angular-cn/modules/@angular/core/testing/testing_internal.ts

251 lines
7.6 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {provide} from '../index';
import {StringMapWrapper} from '../src/facade/collection';
import {Math, global, isFunction, isPromise} from '../src/facade/lang';
import {AsyncTestCompleter} from './async_test_completer';
import {getTestInjector, inject} from './test_injector';
export {AsyncTestCompleter} from './async_test_completer';
export {MockAnimationPlayer} from './mock_animation_player';
export {inject} from './test_injector';
export * from './logger';
export * from './ng_zone_mock';
export * from './mock_application_ref';
export var proxy: ClassDecorator = (t: any /** TODO #9100 */) => t;
var _global = <any>(typeof window === 'undefined' ? global : window);
export var afterEach: Function = _global.afterEach;
export var expect: Function = _global.expect;
var jsmBeforeEach = _global.beforeEach;
var jsmDescribe = _global.describe;
var jsmDDescribe = _global.fdescribe;
var jsmXDescribe = _global.xdescribe;
var jsmIt = _global.it;
var jsmIIt = _global.fit;
var jsmXIt = _global.xit;
var runnerStack: any[] /** TODO #9100 */ = [];
var inIt = false;
jasmine.DEFAULT_TIMEOUT_INTERVAL = 3000;
var globalTimeOut = jasmine.DEFAULT_TIMEOUT_INTERVAL;
var testInjector = getTestInjector();
/**
* Mechanism to run `beforeEach()` functions of Angular tests.
*
* Note: Jasmine own `beforeEach` is used by this library to handle DI providers.
*/
class BeforeEachRunner {
private _fns: Array<Function> = [];
constructor(private _parent: BeforeEachRunner) {}
beforeEach(fn: Function): void { this._fns.push(fn); }
run(): void {
if (this._parent) this._parent.run();
this._fns.forEach((fn) => { fn(); });
}
}
// Reset the test providers before each test
jsmBeforeEach(() => { testInjector.reset(); });
function _describe(jsmFn: any /** TODO #9100 */, ...args: any[] /** TODO #9100 */) {
var parentRunner = runnerStack.length === 0 ? null : runnerStack[runnerStack.length - 1];
var runner = new BeforeEachRunner(parentRunner);
runnerStack.push(runner);
var suite = jsmFn(...args);
runnerStack.pop();
return suite;
}
export function describe(...args: any[] /** TODO #9100 */): void {
return _describe(jsmDescribe, ...args);
}
export function ddescribe(...args: any[] /** TODO #9100 */): void {
return _describe(jsmDDescribe, ...args);
}
export function xdescribe(...args: any[] /** TODO #9100 */): void {
return _describe(jsmXDescribe, ...args);
}
export function beforeEach(fn: Function): void {
if (runnerStack.length > 0) {
// Inside a describe block, beforeEach() uses a BeforeEachRunner
runnerStack[runnerStack.length - 1].beforeEach(fn);
} else {
// Top level beforeEach() are delegated to jasmine
jsmBeforeEach(fn);
}
}
/**
* Allows overriding default providers defined in test_injector.js.
*
* The given function must return a list of DI providers.
*
* Example:
*
* beforeEachProviders(() => [
* {provide: Compiler, useClass: MockCompiler},
* {provide: SomeToken, useValue: myValue},
* ]);
*/
export function beforeEachProviders(fn: any /** TODO #9100 */): void {
jsmBeforeEach(() => {
var providers = fn();
if (!providers) return;
testInjector.configureModule({providers: providers});
});
}
/**
* @deprecated
*/
export function beforeEachBindings(fn: any /** TODO #9100 */): void {
beforeEachProviders(fn);
}
function _it(jsmFn: Function, name: string, testFn: Function, testTimeOut: number): void {
if (runnerStack.length == 0) {
// This left here intentionally, as we should never get here, and it aids debugging.
