7186f9c016
To improve cross platform support, all file access (and path manipulation) is now done through a well known interface (`FileSystem`). For testing a number of `MockFileSystem` implementations are provided. These provide an in-memory file-system which emulates operating systems like OS/X, Unix and Windows. The current file system is always available via the static method, `FileSystem.getFileSystem()`. This is also used by a number of static methods on `AbsoluteFsPath` and `PathSegment`, to avoid having to pass `FileSystem` objects around all the time. The result of this is that one must be careful to ensure that the file-system has been initialized before using any of these static methods. To prevent this happening accidentally the current file system always starts out as an instance of `InvalidFileSystem`, which will throw an error if any of its methods are called. You can set the current file-system by calling `FileSystem.setFileSystem()`. During testing you can call the helper function `initMockFileSystem(os)` which takes a string name of the OS to emulate, and will also monkey-patch aspects of the TypeScript library to ensure that TS is also using the current file-system. Finally there is the `NgtscCompilerHost` to be used for any TypeScript compilation, which uses a given file-system. All tests that interact with the file-system should be tested against each of the mock file-systems. A series of helpers have been provided to support such tests: * `runInEachFileSystem()` - wrap your tests in this helper to run all the wrapped tests in each of the mock file-systems. * `addTestFilesToFileSystem()` - use this to add files and their contents to the mock file system for testing. * `loadTestFilesFromDisk()` - use this to load a mirror image of files on disk into the in-memory mock file-system. * `loadFakeCore()` - use this to load a fake version of `@angular/core` into the mock file-system. All ngcc and ngtsc source and tests now use this virtual file-system setup. PR Close #30921
30 lines
997 B
TypeScript
30 lines
997 B
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 {CtorParameter} from '../../../src/ngtsc/reflection';
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/**
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* Check that a given list of `CtorParameter`s has `typeValueReference`s of specific `ts.Identifier`
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* names.
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*/
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export function expectTypeValueReferencesForParameters(
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parameters: CtorParameter[], expectedParams: (string | null)[]) {
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parameters !.forEach((param, idx) => {
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const expected = expectedParams[idx];
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if (expected !== null) {
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if (param.typeValueReference === null || !param.typeValueReference.local ||
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!ts.isIdentifier(param.typeValueReference.expression)) {
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fail(`Incorrect typeValueReference generated, expected ${expected}`);
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} else {
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expect(param.typeValueReference.expression.text).toEqual(expected);
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}
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}
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});
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}
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