diff --git a/tests/ontopy_tests/test_reasoner.py b/tests/ontopy_tests/test_reasoner.py
index 136b69507..854202ca3 100755
--- a/tests/ontopy_tests/test_reasoner.py
+++ b/tests/ontopy_tests/test_reasoner.py
@@ -7,33 +7,44 @@
     from ontopy.ontology import Ontology
 
 
-def test_sync_reasoner_hermit() -> None:
+def test_sync_reasoner_hermit(repo_dir: "Path") -> None:
     """Test `ontopy:Ontology.sync_reasoner()` with HermiT."""
     from ontopy import get_ontology
 
-    testonto = get_ontology("../testonto/testonto_for_reasoner.ttl")
-    print(testonto)
+    testonto = get_ontology(
+        repo_dir / "tests" / "testonto" / "testonto_for_reasoner.ttl"
+    ).load()
+    assert testonto.Avocado
+    assert not isinstance(testonto.Avocado, testonto.NaturalDye)
     testonto.sync_reasoner(reasoner="HermiT")
+    assert isinstance(testonto.Avocado, testonto.NaturalDye)
 
 
-def test_sync_reasoner_pellet() -> None:
+def test_sync_reasoner_pellet(repo_dir: "Path") -> None:
     """Test `ontopy:Ontology.sync_reasoner()` with Pellet"""
     from ontopy import get_ontology
 
-    testonto = get_ontology("../testonto/testonto_for_reasoner.ttl")
-    print(testonto)
+    testonto = get_ontology(
+        repo_dir / "tests" / "testonto" / "testonto_for_reasoner.ttl"
+    ).load()
 
+    assert testonto.Avocado
+    assert not isinstance(testonto.Avocado, testonto.NaturalDye)
     testonto.sync_reasoner(reasoner="Pellet")
+    assert isinstance(testonto.Avocado, testonto.NaturalDye)
 
 
-def test_sync_reasoner_fact() -> None:
+def test_sync_reasoner_fact(repo_dir: "Path") -> None:
     """Test `ontopy:Ontology.sync_reasoner()` with FaCT++"""
     from ontopy import get_ontology
 
-    testonto = get_ontology("../testonto/testonto_for_reasoner.ttl")
-    print(testonto)
-
+    testonto = get_ontology(
+        repo_dir / "tests" / "testonto" / "testonto_for_reasoner.ttl"
+    ).load()
+    assert testonto.Avocado
+    assert not isinstance(testonto.Avocado, testonto.NaturalDye)
     testonto.sync_reasoner(reasoner="FaCT++")
+    assert isinstance(testonto.Avocado, testonto.NaturalDye)
 
 
 def test_sync_reasoner_wrong(testonto: "Ontology") -> None: