added a test case to test that file not found error is thrown when tr…

…ying to open file that doesnt exist

exercises-python/template/ex01_basics/main.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 
-def read_ascii_file(param):
+def read_ascii_file(filename):
 	try:
-		f = open(param, 'r')
+		f = open(filename, 'r')
 		return f.read()
-	except FileNotFoundError:
-		print("Oops! That was not a valid file. Try again...")
+	except FileNotFoundError as e:
+		raise FileNotFoundError(f"The file {filename} was not found.")
 
 def main():
 	read_ascii_file("file.txt")

exercises-python/template/ex01_basics/test_wordcount.py

@@ -16,5 +16,13 @@ def test_read_file(self, mock_file):
         self.assertEqual(content, expected_content)
         mock_file.assert_called_once_with(self.filename, 'r')
 
+    @patch('builtins.open', side_effect=FileNotFoundError)
+    def test_read_file_raise_file_found_error(self, mock_file):
+        with self.assertRaises(FileNotFoundError):
+            read_ascii_file(self.filename)
+        mock_file.assert_called_once_with(self.filename, 'r')
+
+
+