1 files changed, 34 insertions, 1 deletions
diff --git a/tests/test_relations.py b/tests/test_relations.py
index 62353dc2..fbe176e2 100644
--- a/tests/test_relations.py
+++ b/tests/test_relations.py
@@ -1,6 +1,8 @@
 from .utils import mock_reverse, fail_reverse, BadType, MockObject, MockQueryset
 from django.core.exceptions import ImproperlyConfigured
+from django.utils.datastructures import MultiValueDict
 from rest_framework import serializers
+from rest_framework.fields import empty
 from rest_framework.test import APISimpleTestCase
 import pytest
 
@@ -33,7 +35,7 @@ class TestPrimaryKeyRelatedField(APISimpleTestCase):
         with pytest.raises(serializers.ValidationError) as excinfo:
             self.field.to_internal_value(4)
         msg = excinfo.value.detail[0]
-        assert msg == "Invalid pk '4' - object does not exist."
+        assert msg == 'Invalid pk "4" - object does not exist.'
 
     def test_pk_related_lookup_invalid_type(self):
         with pytest.raises(serializers.ValidationError) as excinfo:
@@ -134,3 +136,34 @@ class TestSlugRelatedField(APISimpleTestCase):
     def test_representation(self):
         representation = self.field.to_representation(self.instance)
         assert representation == self.instance.name
+
+
+class TestManyRelatedField(APISimpleTestCase):
+    def setUp(self):
+        self.instance = MockObject(pk=1, name='foo')
+        self.field = serializers.StringRelatedField(many=True)
+        self.field.field_name = 'foo'
+
+    def test_get_value_regular_dictionary_full(self):
+        assert 'bar' == self.field.get_value({'foo': 'bar'})
+        assert empty == self.field.get_value({'baz': 'bar'})
+
+    def test_get_value_regular_dictionary_partial(self):
+        setattr(self.field.root, 'partial', True)
+        assert 'bar' == self.field.get_value({'foo': 'bar'})
+        assert empty == self.field.get_value({'baz': 'bar'})
+
+    def test_get_value_multi_dictionary_full(self):
+        mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
+        assert ['bar1', 'bar2'] == self.field.get_value(mvd)
+
+        mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
+        assert [] == self.field.get_value(mvd)
+
+    def test_get_value_multi_dictionary_partial(self):
+        setattr(self.field.root, 'partial', True)
+        mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
+        assert ['bar1', 'bar2'] == self.field.get_value(mvd)
+
+        mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
+        assert empty == self.field.get_value(mvd)