diff --git a/tests/test_books_loader.py b/tests/test_books_loader.py
index c79c7fb71d7dfe8ebaea91a7414ac87c28e8d638..081272d5bc32e95256a02623d02de1536cb3b8aa 100644
--- a/tests/test_books_loader.py
+++ b/tests/test_books_loader.py
@@ -107,3 +107,17 @@ def test_load_all_from_date(conservancy_loader, from_date):
     actual_years = txn_years(entries)
     assert actual_years.issuperset(range(from_year, 2021))
     assert min(actual_years) == from_year
+
+def test_load_none_full_args():
+    entries, errors, options_map = books.Loader.load_none('test.cfg', 42)
+    assert not entries
+    assert errors
+    assert all(err.source['filename'] == 'test.cfg' for err in errors)
+    assert all(err.source['lineno'] == 42 for err in errors)
+
+def test_load_none_no_args():
+    entries, errors, options_map = books.Loader.load_none()
+    assert not entries
+    assert errors
+    assert all(isinstance(err.source['filename'], str) for err in errors)
+    assert all(isinstance(err.source['lineno'], int) for err in errors)