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feat(TranslateCompiler): new compiler that you can override to pre-pr…
…ocess translations Whenever translations are added (manually or by a loader), they are passed to the compiler for pre-processing. The default (TranslateFakeCompiler) does nothing.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| import {Injectable} from "@angular/core"; | ||
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|
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| export abstract class TranslateCompiler { | ||
| abstract compile(value: string, lang: string): string | Function; | ||
| abstract compileTranslations(translations: any, lang: string): any; | ||
| } | ||
|
|
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| /** | ||
| * This compiler is just a placeholder that does nothing, in case you don't need a compiler at all | ||
| */ | ||
| @Injectable() | ||
| export class TranslateFakeCompiler extends TranslateCompiler { | ||
| compile(value: string, lang: string): string | Function { | ||
| return value; | ||
| } | ||
|
|
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| compileTranslations(translations: any, lang: string): any { | ||
| return translations; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| import {Injector} from "@angular/core"; | ||
| import {TestBed, getTestBed} from "@angular/core/testing"; | ||
| import {TranslateService, TranslateModule, TranslateLoader, TranslateCompiler, TranslateFakeCompiler} from "../index"; | ||
| import {Observable} from "rxjs/Observable"; | ||
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| let translations: any = {LOAD: 'This is a test'}; | ||
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| class FakeLoader implements TranslateLoader { | ||
| getTranslation(lang: string): Observable<any> { | ||
| return Observable.of(translations); | ||
| } | ||
| } | ||
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| describe('TranslateCompiler', () => { | ||
| let injector: Injector; | ||
| let translate: TranslateService; | ||
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| let prepare = (_injector: Injector) => { | ||
| translate = _injector.get(TranslateService); | ||
| }; | ||
|
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| describe('with default TranslateFakeCompiler', () => { | ||
| beforeEach(() => { | ||
| TestBed.configureTestingModule({ | ||
| imports: [ | ||
| TranslateModule.forRoot({ | ||
| loader: {provide: TranslateLoader, useClass: FakeLoader}, | ||
| compiler: {provide: TranslateCompiler, useClass: TranslateFakeCompiler} | ||
| }) | ||
| ], | ||
| }); | ||
| injector = getTestBed(); | ||
| prepare(injector); | ||
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| translate.use('en'); | ||
| }); | ||
|
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| it('should use the correct compiler', () => { | ||
| expect(translate).toBeDefined(); | ||
| expect(translate.compiler).toBeDefined(); | ||
| expect(translate.compiler instanceof TranslateFakeCompiler).toBeTruthy(); | ||
| }); | ||
|
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| it('should use the compiler on loading translations', () => { | ||
| translate.get('LOAD').subscribe((res: string) => { | ||
| expect(res).toBe('This is a test'); | ||
| }); | ||
| }); | ||
|
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| it('should use the compiler on manually adding a translation object', () => { | ||
| translate.setTranslation('en', {'SET-TRANSLATION': 'A manually added translation'}); | ||
| expect(translate.instant('SET-TRANSLATION')).toBe('A manually added translation'); | ||
| }); | ||
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| it('should use the compiler on manually adding a single translation', () => { | ||
| translate.set('SET', 'Another manually added translation', 'en'); | ||
| expect(translate.instant('SET')).toBe('Another manually added translation'); | ||
| }); | ||
| }); | ||
|
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| describe('with a custom compiler implementation', () => { | ||
| class CustomCompiler implements TranslateCompiler { | ||
| compile(value: string, lang: string): string { | ||
| return value + '|compiled'; | ||
| } | ||
| compileTranslations(translation: any, lang: string): Object { | ||
| return Object.keys(translation).reduce((acc: any, key) => { | ||
| acc[key] = () => translation[key] + '|compiled'; | ||
| return acc; | ||
| }, {}); | ||
| } | ||
| } | ||
|
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| beforeEach(() => { | ||
| TestBed.configureTestingModule({ | ||
| imports: [ | ||
| TranslateModule.forRoot({ | ||
| loader: {provide: TranslateLoader, useClass: FakeLoader}, | ||
| compiler: {provide: TranslateCompiler, useClass: CustomCompiler} | ||
| }) | ||
| ], | ||
| }); | ||
| injector = getTestBed(); | ||
| prepare(injector); | ||
|
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| translate.use('en'); | ||
| }); | ||
|
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| it('should use the correct compiler', () => { | ||
| expect(translate).toBeDefined(); | ||
| expect(translate.compiler).toBeDefined(); | ||
| expect(translate.compiler instanceof CustomCompiler).toBeTruthy(); | ||
| }); | ||
|
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| it('should use the compiler on loading translations', () => { | ||
| translate.get('LOAD').subscribe((res: string) => { | ||
| expect(res).toBe('This is a test|compiled'); | ||
| }); | ||
| }); | ||
|
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| it('should use the compiler on manually adding a translation object', () => { | ||
| translate.setTranslation('en', {'SET-TRANSLATION': 'A manually added translation'}); | ||
| expect(translate.instant('SET-TRANSLATION')).toBe('A manually added translation|compiled'); | ||
| }); | ||
|
|
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| it('should use the compiler on manually adding a single translation', () => { | ||
| translate.set('SET', 'Another manually added translation', 'en'); | ||
| expect(translate.instant('SET')).toBe('Another manually added translation|compiled'); | ||
| }); | ||
| }); | ||
| }); |
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