352 lines
15 KiB
TypeScript
352 lines
15 KiB
TypeScript
/**
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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 {ErrorCode, makeDiagnostic, ngErrorCode} from '../../../src/ngtsc/diagnostics';
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import {absoluteFrom} from '../../../src/ngtsc/file_system';
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import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
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import {ClassDeclaration, Decorator, isNamedClassDeclaration} from '../../../src/ngtsc/reflection';
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import {getDeclaration} from '../../../src/ngtsc/testing';
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import {AnalysisOutput, CompileResult, DecoratorHandler, DetectResult, HandlerPrecedence, TraitState} from '../../../src/ngtsc/transform';
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import {loadTestFiles} from '../../../test/helpers';
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import {NgccTraitCompiler} from '../../src/analysis/ngcc_trait_compiler';
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import {Esm2015ReflectionHost} from '../../src/host/esm2015_host';
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import {createComponentDecorator} from '../../src/migrations/utils';
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import {EntryPointBundle} from '../../src/packages/entry_point_bundle';
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import {MockLogger} from '../helpers/mock_logger';
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import {makeTestEntryPointBundle} from '../helpers/utils';
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runInEachFileSystem(() => {
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describe('NgccTraitCompiler', () => {
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let _: typeof absoluteFrom;
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let mockClazz: any;
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let injectedDecorator: any = {name: 'InjectedDecorator'};
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beforeEach(() => {
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_ = absoluteFrom;
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const mockSourceFile: any = {
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fileName: _('/node_modules/some-package/entry-point/test-file.js'),
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};
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mockClazz = {
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name: {text: 'MockClazz'},
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getSourceFile: () => mockSourceFile,
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getStart: () => 0,
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getWidth: () => 0,
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};
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});
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function createCompiler({entryPoint, handlers}: {
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entryPoint: EntryPointBundle; handlers: DecoratorHandler<unknown, unknown, unknown>[]
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}) {
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const reflectionHost = new Esm2015ReflectionHost(new MockLogger(), false, entryPoint.src);
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return new NgccTraitCompiler(handlers, reflectionHost);
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}
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describe('injectSyntheticDecorator()', () => {
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it('should call `detect()` on each of the provided handlers', () => {
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const log: string[] = [];
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const handler1 = new TestHandler('handler1', log);
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const handler2 = new TestHandler('handler2', log);
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loadTestFiles([{name: _('/node_modules/test/index.js'), contents: ``}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler = createCompiler({entryPoint, handlers: [handler1, handler2]});
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compiler.injectSyntheticDecorator(mockClazz, injectedDecorator);
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expect(log).toEqual([
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`handler1:detect:MockClazz:InjectedDecorator`,
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`handler2:detect:MockClazz:InjectedDecorator`,
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]);
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});
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it('should call `analyze()` on each of the provided handlers whose `detect()` call returns a result',
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() => {
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const log: string[] = [];
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const handler1 = new TestHandler('handler1', log);
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const handler2 = new AlwaysDetectHandler('handler2', log);
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const handler3 = new TestHandler('handler3', log);
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loadTestFiles([{name: _('/node_modules/test/index.js'), contents: ``}]);
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const entryPoint = makeTestEntryPointBundle(
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'test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler = createCompiler({entryPoint, handlers: [handler1, handler2, handler3]});
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compiler.injectSyntheticDecorator(mockClazz, injectedDecorator);
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expect(log).toEqual([
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`handler1:detect:MockClazz:InjectedDecorator`,
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`handler2:detect:MockClazz:InjectedDecorator`,
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`handler3:detect:MockClazz:InjectedDecorator`,
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'handler2:analyze:MockClazz',
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]);
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});
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it('should inject a new class record into the compilation', () => {
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.WEAK);
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loadTestFiles([{name: _('/node_modules/test/index.js'), contents: ``}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler = createCompiler({entryPoint, handlers: [injectedHandler]});
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compiler.injectSyntheticDecorator(mockClazz, injectedDecorator);
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const record = compiler.recordFor(mockClazz);
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expect(record).toBeDefined();
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expect(record !.traits.length).toBe(1);
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});
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it('should add a new trait to an existing class record', () => {
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const directiveHandler = new DetectDecoratorHandler('Directive', HandlerPrecedence.WEAK);
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.WEAK);
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loadTestFiles([{
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name: _('/node_modules/test/index.js'),
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contents: `
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import {Directive} from '@angular/core';
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export class MyClass {};
