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index.test.ts
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index.test.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
describe('replacePathSepForRegex()', () => {
let replacePathSepForRegex: (str: string) => string;
describe('posix', () => {
beforeAll(() => {
jest.mock('path', () => ({
...jest.createMockFromModule<typeof import('path')>('path'),
sep: '/',
}));
jest.isolateModules(() => {
replacePathSepForRegex = require('../').replacePathSepForRegex;
});
});
it('should return the path', () => {
const expected = {};
expect(replacePathSepForRegex(expected as string)).toBe(expected);
});
});
describe('win32', () => {
beforeAll(() => {
jest.mock('path', () => ({
...jest.createMockFromModule<typeof import('path')>('path'),
sep: '\\',
}));
jest.isolateModules(() => {
replacePathSepForRegex = require('../').replacePathSepForRegex;
});
});
it('should replace POSIX path separators', () => {
expect(replacePathSepForRegex('a/b/c')).toBe('a\\\\b\\\\c');
// When a regular expression is created with a string, not enclosing
// slashes like "/<pattern>/", the "/" character does not need to be
// escaped as "\/". The result is the double path separator: "\\"
expect(replacePathSepForRegex('a\\/b')).toBe('a\\\\\\\\b');
});
it('should escape Windows path separators', () => {
expect(replacePathSepForRegex('a\\b\\c')).toBe('a\\\\b\\\\c');
});
it('should not escape an escaped dot', () => {
expect(replacePathSepForRegex('a\\.dotfile')).toBe('a\\.dotfile');
expect(replacePathSepForRegex('a\\\\\\.dotfile')).toBe('a\\\\\\.dotfile');
});
it('should not escape an escaped regexp symbol', () => {
expect(replacePathSepForRegex('b\\(86')).toBe('b\\(86');
});
it('should escape Windows path separators inside groups', () => {
expect(replacePathSepForRegex('[/\\\\]')).toBe('[\\\\\\\\]');
});
it('should escape Windows path separator at the beginning', () => {
expect(replacePathSepForRegex('\\a')).toBe('\\\\a');
});
it('should not escape several already escaped path separators', () => {
expect(replacePathSepForRegex('\\\\\\\\')).toBe('\\\\\\\\');
});
});
});