1 files changed, 117 insertions, 0 deletions
diff --git a/rest_framework/tests/serializer.py b/rest_framework/tests/serializer.py
new file mode 100644
index 00000000..16de2c66
--- /dev/null
+++ b/rest_framework/tests/serializer.py
@@ -0,0 +1,117 @@
+import datetime
+from django.test import TestCase
+from rest_framework import serializers
+
+
+class Comment(object):
+    def __init__(self, email, content, created):
+        self.email = email
+        self.content = content
+        self.created = created or datetime.datetime.now()
+
+    def __eq__(self, other):
+        return all([getattr(self, attr) == getattr(other, attr)
+                    for attr in ('email', 'content', 'created')])
+
+
+class CommentSerializer(serializers.Serializer):
+    email = serializers.EmailField()
+    content = serializers.CharField(max_length=1000)
+    created = serializers.DateTimeField()
+
+    def restore_object(self, data, instance=None):
+        if instance is None:
+            return Comment(**data)
+        for key, val in data.items():
+            setattr(instance, key, val)
+        return instance
+
+
+class BasicTests(TestCase):
+    def setUp(self):
+        self.comment = Comment(
+            'tom@example.com',
+            'Happy new year!',
+            datetime.datetime(2012, 1, 1)
+        )
+        self.data = {
+            'email': 'tom@example.com',
+            'content': 'Happy new year!',
+            'created': datetime.datetime(2012, 1, 1)
+        }
+
+    def test_empty(self):
+        serializer = CommentSerializer()
+        expected = {
+            'email': '',
+            'content': '',
+            'created': None
+        }
+        self.assertEquals(serializer.data, expected)
+
+    def test_serialization(self):
+        serializer = CommentSerializer(instance=self.comment)
+        expected = self.data
+        self.assertEquals(serializer.data, expected)
+
+    def test_deserialization_for_create(self):
+        serializer = CommentSerializer(self.data)
+        expected = self.comment
+        self.assertEquals(serializer.is_valid(), True)
+        self.assertEquals(serializer.object, expected)
+        self.assertFalse(serializer.object is expected)
+
+    def test_deserialization_for_update(self):
+        serializer = CommentSerializer(self.data, instance=self.comment)
+        expected = self.comment
+        self.assertEquals(serializer.is_valid(), True)
+        self.assertEquals(serializer.object, expected)
+        self.assertTrue(serializer.object is expected)
+
+
+class ValidationTests(TestCase):
+    def setUp(self):
+        self.comment = Comment(
+            'tom@example.com',
+            'Happy new year!',
+            datetime.datetime(2012, 1, 1)
+        )
+        self.data = {
+            'email': 'tom@example.com',
+            'content': 'x' * 1001,
+            'created': datetime.datetime(2012, 1, 1)
+        }
+
+    def test_deserialization_for_create(self):
+        serializer = CommentSerializer(self.data)
+        self.assertEquals(serializer.is_valid(), False)
+        self.assertEquals(serializer.errors, {'content': [u'Ensure this value has at most 1000 characters (it has 1001).']})
+
+    def test_deserialization_for_update(self):
+        serializer = CommentSerializer(self.data, instance=self.comment)
+        self.assertEquals(serializer.is_valid(), False)
+        self.assertEquals(serializer.errors, {'content': [u'Ensure this value has at most 1000 characters (it has 1001).']})
+
+
+class MetadataTests(TestCase):
+    # def setUp(self):
+    #     self.comment = Comment(
+    #         'tomchristie',
+    #         'Happy new year!',
+    #         datetime.datetime(2012, 1, 1)
+    #     )
+    #     self.data = {
+    #         'email': 'tomchristie',
+    #         'content': 'Happy new year!',
+    #         'created': datetime.datetime(2012, 1, 1)
+    #     }
+
+    def test_empty(self):
+        serializer = CommentSerializer()
+        expected = {
+            'email': serializers.CharField,
+            'content': serializers.CharField,
+            'created': serializers.DateTimeField
+        }
+        for field_name, field in expected.items():
+            self.assertTrue(isinstance(serializer.data.fields[field_name], field))