12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576
import {  assert,  assertEquals,  assertNotEquals} from 'std/testing/asserts.ts'import { SEP } from 'std/path/separator.ts'import {  existsDir,  existsFile,  ensureTextFile,  lazyRemove} from './fs.ts'
Deno.test(`fs: existsDir`, async () => {  // true test cases  const dir = await Deno.makeTempDir()  assert(await existsDir(dir))  assert(await existsDir(await Deno.realPath(getStandardFolder())))  // false test cases  const file = await Deno.makeTempFile()  assertEquals(await existsDir(file), false)  assertEquals(await existsDir(`${dir}${SEP}foo${SEP}bar`), false)})
Deno.test(`fs: existsFile`, async () => {  // true test cases  const file = await Deno.makeTempFile()  assert(await existsFile(file))  // false test cases  const dir = await Deno.makeTempDir()  assert(!await existsFile(`${dir}`))  assert(!await existsFile(`${dir}${SEP}foo${SEP}bar`))})
Deno.test('fs: ensureTextFile', async () => {  // true test case  const dirPath = await Deno.makeTempDir()  const textFilePath = `${dirPath}${SEP}test.txt`  const content = 'This is a test'  await ensureTextFile(textFilePath, content)  assert(await existsFile(textFilePath))  const testContent = await Deno.readTextFile(textFilePath)  assertEquals(testContent, content)  // false test case  // illegal folder name  const textFilePath2 = `${SEP}test2.txt`  let testContent2 = ''  try {    await ensureTextFile(textFilePath2, content)    testContent2 = await Deno.readTextFile(textFilePath2)  } catch (error) {    assertNotEquals(testContent2, content)  }})
Deno.test('fs: lazyRemove', async () => {  // true test case  const filePath = await Deno.makeTempFile()  await lazyRemove(filePath)  assertEquals(await existsFile(filePath), false)  // false test case  const dirPath = await Deno.makeTempDir()  await lazyRemove(`${dirPath}${SEP}foo${SEP}bar.bin`)  assert(await existsDir(dirPath))})
/** * Returns an operating system-specific * example folder. * @returns 'C:\Windows' for Windows or *  '/tmp' for unix-based operating systems */const getStandardFolder = () => {  return Deno.build.os === 'windows' ? "C:\\Windows" : '/tmp'}