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
62 lines
2.6 KiB
TypeScript
62 lines
2.6 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 {AbsoluteFsPath, NgtscCompilerHost, absoluteFrom, getFileSystem} from '../../../src/ngtsc/file_system';
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import {TestFile} from '../../../src/ngtsc/file_system/testing';
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import {BundleProgram, makeBundleProgram} from '../../src/packages/bundle_program';
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import {EntryPointFormat, EntryPointJsonProperty} from '../../src/packages/entry_point';
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import {EntryPointBundle} from '../../src/packages/entry_point_bundle';
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import {NgccSourcesCompilerHost} from '../../src/packages/ngcc_compiler_host';
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/**
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*
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* @param format The format of the bundle.
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* @param files The source files to include in the bundle.
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* @param dtsFiles The typings files to include the bundle.
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*/
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export function makeTestEntryPointBundle(
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formatProperty: EntryPointJsonProperty, format: EntryPointFormat, isCore: boolean,
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srcRootNames: AbsoluteFsPath[], dtsRootNames?: AbsoluteFsPath[]): EntryPointBundle {
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const src = makeTestBundleProgram(srcRootNames[0], isCore);
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const dts = dtsRootNames ? makeTestDtsBundleProgram(dtsRootNames[0], isCore) : null;
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const isFlatCore = isCore && src.r3SymbolsFile === null;
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return {formatProperty, format, rootDirs: [absoluteFrom('/')], src, dts, isCore, isFlatCore};
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}
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export function makeTestBundleProgram(
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path: AbsoluteFsPath, isCore: boolean = false): BundleProgram {
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const fs = getFileSystem();
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const options = {allowJs: true, checkJs: false};
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const entryPointPath = fs.dirname(path);
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const host = new NgccSourcesCompilerHost(fs, options, entryPointPath);
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return makeBundleProgram(fs, isCore, path, 'r3_symbols.js', options, host);
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}
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export function makeTestDtsBundleProgram(
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path: AbsoluteFsPath, isCore: boolean = false): BundleProgram {
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const fs = getFileSystem();
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const options = {};
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const host = new NgtscCompilerHost(fs, options);
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return makeBundleProgram(fs, isCore, path, 'r3_symbols.d.ts', options, host);
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}
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export function convertToDirectTsLibImport(filesystem: TestFile[]) {
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return filesystem.map(file => {
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const contents =
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file.contents
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.replace(
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`import * as tslib_1 from 'tslib';`,
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`import { __decorate, __metadata, __read, __values, __param, __extends, __assign } from 'tslib';`)
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.replace(/tslib_1\./g, '');
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return {...file, contents};
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});
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}
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export function getRootFiles(testFiles: TestFile[]): AbsoluteFsPath[] {
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return testFiles.filter(f => f.isRoot !== false).map(f => absoluteFrom(f.name));
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}
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