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MyClass.decorators = [{ type: Directive }];
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`
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}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler =
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createCompiler({entryPoint, handlers: [directiveHandler, injectedHandler]});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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compiler.analyzeFile(entryPoint.src.file);
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compiler.injectSyntheticDecorator(myClass, injectedDecorator);
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const record = compiler.recordFor(myClass) !;
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expect(record).toBeDefined();
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expect(record.traits.length).toBe(2);
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expect(record.traits[0].detected.decorator !.name).toBe('Directive');
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expect(record.traits[1].detected.decorator !.name).toBe('InjectedDecorator');
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});
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it('should not add a weak handler when a primary handler already exists', () => {
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const directiveHandler = new DetectDecoratorHandler('Directive', HandlerPrecedence.PRIMARY);
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.WEAK);
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loadTestFiles([{
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name: _('/node_modules/test/index.js'),
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contents: `
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import {Directive} from '@angular/core';
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export class MyClass {};
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MyClass.decorators = [{ type: Directive }];
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`
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}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler =
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createCompiler({entryPoint, handlers: [directiveHandler, injectedHandler]});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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compiler.analyzeFile(entryPoint.src.file);
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compiler.injectSyntheticDecorator(myClass, injectedDecorator);
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const record = compiler.recordFor(myClass) !;
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expect(record).toBeDefined();
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expect(record.traits.length).toBe(1);
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expect(record.traits[0].detected.decorator !.name).toBe('Directive');
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});
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it('should replace an existing weak handler when injecting a primary handler', () => {
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const directiveHandler = new DetectDecoratorHandler('Directive', HandlerPrecedence.WEAK);
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.PRIMARY);
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loadTestFiles([{
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name: _('/node_modules/test/index.js'),
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contents: `
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import {Directive} from '@angular/core';
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export class MyClass {};
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MyClass.decorators = [{ type: Directive }];
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`
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}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler =
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createCompiler({entryPoint, handlers: [directiveHandler, injectedHandler]});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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compiler.analyzeFile(entryPoint.src.file);
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compiler.injectSyntheticDecorator(myClass, injectedDecorator);
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const record = compiler.recordFor(myClass) !;
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expect(record).toBeDefined();
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expect(record.traits.length).toBe(1);
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expect(record.traits[0].detected.decorator !.name).toBe('InjectedDecorator');
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});
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it('should produce an error when a primary handler is added when a primary handler is already present',
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() => {
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const directiveHandler =
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new DetectDecoratorHandler('Directive', HandlerPrecedence.PRIMARY);
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.PRIMARY);
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loadTestFiles([{
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name: _('/node_modules/test/index.js'),
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contents: `
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import {Directive} from '@angular/core';
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export class MyClass {};
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MyClass.decorators = [{ type: Directive }];
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`
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}]);
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const entryPoint = makeTestEntryPointBundle(
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'test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler =
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createCompiler({entryPoint, handlers: [directiveHandler, injectedHandler]});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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compiler.analyzeFile(entryPoint.src.file);
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compiler.injectSyntheticDecorator(myClass, injectedDecorator);
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const record = compiler.recordFor(myClass) !;
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expect(record).toBeDefined();
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expect(record.metaDiagnostics).toBeDefined();
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expect(record.metaDiagnostics !.length).toBe(1);
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expect(record.metaDiagnostics ![0].code)
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.toBe(ngErrorCode(ErrorCode.DECORATOR_COLLISION));
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expect(record.traits.length).toBe(0);
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});
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it('should report diagnostics from handlers', () => {
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const log: string[] = [];
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const handler = new DiagnosticProducingHandler('handler', log);
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loadTestFiles([{name: _('/node_modules/test/index.js'), contents: ``}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler = createCompiler({entryPoint, handlers: [handler]});
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const decorator = createComponentDecorator(mockClazz, {selector: 'comp', exportAs: null});
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compiler.injectSyntheticDecorator(mockClazz, decorator);
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const record = compiler.recordFor(mockClazz) !;
