diff --git a/fgdb_to_gpkg/fgdb_to_gpkg.py b/fgdb_to_gpkg/fgdb_to_gpkg.py
index dc2a901..4e20eac 100644
--- a/fgdb_to_gpkg/fgdb_to_gpkg.py
+++ b/fgdb_to_gpkg/fgdb_to_gpkg.py
@@ -119,6 +119,7 @@ def fgdb_to_gpkg(
 
     except Exception as e:
         print(f"Error converting {fgdb_path} to {gpkg_path}: {e}")
+        raise
 
 
 if __name__ == "__main__":
diff --git a/poetry.lock b/poetry.lock
index 3b8629d..e2fed82 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -488,6 +488,23 @@ pytest = ">=4.6"
 [package.extras]
 testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtualenv"]
 
+[[package]]
+name = "pytest-mock"
+version = "3.12.0"
+description = "Thin-wrapper around the mock package for easier use with pytest"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pytest-mock-3.12.0.tar.gz", hash = "sha256:31a40f038c22cad32287bb43932054451ff5583ff094bca6f675df2f8bc1a6e9"},
+    {file = "pytest_mock-3.12.0-py3-none-any.whl", hash = "sha256:0972719a7263072da3a21c7f4773069bcc7486027d7e8e1f81d98a47e701bc4f"},
+]
+
+[package.dependencies]
+pytest = ">=5.0"
+
+[package.extras]
+dev = ["pre-commit", "pytest-asyncio", "tox"]
+
 [[package]]
 name = "python-dateutil"
 version = "2.8.2"
@@ -642,4 +659,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "7134138b2fa2607cc60012879345ad1d6dec65a8011ca6720f7915ccd8d90341"
+content-hash = "3b05408efe77593dcd8ceb886fa2911a10b57af8dc099b7c2b249578833204d2"
diff --git a/pyproject.toml b/pyproject.toml
index cc4b4aa..44ce74b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@ numpy = "^1.26.0"
 [tool.poetry.group.dev.dependencies]
 pytest = "^7.2.2"
 pytest-cov = "^4.0.0"
+pytest-mock = "^3.12.0"
 
 [build-system]
 requires = ["poetry-core"]
diff --git a/tests/test_fgdb_to_gpkg.py b/tests/test_fgdb_to_gpkg.py
index eb2eb01..dcdca91 100644
--- a/tests/test_fgdb_to_gpkg.py
+++ b/tests/test_fgdb_to_gpkg.py
@@ -120,3 +120,9 @@ def test_layer_already_exists(setup_fgdb_gpkg: tuple[str, str, Literal["test_fc"
     # This should raise a warning because the layers already exists
     with pytest.warns(UserWarning) as record:
         fgdb_to_gpkg(fgdb_path, gpkg_path, overwrite=False)
+
+
+def test_fgdb_to_gpkg_missing_inputs():
+    # Test that a type error is raised when no positional arguments are passed
+    with pytest.raises(TypeError):
+        fgdb_to_gpkg()