52 lines
2.0 KiB
TypeScript
52 lines
2.0 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 * as ts from 'typescript';
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import NgOptions from '../src/options';
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import {formatDiagnostics, TsickleCompilerHost} from '../src/compiler_host';
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import {writeTempFile} from './test_support';
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describe('Compiler Host', () => {
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function makeProgram(fileName: string, source: string): [ts.Program, ts.CompilerHost, NgOptions] {
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let fn = writeTempFile(fileName, source);
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let opts: NgOptions = {
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target: ts.ScriptTarget.ES5,
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types: [],
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genDir: '/tmp',
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basePath: '/tmp',
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noEmit: true,
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};
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// TsickleCompilerHost wants a ts.Program, which is the result of
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// parsing and typechecking the code before tsickle processing.
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// So we must create and run the entire stack of CompilerHost.
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let host = ts.createCompilerHost(opts);
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let program = ts.createProgram([fn], opts, host);
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// To get types resolved, you must first call getPreEmitDiagnostics.
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let diags = formatDiagnostics(ts.getPreEmitDiagnostics(program));
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expect(diags).toEqual('');
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return [program, host, opts];
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}
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it('inserts JSDoc annotations', () => {
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const [program, host, opts] = makeProgram('foo.ts', 'let x: number = 123');
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const tsickleHost = new TsickleCompilerHost(host, program, opts);
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const f = tsickleHost.getSourceFile(program.getRootFileNames()[0], ts.ScriptTarget.ES5);
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expect(f.text).toContain('/** @type {?} */');
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});
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it('reports diagnostics about existing JSDoc', () => {
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const [program, host, opts] =
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makeProgram('error.ts', '/** @param {string} x*/ function f(x: string){};');
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const tsickleHost = new TsickleCompilerHost(host, program, opts);
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const f = tsickleHost.getSourceFile(program.getRootFileNames()[0], ts.ScriptTarget.ES5);
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expect(formatDiagnostics(tsickleHost.diagnostics)).toContain('redundant with TypeScript types');
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});
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});
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