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

111 lines
3.5 KiB
TypeScript

import {
beforeEach,
ddescribe,
describe,
expect,
iit,
inject,
it,
} from '@angular/core/testing/testing_internal';
import {AsyncTestCompleter} from '@angular/core/testing/testing_internal';
import {MockXHR} from '@angular/compiler/testing';
import {PromiseWrapper} from '../src/facade/async';
import {isPresent} from '../src/facade/lang';
export function main() {
describe('MockXHR', () => {
var xhr: MockXHR;
beforeEach(() => { xhr = new MockXHR(); });
function expectResponse(request: Promise<string>, url: string, response: string, done = null) {
function onResponse(text: string): string {
if (response === null) {
throw `Unexpected response ${url} -> ${text}`;
} else {
expect(text).toEqual(response);
if (isPresent(done)) done();
}
return text;
}
function onError(error: string): string {
if (response !== null) {
throw `Unexpected error ${url}`;
} else {
expect(error).toEqual(`Failed to load ${url}`);
if (isPresent(done)) done();
}
return error;
}
PromiseWrapper.then(request, onResponse, onError);
}
it('should return a response from the definitions', inject([AsyncTestCompleter], (async) => {
var url = '/foo';
var response = 'bar';
xhr.when(url, response);
expectResponse(xhr.get(url), url, response, () => async.done());
xhr.flush();
}));
it('should return an error from the definitions', inject([AsyncTestCompleter], (async) => {
var url = '/foo';
var response = null;
xhr.when(url, response);
expectResponse(xhr.get(url), url, response, () => async.done());
xhr.flush();
}));
it('should return a response from the expectations', inject([AsyncTestCompleter], (async) => {
var url = '/foo';
var response = 'bar';
xhr.expect(url, response);
expectResponse(xhr.get(url), url, response, () => async.done());
xhr.flush();
}));
it('should return an error from the expectations', inject([AsyncTestCompleter], (async) => {
var url = '/foo';
var response = null;
xhr.expect(url, response);
expectResponse(xhr.get(url), url, response, () => async.done());
xhr.flush();
}));
it('should not reuse expectations', () => {
var url = '/foo';
var response = 'bar';
xhr.expect(url, response);
xhr.get(url);
xhr.get(url);
expect(() => { xhr.flush(); }).toThrowError('Unexpected request /foo');
});
it('should return expectations before definitions', inject([AsyncTestCompleter], (async) => {
var url = '/foo';
xhr.when(url, 'when');
xhr.expect(url, 'expect');
expectResponse(xhr.get(url), url, 'expect');
expectResponse(xhr.get(url), url, 'when', () => async.done());
xhr.flush();
}));
it('should throw when there is no definitions or expectations', () => {
xhr.get('/foo');
expect(() => { xhr.flush(); }).toThrowError('Unexpected request /foo');
});
it('should throw when flush is called without any pending requests',
() => { expect(() => { xhr.flush(); }).toThrowError('No pending requests to flush'); });
it('should throw on unsatisfied expectations', () => {
xhr.expect('/foo', 'bar');
xhr.when('/bar', 'foo');
xhr.get('/bar');
expect(() => { xhr.flush(); }).toThrowError('Unsatisfied requests: /foo');
});
});
}