diff --git a/tests/test_pdfforms_extract.py b/tests/test_pdfforms_extract.py
index dbacd48bb2172b6b503ae95fb6c3095bcdea9420..1f6180a6383fdae373b345cbfe74a210d6cfe23f 100644
--- a/tests/test_pdfforms_extract.py
+++ b/tests/test_pdfforms_extract.py
@@ -46,6 +46,15 @@ def test_extract_from_file(fdf_filename, form_key, fields_yaml):
         actual = extractor.extract()
     compare_to_yaml(actual, fields_yaml, fdf_filename, form_key)
 
+@pytest.mark.parametrize('fdf_filename,form_key,fields_yaml', [
+    ('form1_fill.fdf', 'FDF', 'form1_fill.yml'),
+])
+def test_extract_from_file(fdf_filename, form_key, fields_yaml):
+    with testutil.test_path(f'pdfforms/{fdf_filename}').open('rb') as fdf_file:
+        extractor = extractmod.FormExtractor.from_file(fdf_file)
+        actual = extractor.extract()
+    compare_to_yaml(actual, fields_yaml, fdf_filename, form_key)
+
 @pytest.mark.parametrize('fdf_filename,form_key,fields_yaml', [
     ('form1.fdf', 'FDF', 'form1.yml'),
 ])