Fix for removal of .gitignore on running tests

tests/test_gitignore_parser.py

@@ -1,22 +1,34 @@
 import unittest
 from lib.gitignore_parser import parse_gitignore, is_ignored
 import os
+import tempfile
 
-class TestGitignoreParser(unittest.TestCase):
 
+class TestGitignoreParser(unittest.TestCase):
     def test_parse_gitignore(self):
-        with open(".gitignore", "w") as f:
-            f.write("__pycache__\nvenv")
-        ignore_patterns = parse_gitignore(".gitignore", ["additional_pattern"])
-        self.assertIn("__pycache__", ignore_patterns)
-        self.assertIn("venv", ignore_patterns)
-        self.assertIn("additional_pattern", ignore_patterns)
-        os.remove(".gitignore")
+        with tempfile.NamedTemporaryFile(
+            mode="w+", delete=False
+        ) as temp_gitignore:
+            temp_gitignore.write("__pycache__\nvenv")
+            temp_gitignore_path = temp_gitignore.name
+
+        try:
+            ignore_patterns = parse_gitignore(
+                temp_gitignore_path, ["additional_pattern"]
+            )
+            self.assertIn("__pycache__", ignore_patterns)
+            self.assertIn("venv", ignore_patterns)
+            self.assertIn("additional_pattern", ignore_patterns)
+        finally:
+            os.unlink(temp_gitignore_path)
 
     def test_is_ignored(self):
         ignore_patterns = {"__pycache__", "venv"}
-        self.assertTrue(is_ignored("test/__pycache__/file.py", ignore_patterns))
+        self.assertTrue(
+            is_ignored("test/__pycache__/file.py", ignore_patterns)
+        )
         self.assertFalse(is_ignored("test/file.py", ignore_patterns))
 
-if __name__ == '__main__':
-    unittest.main()
+
+if __name__ == "__main__":
+    unittest.main()