Syncano · opalczynski · Sep 27, 2016 · Sep 26, 2016 · Sep 27, 2016 · Sep 27, 2016
diff --git a/syncano/models/fields.py b/syncano/models/fields.py
@@ -547,6 +547,8 @@ class FileField(WritableField):
     param_name = 'files'
 
     def to_native(self, value):
+        if isinstance(value, six.string_types):
+            return None
         return {self.name: value}
 
 

diff --git a/tests/integration_test_data_objects.py b/tests/integration_test_data_objects.py
@@ -0,0 +1,146 @@
+# -*- coding: utf-8 -*-
+from hashlib import md5
+
+import requests
+import six
+from syncano.models import Object
+from tests.integration_test import InstanceMixin, IntegrationTest
+
+try:
+    # python2
+    from StringIO import StringIO
+except ImportError:
+    # python3
+    from io import StringIO
+
+
+class DataObjectFileTest(InstanceMixin, IntegrationTest):
+
+    @classmethod
+    def setUpClass(cls):
+        super(DataObjectFileTest, cls).setUpClass()
+
+        cls.schema = [
+            {'name': 'test_field_a', 'type': 'string'},
+            {'name': 'test_field_file', 'type': 'file'},
+        ]
+        cls.class_name = 'test_object_file'
+        cls.initial_field_a = 'some_string'
+        cls.file_path = 'tests/test_files/python-logo.png'
+        cls.instance.classes.create(
+            name=cls.class_name,
+            schema=cls.schema
+        )
+        with open(cls.file_path, 'rb') as f:
+            cls.file_md5 = cls.get_file_md5(f)
+
+    def test_creating_file_object(self):
+        data_object = self._create_object_with_file()
+        self.assertEqual(data_object.test_field_a, self.initial_field_a)
+        self.assert_file_md5(data_object)
+
+    def test_updating_another_field(self):
+        data_object = self._create_object_with_file()
+        file_url = data_object.test_field_file
+
+        # no changes made to the file;
+        update_string = 'some_other_string'
+        data_object.test_field_a = update_string
+        data_object.save()
+
+        self.assertEqual(data_object.test_field_file, file_url)
+        self.assertEqual(data_object.test_field_a, update_string)
+        self.assert_file_md5(data_object)
+
+    def test_updating_file_field(self):
+        data_object = self._create_object_with_file()
+        file_url = data_object.test_field_file
+
+        update_string = 'updating also field a'
+        file_content = 'some example text file'
+        new_file = StringIO(file_content)
+        data_object.test_field_file = new_file
+        data_object.test_field_a = update_string
+        data_object.save()
+
+        self.assertEqual(data_object.test_field_a, update_string)
+        self.assertNotEqual(data_object.test_field_file, file_url)
+
+        # check file content;
+        file_content_s3 = self.get_s3_file(data_object.test_field_file)
+        self.assertEqual(file_content_s3, file_content)
+
+    def test_manager_update(self):
+        data_object = self._create_object_with_file()
+        file_url = data_object.test_field_file
+        # update only string field;
+        update_string = 'manager updating'
+        Object.please.update(
+            id=data_object.id,
+            class_name=self.class_name,
+            test_field_a=update_string
+        )
+
+        data_object = Object.please.get(id=data_object.id, class_name=self.class_name)
+        self.assertEqual(data_object.test_field_a, update_string)
+        # shouldn't change;
+        self.assertEqual(data_object.test_field_file, file_url)
+
+        # update also a file;
+        new_update_string = 'manager with file update'
+        file_content = 'manager file update'
+        new_file = StringIO(file_content)
+        Object.please.update(
+            id=data_object.id,
+            class_name=self.class_name,
+            test_field_a=new_update_string,
+            test_field_file=new_file
+        )
+
+        data_object = Object.please.get(id=data_object.id, class_name=self.class_name)
+        self.assertEqual(data_object.test_field_a, new_update_string)
+        # should change;
+        self.assertNotEqual(data_object.test_field_file, file_url)
+
+        # check file content;
+        file_content_s3 = self.get_s3_file(data_object.test_field_file)
+        self.assertEqual(file_content_s3, file_content)
+
+    def test_manager_create(self):
+        create_string = 'manager create'
+        with open(self.file_path, 'rb') as f:
+            data_object = Object.please.create(
+                class_name=self.class_name,
+                test_field_a=create_string,
+                test_field_file=f
+            )
+
+        self.assertEqual(data_object.test_field_a, create_string)
+        self.assert_file_md5(data_object)
+
+    @classmethod
+    def get_file_md5(cls, file_content):
+        if not isinstance(file_content, (six.string_types, six.binary_type)):
+            file_content = file_content.read()
+        return md5(file_content).hexdigest()
+
+    def assert_file_md5(self, data_object):
+        file_content = requests.get(data_object.test_field_file).content
+        file_md5 = self.get_file_md5(file_content)
+        self.assertEqual(self.file_md5, file_md5)
+
+    @classmethod
+    def get_s3_file(cls, url):
+        file_content_s3 = requests.get(url).content
+        if hasattr(file_content_s3, 'decode'):
+            file_content_s3 = file_content_s3.decode('utf-8')
+        return file_content_s3
+
+    def _create_object_with_file(self):
+        with open('tests/test_files/python-logo.png', 'rb') as f:
+            data_object = Object.please.create(
+                class_name=self.class_name,
+                test_field_a=self.initial_field_a,
+                test_field_file=f,
+            )
+        return data_object
diff --git a/tests/test_files/python-logo.png b/tests/test_files/python-logo.png