fix: resolve CI/CD issues - remove unused imports and fix type mismatches

tests/integration/test_full_workflow.py

@@ -1,4 +1,3 @@
-import pytest
 import tempfile
 import json
 from pathlib import Path
@@ -27,7 +26,7 @@ class Greeter:
     def greet(self, name):
         if self.prefix and name:
             return f"{self.prefix} {name}"
-        return "Hello
+        return "Hello"
 """)
 
             parser = PythonParser()
@@ -187,7 +186,23 @@ def func_b():
 
             file_nodes = [n for n in nodes if n.node_type.value == "file"]
             func_nodes = [n for n in nodes if n.node_type.value == "function"]
-            class_nodes = [n for n in nodes if n.node_type.value == "class"]
 
             assert len(file_nodes) == 3
             assert len(func_nodes) >= 3
+
+    def test_error_handling_invalid_file(self):
+        parser = PythonParser()
+        result = parser.parse(Path("/nonexistent/file.py"), "")
+
+        assert result.errors is not None
+
+    def test_empty_code_handling(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            test_file = Path(tmpdir) / "empty.py"
+            test_file.write_text("# Just a comment\n")
+
+            parser = PythonParser()
+            content = test_file.read_text()
+            result = parser.parse(test_file, content)
+
+            assert result.language == "python"