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const migratedTrait = record.traits[0];
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if (migratedTrait.state !== TraitState.ERRORED) {
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return fail('Expected migrated class trait to be in an error state');
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}
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expect(migratedTrait.diagnostics.length).toBe(1);
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expect(migratedTrait.diagnostics[0].messageText).toEqual(`test diagnostic`);
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});
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});
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describe('getAllDecorators', () => {
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it('should be null for classes without decorators', () => {
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loadTestFiles(
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[{name: _('/node_modules/test/index.js'), contents: `export class MyClass {};`}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler = createCompiler({entryPoint, handlers: []});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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const decorators = compiler.getAllDecorators(myClass);
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expect(decorators).toBeNull();
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});
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it('should include injected decorators', () => {
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const directiveHandler = new DetectDecoratorHandler('Directive', HandlerPrecedence.WEAK);
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const injectedHandler =
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new DetectDecoratorHandler('InjectedDecorator', HandlerPrecedence.WEAK);
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loadTestFiles([{
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name: _('/node_modules/test/index.js'),
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contents: `
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import {Directive} from '@angular/core';
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export class MyClass {};
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MyClass.decorators = [{ type: Directive }];
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`
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}]);
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const entryPoint =
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makeTestEntryPointBundle('test', 'esm2015', false, [_('/node_modules/test/index.js')]);
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const compiler =
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createCompiler({entryPoint, handlers: [directiveHandler, injectedHandler]});
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const myClass = getDeclaration(
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entryPoint.src.program, _('/node_modules/test/index.js'), 'MyClass',
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isNamedClassDeclaration);
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compiler.analyzeFile(entryPoint.src.file);
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compiler.injectSyntheticDecorator(myClass, injectedDecorator);
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const decorators = compiler.getAllDecorators(myClass) !;
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expect(decorators.length).toBe(2);
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expect(decorators[0].name).toBe('Directive');
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expect(decorators[1].name).toBe('InjectedDecorator');
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});
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});
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});
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});
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class TestHandler implements DecoratorHandler<unknown, unknown, unknown> {
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constructor(readonly name: string, protected log: string[]) {}
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precedence = HandlerPrecedence.PRIMARY;
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detect(node: ClassDeclaration, decorators: Decorator[]|null): DetectResult<unknown>|undefined {
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this.log.push(`${this.name}:detect:${node.name.text}:${decorators !.map(d => d.name)}`);
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return undefined;
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}
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analyze(node: ClassDeclaration): AnalysisOutput<unknown> {
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this.log.push(this.name + ':analyze:' + node.name.text);
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return {};
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}
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compile(node: ClassDeclaration): CompileResult|CompileResult[] {
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this.log.push(this.name + ':compile:' + node.name.text);
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return [];
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}
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}
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class AlwaysDetectHandler extends TestHandler {
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detect(node: ClassDeclaration, decorators: Decorator[]|null): DetectResult<unknown>|undefined {
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super.detect(node, decorators);
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const decorator = decorators !== null ? decorators[0] : null;
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return {trigger: node, decorator, metadata: {}};
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}
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}
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class DetectDecoratorHandler extends TestHandler {
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constructor(private decorator: string, readonly precedence: HandlerPrecedence) {
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super(decorator, []);
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}
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detect(node: ClassDeclaration, decorators: Decorator[]|null): DetectResult<unknown>|undefined {
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super.detect(node, decorators);
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if (decorators === null) {
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return undefined;
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}
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const decorator = decorators.find(decorator => decorator.name === this.decorator);
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if (decorator === undefined) {
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return undefined;
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}
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return {trigger: node, decorator, metadata: {}};
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}
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}
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class DiagnosticProducingHandler extends AlwaysDetectHandler {
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analyze(node: ClassDeclaration): AnalysisOutput<any> {
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super.analyze(node);
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return {diagnostics: [makeDiagnostic(9999, node, 'test diagnostic')]};
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}
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}
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