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utils.spec.ts
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utils.spec.ts
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import fs from 'node:fs'
import path from 'node:path'
import { describe, expect, test } from 'vitest'
import {
asyncFlatten,
bareImportRE,
flattenId,
generateCodeFrame,
getHash,
getLocalhostAddressIfDiffersFromDNS,
injectQuery,
isFileReadable,
isWindows,
posToNumber,
processSrcSetSync,
resolveHostname,
} from '../utils'
describe('bareImportRE', () => {
test('should work with normal package name', () => {
expect(bareImportRE.test('vite')).toBe(true)
})
test('should work with scoped package name', () => {
expect(bareImportRE.test('@vitejs/plugin-vue')).toBe(true)
})
test('should work with absolute paths', () => {
expect(bareImportRE.test('/foo')).toBe(false)
expect(bareImportRE.test('C:/foo')).toBe(false)
expect(bareImportRE.test('C:\\foo')).toBe(false)
})
test('should work with relative path', () => {
expect(bareImportRE.test('./foo')).toBe(false)
expect(bareImportRE.test('.\\foo')).toBe(false)
})
})
describe('injectQuery', () => {
if (isWindows) {
// this test will work incorrectly on unix systems
test('normalize windows path', () => {
expect(injectQuery('C:\\User\\Vite\\Project', 'direct')).toEqual(
'C:/User/Vite/Project?direct',
)
})
test('absolute file path', () => {
expect(injectQuery('C:\\test-file.vue', 'direct')).toEqual(
'C:/test-file.vue?direct',
)
})
test('absolute file path with parameters', () => {
expect(
injectQuery('C:\\test-file.vue?vue&type=template&lang.js', 'direct'),
).toEqual('C:/test-file.vue?direct&vue&type=template&lang.js')
})
}
test('relative path', () => {
expect(injectQuery('usr/vite/%20a%20', 'direct')).toEqual(
'usr/vite/%20a%20?direct',
)
expect(injectQuery('./usr/vite/%20a%20', 'direct')).toEqual(
'./usr/vite/%20a%20?direct',
)
expect(injectQuery('../usr/vite/%20a%20', 'direct')).toEqual(
'../usr/vite/%20a%20?direct',
)
})
test('path with hash', () => {
expect(injectQuery('/usr/vite/path with space/#1?2/', 'direct')).toEqual(
'/usr/vite/path with space/?direct#1?2/',
)
})
test('path with protocol', () => {
expect(injectQuery('file:///usr/vite/%20a%20', 'direct')).toMatch(
'file:///usr/vite/%20a%20?direct',
)
expect(injectQuery('http://usr.vite/%20a%20', 'direct')).toMatch(
'http://usr.vite/%20a%20?direct',
)
})
test('path with multiple spaces', () => {
expect(injectQuery('/usr/vite/path with space', 'direct')).toEqual(
'/usr/vite/path with space?direct',
)
})
test('path with multiple % characters', () => {
expect(injectQuery('/usr/vite/not%20a%20space', 'direct')).toEqual(
'/usr/vite/not%20a%20space?direct',
)
})
test('path with %25', () => {
expect(injectQuery('/usr/vite/%25hello%25', 'direct')).toEqual(
'/usr/vite/%25hello%25?direct',
)
})
test('path with Unicode', () => {
expect(injectQuery('/usr/vite/東京', 'direct')).toEqual(
'/usr/vite/東京?direct',
)
})
test('path with Unicode, space, and %', () => {
expect(injectQuery('/usr/vite/東京 %20 hello', 'direct')).toEqual(
'/usr/vite/東京 %20 hello?direct',
)
})
})
describe('resolveHostname', () => {
test('defaults to localhost', async () => {
const resolved = await getLocalhostAddressIfDiffersFromDNS()
expect(await resolveHostname(undefined)).toEqual({
host: 'localhost',
name: resolved ?? 'localhost',
})
})
test('accepts localhost', async () => {
const resolved = await getLocalhostAddressIfDiffersFromDNS()
expect(await resolveHostname('localhost')).toEqual({
host: 'localhost',
name: resolved ?? 'localhost',
})
})
test('accepts 0.0.0.0', async () => {
expect(await resolveHostname('0.0.0.0')).toEqual({
host: '0.0.0.0',
name: 'localhost',
})
})
test('accepts ::', async () => {
expect(await resolveHostname('::')).toEqual({
host: '::',
name: 'localhost',
})
})
test('accepts 0000:0000:0000:0000:0000:0000:0000:0000', async () => {
expect(
await resolveHostname('0000:0000:0000:0000:0000:0000:0000:0000'),
).toEqual({
host: '0000:0000:0000:0000:0000:0000:0000:0000',
name: 'localhost',
})
})
})
describe('posToNumber', () => {
test('simple', () => {
const actual = posToNumber('a\nb', { line: 2, column: 0 })
expect(actual).toBe(2)
})
test('pass though pos', () => {
const actual = posToNumber('a\nb', 2)
expect(actual).toBe(2)
})
test('empty line', () => {
const actual = posToNumber('a\n\nb', { line: 3, column: 0 })
