TST(data-model-parser): replaced static xml tests by more specific ones

unittests/test_yaml_model_parser.py

@@ -612,14 +612,13 @@ RT2:
   obligatory_properties: *RT1_oblig
     """
     model = parse_model_from_string(model_string)
-    assert str(model) == """{'foo': <Property name="foo" datatype="INTEGER"/>
-, 'RT1': <RecordType name="RT1">
-  <Property name="foo" importance="OBLIGATORY" flag="inheritance:FIX"/>
-</RecordType>
-, 'RT2': <RecordType name="RT2">
-  <Property name="foo" importance="OBLIGATORY" flag="inheritance:FIX"/>
-</RecordType>
-}"""
+
+    assert len(model) == 3
+    assert isinstance(model["foo"], db.Property)
+    assert model["foo"].datatype == db.INTEGER
+    for st in ("RT1", "RT2"):
+        assert isinstance(model[st], db.RecordType)
+        assert model[st].get_property("foo").datatype == db.INTEGER
 
     # Aliasing with override
     model_string = """
@@ -634,16 +633,13 @@ RT2:
     bar:
     """
     model = parse_model_from_string(model_string)
-    assert str(model) == """{'foo': <Property name="foo" datatype="INTEGER"/>
-, 'RT1': <RecordType name="RT1">
-  <Property name="foo" importance="OBLIGATORY" flag="inheritance:FIX"/>
-</RecordType>
-, 'RT2': <RecordType name="RT2">
-  <Property name="foo" importance="OBLIGATORY" flag="inheritance:FIX"/>
-  <Property name="bar" importance="OBLIGATORY" flag="inheritance:FIX"/>
-</RecordType>
-, 'bar': <RecordType name="bar"/>
-}"""
+
+    assert len(model) == 4
+    assert isinstance(model["bar"], db.RecordType)
+    for st in ("RT1", "RT2"):
+        assert isinstance(model[st], db.RecordType)
+        assert model[st].get_property("foo").datatype == db.INTEGER
+    assert model["RT2"].get_property("bar").datatype == "bar"
 
 
 def test_comparison_yaml_model(capfd):