diff --git a/unittests/json-schema-models/datamodel_atomic_properties.schema.json b/unittests/json-schema-models/datamodel_atomic_properties.schema.json
new file mode 100644
index 0000000000000000000000000000000000000000..97a67b1ce5458ebe30ae4c75f218ff2066258bcf
--- /dev/null
+++ b/unittests/json-schema-models/datamodel_atomic_properties.schema.json
@@ -0,0 +1,22 @@
+[
+    {
+        "title": "Dataset1",
+        "description": "Some description",
+        "type": "object",
+        "properties": {
+            "title": { "type": "string", "description": "full dataset title" },
+            "campaign": { "type": "string", "description": "FIXME" },
+            "1": { "type": "number", "description": "Some float property" }
+        },
+        "required": [ "title", "1" ]
+    },
+    {
+        "title": "Dataset2",
+        "type": "object",
+        "properties": {
+            "date": { "type": "string", "format": "date-time" },
+            "integer": { "type": "integer", "description": "Some integer property" },
+            "boolean": { "type": "boolean" }
+        }
+    }
+]
diff --git a/unittests/test_json_schema_model_parser.py b/unittests/test_json_schema_model_parser.py
index c8cae46e4d1abcc5dde21ab7e598c1ddde559c58..4cf4c234216b2aaa8faee51cbe17a96c9394a67d 100644
--- a/unittests/test_json_schema_model_parser.py
+++ b/unittests/test_json_schema_model_parser.py
@@ -33,9 +33,11 @@ def test_rt_with_string_properties():
 
     model = parse_model_from_json_schema(
         os.path.join(FILEPATH,
-                     "./datamodel_string_properties.schema.json"))
+                     "datamodel_string_properties.schema.json"))
     assert "Dataset" in model
     dataset_rt = model["Dataset"]
+    assert isinstance(dataset_rt, db.RecordType)
+    assert dataset_rt.name == "Dataset"
     assert dataset_rt.description == ""
     assert len(dataset_rt.get_properties()) == 3
 
@@ -54,3 +56,52 @@ def test_rt_with_string_properties():
     method_prop = dataset_rt.get_property("method")
     assert method_prop.datatype == db.TEXT
     assert dataset_rt.get_importance(method_prop.name) == db.RECOMMENDED
+
+
+def test_datamodel_with_atomic_properties():
+    """Test read-in of two separate record types with atomic-typed properties."""
+    # @author Florian Spreckelsen
+    # @date 2022-02-18
+
+    model = parse_model_from_json_schema(os.path.join(
+        FILEPATH, "datamodel_atomic_properties.schema.json"))
+    assert "Dataset1" in model
+    assert "Dataset2" in model
+
+    rt1 = model["Dataset1"]
+    assert isinstance(rt1, db.RecordType)
+    assert rt.name == "Dataset1"
+    assert rt1.description == "Some description"
+    assert len(rt1.get_properties()) == 3
+
+    assert rt1.get_property("title") is not None
+    assert rt1.get_property("campaign") is not None
+    assert rt1.get_property("1") is not None
+
+    title_prop = rt1.get_property("title")
+    assert title_prop.datatype == db.TEXT
+    assert rt1.get_importance(title_prop.name) == db.OBLIGATORY
+
+    campaign_prop = rt1.get_property("campaign")
+    assert campaign_prop.datatype == db.TEXT
+    assert rt1.get_importance(campaign_prop.name) == db.RECOMMENDED
+
+    float_prop = rt1.get_property("1")
+    assert float_prop.datatype == db.DOUBLE
+    assert rt1.get_importance(float_prop.name) == db.OBLIGATORY
+
+    rt2 = model["Dataset2"]
+    assert isinstance(rt2, db.RecordType)
+    assert rt2.name == "Dataset2"
+    assert not rt2.description
+    assert len(rt2.get_properties()) == 3
+
+    date_prop = rt2.get_property("date")
+    assert date_prop.datatype == db.DATETIME
+
+    int_prop = rt2.get_property("integer")
+    assert int_prop.datatype == db.INTEGER
+    assert int_prop.description == "Some integer property"
+
+    bool_prop = rt2.get_property("boolean")
+    assert bool_prop.datatype == db.BOOLEAN