本文整理汇总了TypeScript中@angular/common.JsonPipe类的典型用法代码示例。如果您正苦于以下问题：TypeScript JsonPipe类的具体用法？TypeScript JsonPipe怎么用？TypeScript JsonPipe使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了JsonPipe类的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: describe
describe('JsonPipe', () => {
var regNewLine = '\n';
var inceptionObj: any;
var inceptionObjString: string;
var pipe: JsonPipe;
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: AsyncTestCompleter) => {
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();
});
}));
});
});示例2: it
it("should throw when using normal Json pipe for circular structures", () => {
let o: any = {};
o.a = o;
let pipe = new JsonPipe();
let fn = () => {
pipe.transform(o);
};
expect(fn).toThrow(new TypeError('Converting circular structure to JSON'));
});示例3: describe
describe('JsonPipe', () => {
const regNewLine = '\n';
let inceptionObj: any;
let inceptionObjString: string;
let pipe: JsonPipe;
function normalize(obj: string): string { return obj.replace(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', () => {
const dream1 = normalize(pipe.transform(inceptionObj));
const dream2 = normalize(inceptionObjString);
expect(dream1).toEqual(dream2);
});
it('should return JSON-formatted string similar to Json.stringify', () => {
const dream1 = normalize(pipe.transform(inceptionObj));
const dream2 = normalize(JSON.stringify(inceptionObj, null, 2));
expect(dream1).toEqual(dream2);
});
});
describe('integration', () => {
@Component({selector: 'test-comp', template: '{{data | json}}'})
class TestComp {
data: any;
}
beforeEach(() => {
TestBed.configureTestingModule({declarations: [TestComp], imports: [CommonModule]});
});
it('should work with mutable objects', async(() => {
const fixture = TestBed.createComponent(TestComp);
const mutable: number[] = [1];
fixture.componentInstance.data = mutable;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('[\n 1\n]');
mutable.push(2);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('[\n 1,\n 2\n]');
}));
});
});示例4: it
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);
});示例5: expect
() => { expect(pipe.transform(inceptionObj)).toEqual(inceptionObjString); });示例6:
let fn = () => {
pipe.transform(o);
};