provide('dep', {useValue: 'dependency'})]);
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});
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it('should instantiate a pipe', () => {
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var proto =
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ProtoPipes.fromProviders([PipeProvider.createFromType(PipeA, new Pipe({name: 'a'}))]);
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var pipes = new Pipes(proto, injector);
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expect(pipes.get("a").pipe).toBeAnInstanceOf(PipeA);
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});
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it('should throw when no pipe found', () => {
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var proto = ProtoPipes.fromProviders([]);
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var pipes = new Pipes(proto, injector);
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expect(() => pipes.get("invalid")).toThrowErrorWith("Cannot find pipe 'invalid'");
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});
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it('should inject dependencies from the provided injector', () => {
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var proto =
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ProtoPipes.fromProviders([PipeProvider.createFromType(PipeB, new Pipe({name: 'b'}))]);
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var pipes = new Pipes(proto, injector);
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expect((<any>pipes.get("b").pipe).dep).toEqual("dependency");
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});
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it('should cache pure pipes', () => {
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var proto = ProtoPipes.fromProviders(
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[PipeProvider.createFromType(PipeA, new Pipe({name: 'a', pure: true}))]);
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var pipes = new Pipes(proto, injector);
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expect(pipes.get("a").pure).toEqual(true);
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expect(pipes.get("a")).toBe(pipes.get("a"));
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});
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it('should NOT cache impure pipes', () => {
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var proto = ProtoPipes.fromProviders(
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[PipeProvider.createFromType(PipeA, new Pipe({name: 'a', pure: false}))]);
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var pipes = new Pipes(proto, injector);
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expect(pipes.get("a").pure).toEqual(false);
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expect(pipes.get("a")).not.toBe(pipes.get("a"));
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});
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});
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}
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