debugger;
throw new Error('Empty Stack!');
}
var runner = runnerStack[runnerStack.length - 1];
var timeOut = Math.max(globalTimeOut, testTimeOut);
jsmFn(name, (done: any /** TODO #9100 */) => {
var completerProvider = {
provide: AsyncTestCompleter,
useFactory: () => {
// Mark the test as async when an AsyncTestCompleter is injected in an it()
return new AsyncTestCompleter();
}
};
testInjector.configureModule({providers: [completerProvider]});
runner.run();
inIt = true;
if (testFn.length == 0) {
let retVal = testFn();
if (isPromise(retVal)) {
// Asynchronous test function that returns a Promise - wait for completion.
(<Promise<any>>retVal).then(done, done.fail);
} else {
// Synchronous test function - complete immediately.
done();
}
} else {
// Asynchronous test function that takes in 'done' parameter.
testFn(done);
}
inIt = false;
}, timeOut);
}
export function it(
name: any /** TODO #9100 */, fn: any /** TODO #9100 */,
timeOut: any /** TODO #9100 */ = null): void {
return _it(jsmIt, name, fn, timeOut);
}
export function xit(
name: any /** TODO #9100 */, fn: any /** TODO #9100 */,
timeOut: any /** TODO #9100 */ = null): void {
return _it(jsmXIt, name, fn, timeOut);
}
export function iit(
name: any /** TODO #9100 */, fn: any /** TODO #9100 */,
timeOut: any /** TODO #9100 */ = null): void {
return _it(jsmIIt, name, fn, timeOut);
}
export interface GuinessCompatibleSpy extends jasmine.Spy {
/** By chaining the spy with and.returnValue, all calls to the function will return a specific
* value. */
andReturn(val: any): void;
/** By chaining the spy with and.callFake, all calls to the spy will delegate to the supplied
* function. */
andCallFake(fn: Function): GuinessCompatibleSpy;
/** removes all recorded calls */
reset(): any /** TODO #9100 */;
}
export class SpyObject {
constructor(type: any /** TODO #9100 */ = null) {
if (type) {
for (var prop in type.prototype) {
var m: any /** TODO #9100 */ = null;
try {
m = type.prototype[prop];
} catch (e) {
// As we are creating spys for abstract classes,
// these classes might have getters that throw when they are accessed.
// As we are only auto creating spys for methods, this
// should not matter.
}
if (typeof m === 'function') {
this.spy(prop);
}
}
}
}
// Noop so that SpyObject has the same interface as in Dart
noSuchMethod(args: any /** TODO #9100 */) {}
spy(name: any /** TODO #9100 */) {
if (!(this as any /** TODO #9100 */)[name]) {
(this as any /** TODO #9100 */)[name] = this._createGuinnessCompatibleSpy(name);
}
return (this as any /** TODO #9100 */)[name];
}
prop(name: any /** TODO #9100 */, value: any /** TODO #9100 */) {
(this as any /** TODO #9100 */)[name] = value;
}
static stub(
object: any /** TODO #9100 */ = null, config: any /** TODO #9100 */ = null,
overrides: any /** TODO #9100 */ = null) {
if (!(object instanceof SpyObject)) {
overrides = config;
config = object;
object = new SpyObject();
}
var m = StringMapWrapper.merge(config, overrides);
StringMapWrapper.forEach(m, (value: any /** TODO #9100 */, key: any /** TODO #9100 */) => {
object.spy(key).andReturn(value);
});
return object;
}
/** @internal */
_createGuinnessCompatibleSpy(name: any /** TODO #9100 */): GuinessCompatibleSpy {
var newSpy: GuinessCompatibleSpy = <any>jasmine.createSpy(name);
newSpy.andCallFake = <any>newSpy.and.callFake;
newSpy.andReturn = <any>newSpy.and.returnValue;
newSpy.reset = <any>newSpy.calls.reset;
// revisit return null here (previously needed for rtts_assert).
newSpy.and.returnValue(null);
return newSpy;
}
}