TST: simple test for merge function

unittests/test_issues.py

@@ -68,3 +68,18 @@ def test_issue_10():
     assert records[0].parents[0].name == "TestRec"
     assert records[0].get_property("float_prop") is not None
     assert float(records[0].get_property("float_prop").value) == 4.0
+
+    
+def test_issue_23():
+    from caosdb.apiutils import merge_entities
+    import caosdb as db
+
+    ent1 = db.Record()
+    ent1.add_property(name="a", value=2)
+
+    ent2 = db.Record()
+    ent2.add_property(name="b", value=4)
+
+    merged = merge_entities(ent1, ent2)
+    assert merged.get_property("a").value == 2
+    assert merged.get_property("b").value == 4