angular-docs-cn/modules/@angular/common/test/pipes/json_pipe_spec.ts

78 lines
2.4 KiB
TypeScript

import {
ddescribe,
describe,
it,
iit,
xit,
expect,
beforeEach,
afterEach,
inject,
} from '@angular/core/testing/testing_internal';
import {AsyncTestCompleter} from '@angular/core/testing/testing_internal';
import {TestComponentBuilder, ComponentFixture} from '@angular/compiler/testing';
import {Json, RegExp, NumberWrapper, StringWrapper} from '../../src/facade/lang';
import {Component} from '@angular/core';
import {JsonPipe} from '@angular/common';
export function main() {
describe("JsonPipe", () => {
var regNewLine = '\n';
var inceptionObj;
var inceptionObjString;
var pipe;
function normalize(obj: string): string { return StringWrapper.replace(obj, regNewLine, ''); }
beforeEach(() => {
inceptionObj = {dream: {dream: {dream: 'Limbo'}}};
inceptionObjString = "{\n" + " \"dream\": {\n" + " \"dream\": {\n" +
" \"dream\": \"Limbo\"\n" + " }\n" + " }\n" + "}";
pipe = new JsonPipe();
});
describe("transform", () => {
it("should return JSON-formatted string",
() => { expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString); });
it("should return JSON-formatted string even when normalized", () => {
var dream1 = normalize(pipe.transform(inceptionObj));
var dream2 = normalize(inceptionObjString);
expect(dream1).toEqual(dream2);
});
it("should return JSON-formatted string similar to Json.stringify", () => {
var dream1 = normalize(pipe.transform(inceptionObj));
var dream2 = normalize(Json.stringify(inceptionObj));
expect(dream1).toEqual(dream2);
});
});
describe('integration', () => {
it('should work with mutable objects',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
tcb.createAsync(TestComp).then((fixture) => {
let mutable: number[] = [1];
fixture.debugElement.componentInstance.data = mutable;
fixture.detectChanges();
expect(fixture.debugElement.nativeElement).toHaveText("[\n 1\n]");
mutable.push(2);
fixture.detectChanges();
expect(fixture.debugElement.nativeElement).toHaveText("[\n 1,\n 2\n]");
async.done();
});
}));
});
});
}
@Component({selector: 'test-comp', template: '{{data | json}}', pipes: [JsonPipe]})
class TestComp {
data: any;
}