expect(actual).toBe(3)
})
test('out of range', () => {
const actual = posToNumber('a\nb', { line: 4, column: 0 })
expect(actual).toBe(4)
})
})
describe('generateCodeFrames', () => {
const source = `
import foo from './foo'
foo()
`.trim()
const sourceCrLf = source.replace(/\n/, '\r\n')
const longSource = `
import foo from './foo'
foo()
// 1
// 2
// 3
`.trim()
const expectSnapshot = (value: string) => {
try {
// add new line to make snapshot easier to read
expect('\n' + value + '\n').toMatchSnapshot()
} catch (e) {
// don't include this function in stacktrace
Error.captureStackTrace(e, expectSnapshot)
throw e
}
}
test('start with number', () => {
expectSnapshot(generateCodeFrame(source, -1))
expectSnapshot(generateCodeFrame(source, 0))
expectSnapshot(generateCodeFrame(source, 1))
expectSnapshot(generateCodeFrame(source, 24))
})
test('start with postion', () => {
expectSnapshot(generateCodeFrame(source, { line: 1, column: 0 }))
expectSnapshot(generateCodeFrame(source, { line: 1, column: 1 }))
expectSnapshot(generateCodeFrame(source, { line: 2, column: 0 }))
})
test('works with CRLF', () => {
expectSnapshot(generateCodeFrame(sourceCrLf, { line: 2, column: 0 }))
})
test('end', () => {
expectSnapshot(generateCodeFrame(source, 0, 0))
expectSnapshot(generateCodeFrame(source, 0, 23))
expectSnapshot(generateCodeFrame(source, 0, 29))
expectSnapshot(generateCodeFrame(source, 0, source.length))
expectSnapshot(generateCodeFrame(source, 0, source.length + 1))
expectSnapshot(generateCodeFrame(source, 0, source.length + 100))
})
test('range', () => {
expectSnapshot(generateCodeFrame(longSource, { line: 3, column: 0 }))
expectSnapshot(
generateCodeFrame(
longSource,
{ line: 3, column: 0 },
{ line: 4, column: 0 },
),
)
})
test('invalid start > end', () => {
expectSnapshot(generateCodeFrame(source, 2, 0))
})
})
describe('getHash', () => {
test('8-digit hex', () => {
const hash = getHash(Buffer.alloc(0))
expect(hash).toMatch(/^[\da-f]{8}$/)
})
})
describe('asyncFlatten', () => {
test('plain array', async () => {
const arr = await asyncFlatten([1, 2, 3])
expect(arr).toEqual([1, 2, 3])
})
test('nested array', async () => {
const arr = await asyncFlatten([1, 2, 3, [4, 5, 6]])
expect(arr).toEqual([1, 2, 3, 4, 5, 6])
})
test('nested falsy array', async () => {
const arr = await asyncFlatten([1, 2, false, [4, null, undefined]])
expect(arr).toEqual([1, 2, false, 4, null, undefined])
})
test('plain promise array', async () => {
const arr = await asyncFlatten([1, 2, Promise.resolve(3)])
expect(arr).toEqual([1, 2, 3])
})
test('nested promise array', async () => {
const arr = await asyncFlatten([
1,
2,
Promise.resolve(3),
Promise.resolve([4, 5, 6]),
])
expect(arr).toEqual([1, 2, 3, 4, 5, 6])
})
test('2x nested promise array', async () => {
const arr = await asyncFlatten([
1,
2,
Promise.resolve(3),
Promise.resolve([4, 5, Promise.resolve(6), Promise.resolve([7, 8, 9])]),
])
expect(arr).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9])
})
})
describe('isFileReadable', () => {
test("file doesn't exist", async () => {
expect(isFileReadable('/does_not_exist')).toBe(false)
})
const testFile = require.resolve(
'./utils/isFileReadable/permission-test-file',
)
test('file with normal permission', async () => {
expect(isFileReadable(testFile)).toBe(true)
})
if (process.platform !== 'win32') {
test('file with read-only permission', async () => {
fs.chmodSync(testFile, '400')
expect(isFileReadable(testFile)).toBe(true)
})
test.runIf(process.getuid && process.getuid() !== 0)(
'file without read permission',
async () => {
fs.chmodSync(testFile, '044')
expect(isFileReadable(testFile)).toBe(false)
fs.chmodSync(testFile, '644')
},
)
}
})
describe('processSrcSetSync', () => {
test('prepend base URL to srcset', async () => {
const devBase = '/base/'
expect(
processSrcSetSync(
'./nested/asset.png 1x, ./nested/asset.png 2x',
({ url }) => path.posix.join(devBase, url),
),
).toBe('/base/nested/asset.png 1x, /base/nested/asset.png 2x')
})
})
describe('flattenId', () => {
test('should limit id to 170 characters', () => {
const tenChars = '1234567890'
let id = ''
for (let i = 0; i < 17; i++) {
id += tenChars
}
expect(id).toHaveLength(170)
const result = flattenId(id)
expect(result).toHaveLength(170)
id += tenChars
const result2 = flattenId(id)
expect(result2).toHaveLength(170)
})
})