diff --git a/tests/test_outfile.py b/tests/test_outfile.py
new file mode 100644
index 0000000000000000000000000000000000000000..37f5c9722c9a1a6134d1b3ba2c89c10abead6bf4
--- /dev/null
+++ b/tests/test_outfile.py
@@ -0,0 +1,23 @@
+import pathlib
+import tempfile
+
+import pytest
+
+from import2ledger import outfile
+
+@pytest.mark.parametrize('to_path', [
+    lambda s: s,
+    pathlib.Path,
+])
+def test_output_path(to_path):
+    with tempfile.NamedTemporaryFile() as source_file:
+        path_arg = to_path(source_file.name)
+        with outfile.open(path_arg, None) as actual:
+            assert actual.name == source_file.name
+            assert 'a' in actual.mode
+
+def test_fallback():
+    with tempfile.NamedTemporaryFile() as source_file:
+        with outfile.open('-', source_file) as actual:
+            assert actual is source_file
+        assert not source_file.closed