René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"test_runner: support mock file system","articleBody":"### What is the problem this feature will solve?\n\nThe current test requires writing files to a real disk when reading and writing files related to the file system, which is very unsafe.\r\n\r\nAfter all, the file may remain due to test case failure and other reasons.\n\n### What is the feature you are proposing to solve the problem?\n\nUnder the mock namespace, APIs are exposed to provide a mock file system.\r\n\r\n```js\r\nmock.fileSystem.enable({ });\r\n```\r\n\r\nAnd provide some options\r\n\r\ne.g.\r\n\r\nOverride the file that defined by defaults\r\n\r\n```js\r\nmock.fileSystem.enable({\r\n  files: {\r\n    '/path/to/file': new Uint8Array([0])\r\n  }\r\n});\r\n\r\n// it will read the virtual file system first if it does exist\r\n// if not found, then read the read the real file system\r\nfs.readFileSync('/path/to/file')\r\n```\r\n\r\nOverride the whole file system\r\n\r\n```js\r\nmock.fileSystem.enable({\r\n  files: {\r\n    '/path/to/file': new Uint8Array([0])\r\n  },\r\n  override: true // override the whole file system\r\n});\r\n\r\n// This file is exists in the real file system\r\n// But not define in the vitual file system, so it should throw an error\r\nfs.readFileSync('/etc/proc')\r\n```\r\n\n\n### What alternatives have you considered?\n\n[mock-fs](https://www.npmjs.com/package/mock-fs)","author":{"url":"https://github.com/axetroy","@type":"Person","name":"axetroy"},"datePublished":"2024-11-18T06:05:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/55902/node/issues/55902"}