test files in cli and cross with password

test/files.ts

@@ -0,0 +1,25 @@
+import { createHash } from 'crypto'
+import { cp as cpFN, rm as rmFN } from 'fs'
+import { readFile } from 'fs/promises'
+import { promisify } from 'util'
+
+export const cp = promisify(cpFN)
+export const rm = promisify(rmFN)
+
+export const Files = {
+  PDF: 'test/assets/AES.pdf',
+  Image: 'test/assets/image.jpg',
+  Zip: 'test/assets/Pigeons.zip',
+}
+
+export async function getFileChecksum(file: string) {
+  const buffer = await readFile(file)
+  const hash = createHash('sha3-256').update(buffer).digest('hex')
+  return hash
+}
+
+export async function tmpFile(file: string) {
+  const name = `./tmp/${Math.random().toString(36).substring(7)}`
+  await cp(file, name)
+  return name
+}