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import {    assert, assertEquals, assertThrows, assertNotEquals} from 'std/testing/asserts.ts'import { SEP } from 'std/path/separator.ts'import {    existsDir, existsDirSync, existsFile, existsFileSync,    ensureTextFile, lazyRemove} from './fs.ts'

Deno.test(`fs existsDirSync`, () => {    // true test cases    const dir = Deno.makeTempDirSync()    assert(existsDirSync(dir))    assert(existsDirSync(Deno.realPathSync(getStandardFolder())))    // false test cases    assertEquals(existsDirSync(`${dir}${SEP}foobar`), false)    const file = Deno.makeTempFileSync()    assertEquals(existsDirSync(file), false)    // error test cases    assertThrows(() => existsDirSync({} as string), Error)})

Deno.test(`fs async existsDir`, async () => {    // true test cases    assert(await existsDir(await Deno.realPath(getStandardFolder())))    const dir = await Deno.makeTempDir()    assertEquals(await existsDir(dir), true)    // false test cases    assertEquals(await existsDir(`${dir}${SEP}foobar`), false)    const file = await Deno.makeTempFile()    assertEquals(await existsDir(file), false)    // error test cases    existsDir({} as string).then(err => {        assert(err instanceof Error)    }).catch(e => console.error(e))})
Deno.test(`fs existsFileSync`, () => {    // true test cases    const file = Deno.makeTempFileSync()    assert(existsFileSync(file))    // false test cases    const dir = Deno.makeTempDirSync()    assert(!existsFileSync(`${dir}`))    assert(!existsFileSync(`${dir}${SEP}llksdafzxc.ts`))    // error test cases    assertThrows(() => existsDirSync({} as string), Error)})
Deno.test(`fs async existsFile`, async () => {    // true test cases    const file = await Deno.makeTempFile()    assert(await existsFile(file))    // false test cases    const dir = Deno.makeTempDirSync()    assertEquals(await existsFile(dir), false)    assertEquals(await existsFileSync(`${dir}${SEP}llksdafzxc.ts`), false)    // error test cases    existsFile({} as string).then(err => {        assert(err instanceof Error)    }).catch(e => console.error(e))})
Deno.test('ensureTextFile', async () => {    // true test case    const dirPath = await Deno.makeTempDir()    const textFilePath = `${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('lazyRemove', async () => {    // true test case    const filePath = await Deno.makeTempFile()    await lazyRemove(filePath)    assertEquals(existsFileSync(filePath), false)    // false test case    const dirPath = await Deno.makeTempDir()    await lazyRemove(`${dirPath}${SEP}asdfsdf.txt`)    assert(await existsDir(dirPath))    // error test    lazyRemove({} as string).then(err => {        assert(err instanceof Error)    }).catch(e => console.error(e))
})

/** * 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'}