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perf(mock-render): caching generated component help-me-mom#731
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| import { | ||
| Component, | ||
| Directive, | ||
| Injectable, | ||
| NgModule, | ||
| } from '@angular/core'; | ||
| import { TestBed } from '@angular/core/testing'; | ||
| import { MockBuilder, ngMocks } from 'ng-mocks'; | ||
|
|
||
| @Injectable() | ||
| class TargetService { | ||
| public readonly name = 'target'; | ||
| } | ||
|
|
||
| @Directive({ | ||
| selector: 'target', | ||
| }) | ||
| class TargetDirective {} | ||
|
|
||
| @Component({ | ||
| selector: 'target', | ||
| template: '{{ service.name }}', | ||
| }) | ||
| class TargetComponent { | ||
| public constructor(public readonly service: TargetService) {} | ||
| } | ||
|
|
||
| @NgModule({ | ||
| declarations: [TargetComponent, TargetDirective], | ||
| exports: [TargetComponent], | ||
| providers: [TargetService], | ||
| }) | ||
| class TargetModule {} | ||
|
|
||
| describe('performance:MockBuilder', () => { | ||
| let timeStandard = 0; | ||
| let timeMockBuilder = 0; | ||
| let timeFasterBeforeEach = 0; | ||
| let timeFasterBeforeAll = 0; | ||
|
|
||
| jasmine.getEnv().addReporter({ | ||
| jasmineDone: () => { | ||
| // tslint:disable-next-line no-console | ||
| console.log(`performance:MockBuilder`); | ||
| // tslint:disable-next-line no-console | ||
| console.log(`Time standard: ${timeStandard}`); | ||
| // tslint:disable-next-line no-console | ||
| console.log(`Time beforeEach: ${timeFasterBeforeEach}`); | ||
| // tslint:disable-next-line no-console | ||
| console.log( | ||
| `Ratio standard / beforeEach: ${ | ||
| timeStandard / timeFasterBeforeEach | ||
| }`, | ||
| ); | ||
| // tslint:disable-next-line no-console | ||
| console.log(`Time beforeAll: ${timeFasterBeforeAll}`); | ||
| // tslint:disable-next-line no-console | ||
| console.log( | ||
| `Ratio beforeEach / beforeAll: ${ | ||
| timeFasterBeforeEach / timeFasterBeforeAll | ||
| }`, | ||
| ); | ||
| }, | ||
| }); | ||
|
|
||
| describe('standard', () => { | ||
| beforeAll(() => (timeStandard = Date.now())); | ||
| afterAll(() => (timeStandard = Date.now() - timeStandard)); | ||
|
|
||
| beforeEach(() => | ||
| TestBed.configureTestingModule({ | ||
| imports: [TargetModule], | ||
| }).compileComponents(), | ||
| ); | ||
|
|
||
| for (let i = 0; i < 100; i += 1) { | ||
| it(`#${i}`, () => { | ||
| const fixture = TestBed.createComponent(TargetComponent); | ||
| fixture.detectChanges(); | ||
| expect(ngMocks.formatText(fixture)).toEqual('target'); | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| describe('faster:MockBuilder', () => { | ||
| beforeAll(() => (timeMockBuilder = Date.now())); | ||
| afterAll(() => (timeMockBuilder = Date.now() - timeMockBuilder)); | ||
|
|
||
| beforeEach(() => | ||
| MockBuilder([TargetComponent, TargetService], TargetModule), | ||
| ); | ||
|
|
||
| for (let i = 0; i < 100; i += 1) { | ||
| it(`#${i}`, () => { | ||
| const fixture = TestBed.createComponent(TargetComponent); | ||
| fixture.detectChanges(); | ||
| expect(ngMocks.formatText(fixture)).toEqual('target'); | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| describe('faster:beforeEach', () => { | ||
| ngMocks.faster(); | ||
|
|
||
| beforeAll(() => (timeFasterBeforeEach = Date.now())); | ||
| afterAll( | ||
| () => | ||
| (timeFasterBeforeEach = Date.now() - timeFasterBeforeEach), | ||
| ); | ||
|
|
||
| beforeEach(() => | ||
| MockBuilder([TargetComponent, TargetService], TargetModule), | ||
| ); | ||
|
|
||
| for (let i = 0; i < 100; i += 1) { | ||
| it(`#${i}`, () => { | ||
| const fixture = TestBed.createComponent(TargetComponent); | ||
| fixture.detectChanges(); | ||
| expect(ngMocks.formatText(fixture)).toEqual('target'); | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| describe('faster:beforeAll', () => { | ||
| ngMocks.faster(); | ||
|
|
||
| beforeAll(() => (timeFasterBeforeAll = Date.now())); | ||
| afterAll( | ||
| () => (timeFasterBeforeAll = Date.now() - timeFasterBeforeAll), | ||
| ); | ||
|
|
||
| beforeAll(() => | ||
| MockBuilder([TargetComponent, TargetService], TargetModule), | ||
| ); | ||
|
|
||
| for (let i = 0; i < 100; i += 1) { | ||
| it(`#${i}`, () => { | ||
| const fixture = TestBed.createComponent(TargetComponent); | ||
| fixture.detectChanges(); | ||
| expect(ngMocks.formatText(fixture)).toEqual('target'); | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| it('ensures that faster is faster', () => { | ||
| // Usually, it is faster, but it is fine if we are down for 25% | ||
| expect(timeStandard / timeFasterBeforeEach).toBeGreaterThan(0.75); | ||
|
|
||
| // beforeEach should be definitely slower than beforeAll | ||
| expect( | ||
| timeFasterBeforeEach / timeFasterBeforeAll, | ||
| ).toBeGreaterThan(0.75); | ||
|
|
||
| // without faster should be always slower | ||
| expect(timeMockBuilder / timeFasterBeforeEach).toBeGreaterThan( | ||
| 0.75, | ||
| ); | ||
| }); | ||
| }); |
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