added simple test for sanity check

Author: rxmox

shatter-backend/src/utils/test_password.ts

@@ -0,0 +1,31 @@
+import { hashPassword, comparePassword } from './password_hash';
+
+async function testPasswordHashing() {
+  console.log('🧪 Testing Password Hashing...\n');
+
+  // Test 1: Hash a password
+  const plainPassword = 'mySecretPassword123';
+  console.log('Original password:', plainPassword);
+  
+  const hashedPassword = await hashPassword(plainPassword);
+  console.log('Hashed password:', hashedPassword);
+  console.log('Hash length:', hashedPassword.length, 'characters\n');
+
+  // Test 2: Verify correct password
+  const isCorrect = await comparePassword(plainPassword, hashedPassword);
+  console.log('Testing correct password:', isCorrect ? 'PASS' : 'FAIL');
+
+  // Test 3: Verify wrong password
+  const isWrong = await comparePassword('wrongPassword', hashedPassword);
+  console.log('Testing wrong password:', !isWrong ? 'PASS' : 'FAIL');
+
+  // Test 4: Same password hashes differently each time (salt!)
+  const hash1 = await hashPassword(plainPassword);
+  const hash2 = await hashPassword(plainPassword);
+  console.log('\nSame password, different hashes (proves salt works):');
+  console.log('Hash 1:', hash1);
+  console.log('Hash 2:', hash2);
+  console.log('Are they different?', hash1 !== hash2 ? 'YES' : 'NO');
+}
+
+testPasswordHashing();