angular-docs-cn/packages/zone.js/test/common/util.spec.ts

272 lines
9.5 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 {patchMethod, patchProperty, patchPrototype, zoneSymbol} from '../../lib/common/utils';
describe('utils', function() {
describe('patchMethod', () => {
it('should patch target where the method is defined', () => {
let args: any[]|undefined;
let self: any;
class Type {
method(..._args: any[]) {
args = _args;
self = this;
return 'OK';
}
}
const method = Type.prototype.method;
let delegateMethod: Function;
let delegateSymbol: string;
const instance = new Type();
expect(patchMethod(instance, 'method', (delegate: Function, symbol: string, name: string) => {
expect(name).toEqual('method');
delegateMethod = delegate;
delegateSymbol = symbol;
return function(self, args) { return delegate.apply(self, ['patch', args[0]]); };
})).toBe(delegateMethod !);
expect(instance.method('a0')).toEqual('OK');
expect(args).toEqual(['patch', 'a0']);
expect(self).toBe(instance);
expect(delegateMethod !).toBe(method);
expect(delegateSymbol !).toEqual(zoneSymbol('method'));
expect((Type.prototype as any)[delegateSymbol !]).toBe(method);
});
it('should not double patch', () => {
const Type = function() {};
const method = Type.prototype.method = function() {};
patchMethod(Type.prototype, 'method', (delegate) => {
return function(self, args: any[]) { return delegate.apply(self, ['patch', ...args]); };
});
const pMethod = Type.prototype.method;
expect(pMethod).not.toBe(method);
patchMethod(Type.prototype, 'method', (delegate) => {
return function(self, args) { return delegate.apply(self, ['patch', ...args]); };
});
expect(pMethod).toBe(Type.prototype.method);
});
it('should not patch property which is not configurable', () => {
const TestType = function() {};
const originalDefineProperty = (Object as any)[zoneSymbol('defineProperty')];
if (originalDefineProperty) {
originalDefineProperty(
TestType.prototype, 'nonConfigurableProperty',
{configurable: false, writable: true, value: 'test'});
} else {
Object.defineProperty(
TestType.prototype, 'nonConfigurableProperty',
{configurable: false, writable: true, value: 'test'});
}
patchProperty(TestType.prototype, 'nonConfigurableProperty');
const desc = Object.getOwnPropertyDescriptor(TestType.prototype, 'nonConfigurableProperty');
expect(desc !.writable).toBeTruthy();
expect(!desc !.get).toBeTruthy();
});
});
describe('patchPrototype', () => {
it('non configurable property desc should be patched', () => {
'use strict';
const TestFunction: any = function() {};
const log: string[] = [];
Object.defineProperties(TestFunction.prototype, {
'property1': {
value: function Property1(callback: Function) { Zone.root.run(callback); },
writable: true,
configurable: true,
enumerable: true
},
'property2': {
value: function Property2(callback: Function) { Zone.root.run(callback); },
writable: true,
configurable: false,
enumerable: true
}
});
const zone = Zone.current.fork({name: 'patch'});
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1<root>', 'property2<root>']);
log.length = 0;
patchPrototype(TestFunction.prototype, ['property1', 'property2']);
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1patch', 'property2patch']);
});
it('non writable property desc should not be patched', () => {
'use strict';
const TestFunction: any = function() {};
const log: string[] = [];
Object.defineProperties(TestFunction.prototype, {
'property1': {
value: function Property1(callback: Function) { Zone.root.run(callback); },
writable: true,
configurable: true,
enumerable: true
},
'property2': {
value: function Property2(callback: Function) { Zone.root.run(callback); },
writable: false,
configurable: true,
enumerable: true
}
});
const zone = Zone.current.fork({name: 'patch'});
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1<root>', 'property2<root>']);
log.length = 0;
patchPrototype(TestFunction.prototype, ['property1', 'property2']);
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1patch', 'property2<root>']);
});
it('readonly property desc should not be patched', () => {
'use strict';
const TestFunction: any = function() {};
const log: string[] = [];
Object.defineProperties(TestFunction.prototype, {
'property1': {
get: function() {
if (!this._property1) {
this._property1 = function Property2(callback: Function) { Zone.root.run(callback); };
}
return this._property1;
},
set: function(func: Function) { this._property1 = func; },
configurable: true,
enumerable: true
},
'property2': {
get: function() {
return function Property2(callback: Function) { Zone.root.run(callback); };
},
configurable: true,
enumerable: true
}
});
const zone = Zone.current.fork({name: 'patch'});
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1<root>', 'property2<root>']);
log.length = 0;
patchPrototype(TestFunction.prototype, ['property1', 'property2']);
zone.run(() => {
const instance = new TestFunction();
instance.property1(() => { log.push('property1' + Zone.current.name); });
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property1patch', 'property2<root>']);
});
it('non writable method should not be patched', () => {
'use strict';
const TestFunction: any = function() {};
const log: string[] = [];
Object.defineProperties(TestFunction.prototype, {
'property2': {
value: function Property2(callback: Function) { Zone.root.run(callback); },
writable: false,
configurable: true,
enumerable: true
}
});
const zone = Zone.current.fork({name: 'patch'});
zone.run(() => {
const instance = new TestFunction();
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property2<root>']);
log.length = 0;
patchMethod(
TestFunction.prototype, 'property2',
function(delegate: Function, delegateName: string, name: string) {
return function(self: any, args: any) { log.push('patched property2'); };
});
zone.run(() => {
const instance = new TestFunction();
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property2<root>']);
});
it('readonly method should not be patched', () => {
'use strict';
const TestFunction: any = function() {};
const log: string[] = [];
Object.defineProperties(TestFunction.prototype, {
'property2': {
get: function() {
return function Property2(callback: Function) { Zone.root.run(callback); };
},
configurable: true,
enumerable: true
}
});
const zone = Zone.current.fork({name: 'patch'});
zone.run(() => {
const instance = new TestFunction();
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property2<root>']);
log.length = 0;
patchMethod(
TestFunction.prototype, 'property2',
function(delegate: Function, delegateName: string, name: string) {
return function(self: any, args: any) { log.push('patched property2'); };
});
zone.run(() => {
const instance = new TestFunction();
instance.property2(() => { log.push('property2' + Zone.current.name); });
});
expect(log).toEqual(['property2<root>']);
});
});
});