diff --git a/.gitignore b/.gitignore
index 0c0b1d1..22c0b0b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,5 @@ __pycache__
 *.iml
 
 .coverage
-.python-version
\ No newline at end of file
+.python-version
+coverage.xml
\ No newline at end of file
diff --git a/src/pydantic_avro/from_avro/class_registery.py b/src/pydantic_avro/from_avro/class_registery.py
index 9968550..adf2204 100644
--- a/src/pydantic_avro/from_avro/class_registery.py
+++ b/src/pydantic_avro/from_avro/class_registery.py
@@ -15,12 +15,6 @@ def add_class(self, name: str, class_def: str):
         """Add a class to the registry."""
         self._classes[name] = class_def
 
-    def get_class(self, name: str) -> str:
-        """Get a class from the registry."""
-        if name not in self._classes:
-            raise KeyError(f"Class {name} not found in registry")
-        return self._classes[name]
-
     @property
     def classes(self) -> dict:
         """Get all classes in the registry."""
diff --git a/src/pydantic_avro/from_avro/type_handlers.py b/src/pydantic_avro/from_avro/type_handlers.py
deleted file mode 100644
index e69de29..0000000
diff --git a/src/pydantic_avro/from_avro/types.py b/src/pydantic_avro/from_avro/types.py
index acc984f..52d6dd0 100644
--- a/src/pydantic_avro/from_avro/types.py
+++ b/src/pydantic_avro/from_avro/types.py
@@ -39,10 +39,8 @@ def list_type_handler(t: dict) -> str:
 
 def map_type_handler(t: dict) -> str:
     """Get the Python type of a given Avro map type"""
-    if isinstance(t["type"], dict):
-        avro_value_type = t["type"].get("values")
-    else:
-        avro_value_type = t.get("values")
+
+    avro_value_type = t["type"].get("values")
 
     if avro_value_type is None:
         raise AttributeError("Values are required for map type")
@@ -53,9 +51,7 @@ def map_type_handler(t: dict) -> str:
 
 def logical_type_handler(t: dict) -> str:
     """Get the Python type of a given Avro logical type"""
-    if isinstance(t["type"], dict):
-        return LOGICAL_TYPES[t["type"]["logicalType"]]
-    return LOGICAL_TYPES[t["logicalType"]]
+    return LOGICAL_TYPES[t["type"]["logicalType"]]
 
 
 def enum_type_handler(t: dict) -> str:
diff --git a/tests/test_from_avro.py b/tests/test_from_avro.py
index 72e581b..d2626c3 100644
--- a/tests/test_from_avro.py
+++ b/tests/test_from_avro.py
@@ -66,6 +66,19 @@ def test_avsc_to_pydantic_map():
     assert "class Test(BaseModel):\n" "    col1: Dict[str, str]" in pydantic_code
 
 
+def test_avsc_to_pydantic_map_missing_values():
+    with pytest.raises(AttributeError, match="Values are required for map type"):
+        avsc_to_pydantic(
+            {
+                "name": "Test",
+                "type": "record",
+                "fields": [
+                    {"name": "col1", "type": {"type": "map", "values": None, "default": {}}},
+                ],
+            }
+        )
+
+
 def test_avsc_to_pydantic_map_nested_object():
     pydantic_code = avsc_to_pydantic(
         {
diff --git a/tests/test_main.py b/tests/test_main.py
new file mode 100644
index 0000000..2b04b77
--- /dev/null
+++ b/tests/test_main.py
@@ -0,0 +1,26 @@
+import runpy
+from unittest.mock import MagicMock, patch
+
+from pydantic_avro import __main__ as main_module
+
+
+@patch("pydantic_avro.__main__.convert_file")
+def test_main_avro_to_pydantic(mock_convert_file):
+    # Call the main function with test arguments
+    test_args = ["avro_to_pydantic", "--asvc", "test.avsc", "--output", "output.py"]
+    main_module.main(test_args)
+
+    # Assert that convert_file was called with the correct arguments
+    mock_convert_file.assert_called_once_with("test.avsc", "output.py")
+
+
+@patch.object(main_module, "main")
+@patch.object(
+    main_module.sys, "argv", ["__main__.py", "avro_to_pydantic", "--asvc", "test.avsc", "--output", "output.py"]
+)
+def test_root_main(mock_main):
+    # Call the root_main function
+    main_module.root_main()
+
+    # Assert that main was called with the correct arguments
+    mock_main.assert_called_once_with(["avro_to_pydantic", "--asvc", "test.avsc", "--output", "output.py"])