83 lines
3.2 KiB
TypeScript
83 lines
3.2 KiB
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {WrappedNodeExpr} from '@angular/compiler';
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import {R3Reference} from '@angular/compiler/src/compiler';
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import * as ts from 'typescript';
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import {LocalIdentifierStrategy, ReferenceEmitter} from '../../imports';
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import {PartialEvaluator} from '../../partial_evaluator';
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import {TypeScriptReflectionHost} from '../../reflection';
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import {LocalModuleScopeRegistry, MetadataDtsModuleScopeResolver} from '../../scope';
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import {getDeclaration, makeProgram} from '../../testing/in_memory_typescript';
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import {NgModuleDecoratorHandler} from '../src/ng_module';
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import {NoopReferencesRegistry} from '../src/references_registry';
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describe('NgModuleDecoratorHandler', () => {
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it('should resolve forwardRef', () => {
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const {program} = makeProgram([
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{
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name: 'node_modules/@angular/core/index.d.ts',
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contents: `
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export const Component: any;
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export const NgModule: any;
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export declare function forwardRef(fn: () => any): any;
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`,
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},
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{
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name: 'entry.ts',
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contents: `
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import {Component, forwardRef, NgModule} from '@angular/core';
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@Component({
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template: '',
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})
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export class TestComp {}
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@NgModule()
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export class TestModuleDependency {}
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@NgModule({
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declarations: [forwardRef(() => TestComp)],
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exports: [forwardRef(() => TestComp)],
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imports: [forwardRef(() => TestModuleDependency)]
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})
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export class TestModule {}
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`
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},
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]);
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const checker = program.getTypeChecker();
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const reflectionHost = new TypeScriptReflectionHost(checker);
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const evaluator = new PartialEvaluator(reflectionHost, checker);
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const referencesRegistry = new NoopReferencesRegistry();
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const scopeRegistry = new LocalModuleScopeRegistry(
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new MetadataDtsModuleScopeResolver(checker, reflectionHost, null), new ReferenceEmitter([]),
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null);
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const refEmitter = new ReferenceEmitter([new LocalIdentifierStrategy()]);
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const handler = new NgModuleDecoratorHandler(
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reflectionHost, evaluator, scopeRegistry, referencesRegistry, false, null, refEmitter);
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const TestModule = getDeclaration(program, 'entry.ts', 'TestModule', ts.isClassDeclaration);
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const detected =
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handler.detect(TestModule, reflectionHost.getDecoratorsOfDeclaration(TestModule));
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if (detected === undefined) {
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return fail('Failed to recognize @NgModule');
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}
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const moduleDef = handler.analyze(TestModule, detected.metadata).analysis !.ngModuleDef;
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expect(getReferenceIdentifierTexts(moduleDef.declarations)).toEqual(['TestComp']);
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expect(getReferenceIdentifierTexts(moduleDef.exports)).toEqual(['TestComp']);
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expect(getReferenceIdentifierTexts(moduleDef.imports)).toEqual(['TestModuleDependency']);
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function getReferenceIdentifierTexts(references: R3Reference[]) {
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return references.map(ref => (ref.value as WrappedNodeExpr<ts.Identifier>).node.text);
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}
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});
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});
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