Update test_factorial.py

Author: khushipy

recursion/tests/test_factorial.py

@@ -1,18 +1,15 @@
-import unittest
-from recursion.factorial import factorial
+import pytest
 
+from recursion.factorial import factorial
 
-class TestFactorial(unittest.TestCase):
-    def test_factorial_valid_inputs(self):
-        self.assertEqual(factorial(0), 1)
-        self.assertEqual(factorial(1), 1)
-        self.assertEqual(factorial(5), 120)
-        self.assertEqual(factorial(10), 3628800)
 
-    def test_factorial_invalid_input(self):
-        with self.assertRaises(ValueError):
-            factorial(-1)
+def test_factorial_valid_inputs() -> None:
+    assert factorial(0) == 1
+    assert factorial(1) == 1
+    assert factorial(5) == 120
+    assert factorial(10) == 3628800
 
 
-if __name__ == "__main__":
-    unittest.main()
+def test_factorial_invalid_input() -> None:
+    with pytest.raises(ValueError):
+        factorial(-1)