diff --git a/tests/sentier.dev/test_simapro_units.py b/tests/sentier.dev/test_simapro_units.py
index 9a8c793..db33136 100644
--- a/tests/sentier.dev/test_simapro_units.py
+++ b/tests/sentier.dev/test_simapro_units.py
@@ -49,3 +49,38 @@ def test_integration_SPUC():
     ]
     for obj in expected:
         assert obj in result
+
+
+def test_match_internal_simapro_simapro_with_unit_conversion():
+    given = [
+        {
+            "name": "foo",
+            "location": "bar",
+            "database": "a",
+            "code": "b",
+            "unit": "km",
+            "exchanges": [
+                {"name": "foo", "location": "bar", "unit": "m", "amount": 1000.0}
+            ],
+        }
+    ]
+    expected = [
+        {
+            "name": "foo",
+            "location": "bar",
+            "database": "a",
+            "code": "b",
+            "unit": "km",
+            "exchanges": [
+                {
+                    "input": ("a", "b"),
+                    "name": "foo",
+                    "location": "bar",
+                    "unit": "km",
+                    "loc": 1.0,
+                    "amount": 1.0,
+                }
+            ],
+        }
+    ]
+    assert match_internal_simapro_simapro_with_unit_conversion(given) == expected