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feat: add emptyDir for fs modules (denoland#263)
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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license. | ||
/** | ||
* Ensures that a directory is empty. | ||
* Deletes directory contents if the directory is not empty. | ||
* If the directory does not exist, it is created. | ||
* The directory itself is not deleted. | ||
* @export | ||
* @param {string} dir | ||
* @returns {Promise<void>} | ||
*/ | ||
export async function emptyDir(dir: string): Promise<void> { | ||
let items: Deno.FileInfo[] = []; | ||
try { | ||
items = await Deno.readDir(dir); | ||
} catch { | ||
// if not exist. then create it | ||
await Deno.mkdir(dir, true); | ||
return; | ||
} | ||
while (items.length) { | ||
const item = items.shift(); | ||
if (item && item.path) { | ||
await Deno.remove(item.path, { recursive: true }); | ||
} | ||
} | ||
} | ||
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||
/** | ||
* Ensures that a directory is empty. | ||
* Deletes directory contents if the directory is not empty. | ||
* If the directory does not exist, it is created. | ||
* The directory itself is not deleted. | ||
* @export | ||
* @param {string} dir | ||
* @returns {void} | ||
*/ | ||
export function emptyDirSync(dir: string): void { | ||
let items: Deno.FileInfo[] = []; | ||
try { | ||
items = Deno.readDirSync(dir); | ||
} catch { | ||
// if not exist. then create it | ||
Deno.mkdirSync(dir, true); | ||
return; | ||
} | ||
while (items.length) { | ||
const item = items.shift(); | ||
if (item && item.path) { | ||
Deno.removeSync(item.path, { recursive: true }); | ||
} | ||
} | ||
} |
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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license. | ||
import { test } from "../testing/mod.ts"; | ||
import { assertEquals, assertThrowsAsync } from "../testing/asserts.ts"; | ||
import { emptyDir, emptyDirSync } from "./empty_dir.ts"; | ||
import * as path from "./path/mod.ts"; | ||
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const testdataDir = path.resolve("fs", "testdata"); | ||
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test(async function emptyDirIfItNotExist() { | ||
const testDir = path.join(testdataDir, "empty_dir_test_1"); | ||
const testNestDir = path.join(testDir, "nest"); | ||
// empty a dir which not exist. then it will create new one | ||
await emptyDir(testNestDir); | ||
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try { | ||
// check the dir | ||
const stat = await Deno.stat(testNestDir); | ||
assertEquals(stat.isDirectory(), true); | ||
} finally { | ||
// remove the test dir | ||
Deno.remove(testDir, { recursive: true }); | ||
} | ||
}); | ||
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test(function emptyDirSyncIfItNotExist() { | ||
const testDir = path.join(testdataDir, "empty_dir_test_2"); | ||
const testNestDir = path.join(testDir, "nest"); | ||
// empty a dir which not exist. then it will create new one | ||
emptyDirSync(testNestDir); | ||
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try { | ||
// check the dir | ||
const stat = Deno.statSync(testNestDir); | ||
assertEquals(stat.isDirectory(), true); | ||
} finally { | ||
// remove the test dir | ||
Deno.remove(testDir, { recursive: true }); | ||
} | ||
}); | ||
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test(async function emptyDirIfItExist() { | ||
const testDir = path.join(testdataDir, "empty_dir_test_3"); | ||
const testNestDir = path.join(testDir, "nest"); | ||
// create test dir | ||
await emptyDir(testNestDir); | ||
const testDirFile = path.join(testNestDir, "test.ts"); | ||
// create test file in test dir | ||
await Deno.writeFile(testDirFile, new Uint8Array()); | ||
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// before empty: make sure file/directory exist | ||
const beforeFileStat = await Deno.stat(testDirFile); | ||
assertEquals(beforeFileStat.isFile(), true); | ||
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const beforeDirStat = await Deno.stat(testNestDir); | ||
assertEquals(beforeDirStat.isDirectory(), true); | ||
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await emptyDir(testDir); | ||
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// after empty: file/directory have already remove | ||
try { | ||
// test dir still there | ||
const stat = await Deno.stat(testDir); | ||
assertEquals(stat.isDirectory(), true); | ||
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// nest directory have been remove | ||
assertThrowsAsync(async () => { | ||
await Deno.stat(testNestDir); | ||
}); | ||
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// test file have been remove | ||
assertThrowsAsync(async () => { | ||
await Deno.stat(testDirFile); | ||
}); | ||
} finally { | ||
// remote test dir | ||
await Deno.remove(testDir, { recursive: true }); | ||
} | ||
}); | ||
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test(function emptyDirSyncIfItExist() { | ||
const testDir = path.join(testdataDir, "empty_dir_test_4"); | ||
const testNestDir = path.join(testDir, "nest"); | ||
// create test dir | ||
emptyDirSync(testNestDir); | ||
const testDirFile = path.join(testNestDir, "test.ts"); | ||
// create test file in test dir | ||
Deno.writeFileSync(testDirFile, new Uint8Array()); | ||
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// before empty: make sure file/directory exist | ||
const beforeFileStat = Deno.statSync(testDirFile); | ||
assertEquals(beforeFileStat.isFile(), true); | ||
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const beforeDirStat = Deno.statSync(testNestDir); | ||
assertEquals(beforeDirStat.isDirectory(), true); | ||
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emptyDirSync(testDir); | ||
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// after empty: file/directory have already remove | ||
try { | ||
// test dir still there | ||
const stat = Deno.statSync(testDir); | ||
assertEquals(stat.isDirectory(), true); | ||
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// nest directory have been remove | ||
assertThrowsAsync(async () => { | ||
Deno.statSync(testNestDir); | ||
}); | ||
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// test file have been remove | ||
assertThrowsAsync(async () => { | ||
Deno.statSync(testDirFile); | ||
}); | ||
} finally { | ||
// remote test dir | ||
Deno.removeSync(testDir, { recursive: true }); | ||
} | ||
}); |
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