From dc83813fd503da4e89888245c0361a6e75945de7 Mon Sep 17 00:00:00 2001
From: Markus Tacker <m@coderbyheart.com>
Date: Wed, 31 Jul 2024 17:24:37 +0200
Subject: [PATCH] feat: export hashFile

---
 src/hasFile.spec.ts | 15 +++++++++++++++
 src/hashFile.ts     | 18 ++++++++++++++++++
 src/hashFolder.ts   | 19 ++-----------------
 3 files changed, 35 insertions(+), 17 deletions(-)
 create mode 100644 src/hasFile.spec.ts
 create mode 100644 src/hashFile.ts

diff --git a/src/hasFile.spec.ts b/src/hasFile.spec.ts
new file mode 100644
index 0000000..443b51b
--- /dev/null
+++ b/src/hasFile.spec.ts
@@ -0,0 +1,15 @@
+import { describe, it } from 'node:test'
+import assert from 'node:assert/strict'
+import path from 'node:path'
+import { hashFile } from './hashFile.js'
+import { fileURLToPath } from 'node:url'
+const __dirname = fileURLToPath(new URL('.', import.meta.url))
+
+void describe('hashFile', () => {
+	void it('should calculate correct MD5 hash value for a file', async () => {
+		const filePath = path.join(__dirname, 'test-folder', 'test.txt')
+		const expectedMd5 = '35fd70b6138a64d64c376a6549d6bf57'
+		const actualMd5 = await hashFile(filePath)
+		assert.equal(actualMd5, expectedMd5)
+	})
+})
diff --git a/src/hashFile.ts b/src/hashFile.ts
new file mode 100644
index 0000000..c57a130
--- /dev/null
+++ b/src/hashFile.ts
@@ -0,0 +1,18 @@
+import { createHash } from 'crypto'
+import { createReadStream } from 'fs'
+
+export const hashFile = async (file: string): Promise<string> => {
+	const hash = createHash('md5')
+	const content = createReadStream(file)
+
+	return new Promise((resolve, reject) => {
+		content.pipe(hash)
+		content
+			.on('close', () => {
+				return resolve(hash.digest('hex'))
+			})
+			.on('error', (error) => {
+				return reject(error)
+			})
+	})
+}
diff --git a/src/hashFolder.ts b/src/hashFolder.ts
index fc9b0d8..73bd6e6 100644
--- a/src/hashFolder.ts
+++ b/src/hashFolder.ts
@@ -1,22 +1,7 @@
 import { createHash } from 'node:crypto'
-import { createReadStream, readdirSync, statSync } from 'node:fs'
+import { readdirSync, statSync } from 'node:fs'
 import { join } from 'node:path'
-
-const hashFile = async (file: string): Promise<string> => {
-	const hash = createHash('md5')
-	const content = createReadStream(file)
-
-	return new Promise((resolve, reject) => {
-		content.pipe(hash)
-		content
-			.on('close', () => {
-				return resolve(hash.digest('hex'))
-			})
-			.on('error', (error) => {
-				return reject(error)
-			})
-	})
-}
+import { hashFile } from './hashFile.js'
 
 const generateMd5ForFolder = async (
 	path: string,