#124: added extra tests

Author: jorre127

test/writer/model_reader_test.dart

@@ -66,6 +66,50 @@ TestModel:
       expect(simpleDateTime.type, isA<DateTimeType>());
       expect(simpleDateTime.isRequired, false);
     });
+
+    test('Test required not definable anymore', () {
+      final models = YmlGeneratorConfig(
+              PubspecConfig("name: test"),
+              """
+TestModel:
+  properties:
+    optionalString1:
+        type: String?
+        required: true
+    optionalString2:
+        type: String?
+    requiredString1:
+        type: String
+        required: false
+    requiredString2:
+        type: String
+""",
+              '')
+          .models;
+
+      expect(models.length, 1);
+      final model = models.first;
+      expect(model is ObjectModel, true);
+      model as ObjectModel;
+
+      final optionalString1 = model.fields.getByName("optionalString1");
+      final requiredString1 = model.fields.getByName("requiredString1");
+      final optionalString2 = model.fields.getByName("optionalString2");
+      final requiredString2 = model.fields.getByName("requiredString2");
+
+      expect(optionalString1.type, isA<StringType>());
+      expect(optionalString1.isRequired, false);
+
+      expect(requiredString1.type, isA<StringType>());
+      expect(requiredString1.isRequired, true);
+
+      expect(optionalString2.type, isA<StringType>());
+      expect(optionalString2.isRequired, false);
+
+      expect(requiredString2.type, isA<StringType>());
+      expect(requiredString2.isRequired, true);
+    });
+
     test('Test simple generic fields', () {
       final models = YmlGeneratorConfig(
               PubspecConfig("name: test"),