TST: added test that bidirectional reference was inserted correctly

integrationtests/test_issues.py

@@ -383,6 +383,14 @@ Block:
     crawler = Crawler(identifiableAdapter=ident)
     crawler.synchronize(crawled_data=records)
 
+    exp_res = db.execute_query("FIND Experiment")
+    assert len(exp_res) == 1
+    exp_block = db.execute_query("FIND Block")
+    assert len(exp_block) == 1
+
+    assert exp_res[0].get_property("Block").value == exp_block[0].id
+    assert exp_block[0].get_property("Experiment").value == exp_res[0].id
+
 
 def test_issue_14(clear_database):
     """