test: new test for input validation, and fix typo in args

src/input/input_validator.py

@@ -22,7 +22,7 @@ def generate_random_md5(length:int=16) -> str:
     """
 
     # Generate a random string
-    random_string = ''.join(random.choices(string.ascii_letters + string.digits, length=16))
+    random_string = ''.join(random.choices(string.ascii_letters + string.digits, k=length))
     # Encode the string and compute its MD5 hash
     md5_hash = hashlib.md5(random_string.encode()).hexdigest()
     return md5_hash

tests/test_input_validator.py

@@ -0,0 +1,21 @@
+import pytest
+from input.input_validator import generate_random_md5
+
+def test_generate_random_md5_length():
+    md5_hash = generate_random_md5(16)
+    assert len(md5_hash) == 32, "MD5 hash length should be 32 characters"
+
+def test_generate_random_md5_uniqueness():
+    md5_hash1 = generate_random_md5(16)
+    md5_hash2 = generate_random_md5(16)
+    assert md5_hash1 != md5_hash2, "MD5 hashes should be unique for different random strings"
+
+def test_generate_random_md5_default_length():
+    md5_hash = generate_random_md5()
+    assert len(md5_hash) == 32, "MD5 hash length should be 32 characters when using default length"
+
+def test_generate_random_md5_different_data_lengths():
+    md5_hash_8 = generate_random_md5(8)
+    md5_hash_32 = generate_random_md5(32)
+    assert len(md5_hash_8) == 32, "MD5 hash length should be 32 characters for 8 character input"
+    assert len(md5_hash_32) == 32, "MD5 hash length should be 32 characters for 32 character input"