Add validation for fields & exclude type.

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/test_serializer_metaclass.py b/tests/test_serializer_metaclass.py
new file mode 100644
index 00000000..bd2fbed7
--- /dev/null
+++ b/tests/test_serializer_metaclass.py
@@ -0,0 +1,62 @@
+from django.test import TestCase
+from rest_framework import serializers
+from .models import BasicModel
+
+
+class TestSerializerMetaClass(TestCase):
+    def setUp(self):
+        class FieldsSerializer(serializers.ModelSerializer):
+            text = serializers.CharField()
+
+            class Meta:
+                model = BasicModel
+                fields = ('text')
+
+        class ExcludeSerializer(serializers.ModelSerializer):
+            text = serializers.CharField()
+
+            class Meta:
+                model = BasicModel
+                exclude = ('text')
+
+        class FieldsAndExcludeSerializer(serializers.ModelSerializer):
+            text = serializers.CharField()
+
+            class Meta:
+                model = BasicModel
+                fields = ('text',)
+                exclude = ('text',)
+
+        self.fields_serializer = FieldsSerializer
+        self.exclude_serializer = ExcludeSerializer
+        self.faeSerializer = FieldsAndExcludeSerializer
+
+    def test_meta_class_fields(self):
+        object = BasicModel(text="Hello World.")
+        serializer = self.fields_serializer(instance=object)
+
+        with self.assertRaises(TypeError) as result:
+            serializer.data
+
+        exception = result.exception
+        self.assertEqual(str(exception), "`fields` must be a list or tuple")
+
+    def test_meta_class_exclude(self):
+        object = BasicModel(text="Hello World.")
+        serializer = self.exclude_serializer(instance=object)
+
+        with self.assertRaises(TypeError) as result:
+            serializer.data
+
+        exception = result.exception
+        self.assertEqual(str(exception), "`exclude` must be a list or tuple")
+
+    def test_meta_class_fields_and_exclude(self):
+        object = BasicModel(text="Hello World.")
+        serializer = self.faeSerializer(instance=object)
+
+        with self.assertRaises(AssertionError) as result:
+            serializer.data
+
+        exception = result.exception
+        self.assertEqual(str(exception), "Cannot set both 'fields' and 'exclude'.")