diff --git a/daguerre/tests/unit/test_management.py b/daguerre/tests/unit/test_management.py
new file mode 100644
index 0000000..a31277b
--- /dev/null
+++ b/daguerre/tests/unit/test_management.py
@@ -0,0 +1,107 @@
+from django.core.files.storage import default_storage
+import mock
+
+from daguerre.management.commands._daguerre_clean import Command as Clean
+from daguerre.models import AdjustedImage, Area
+from daguerre.tests.base import BaseTestCase
+
+
+class CleanTestCase(BaseTestCase):
+    def test_old_adjustments(self):
+        """
+        _old_adjustments should return AdjustedImages whose storage_path
+        no longer exists.
+
+        """
+        nonexistant = 'daguerre/test/nonexistant.png'
+        if default_storage.exists(nonexistant):
+            default_storage.delete(nonexistant)
+
+        adjusted = self.create_image('100x100.png')
+        adjusted1 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=nonexistant,
+                                                 adjusted=adjusted)
+        adjusted2 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=adjusted,
+                                                 adjusted=adjusted)
+        clean = Clean()
+        self.assertEqual(list(clean._old_adjustments()), [adjusted1])
+        default_storage.delete(adjusted)
+
+    def test_old_areas(self):
+        """
+        _old_areas should return Areas whose storage_path no longer exists.
+
+        """
+        nonexistant = 'daguerre/test/nonexistant.png'
+        if default_storage.exists(nonexistant):
+            default_storage.delete(nonexistant)
+
+        storage_path = self.create_image('100x100.png')
+        kwargs = {
+            'x1': 0,
+            'x2': 10,
+            'y1': 0,
+            'y2': 10
+        }
+        area1 = Area.objects.create(storage_path=nonexistant,
+                                    **kwargs)
+        area2 = Area.objects.create(storage_path=storage_path,
+                                    **kwargs)
+        clean = Clean()
+        self.assertEqual(list(clean._old_areas()), [area1])
+        default_storage.delete(storage_path)
+
+    def test_missing_adjustments(self):
+        """
+        _missing_adjustments should return AdjustedImages whose adjusted
+        no longer exists.
+
+        """
+        nonexistant = 'daguerre/test/nonexistant.png'
+        if default_storage.exists(nonexistant):
+            default_storage.delete(nonexistant)
+
+        storage_path = self.create_image('100x100.png')
+        adjusted1 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=storage_path,
+                                                 adjusted=nonexistant)
+        adjusted2 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=storage_path,
+                                                 adjusted=storage_path)
+        clean = Clean()
+        self.assertEqual(list(clean._missing_adjustments()), [adjusted1])
+        default_storage.delete(storage_path)
+
+    def test_duplicate_adjustments(self):
+        path1 = self.create_image('100x100.png')
+        path2 = self.create_image('100x100.png')
+        adjusted1 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=path1,
+                                                 adjusted=path1)
+        adjusted2 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=path1,
+                                                 adjusted=path1)
+        adjusted3 = AdjustedImage.objects.create(requested='fit|50|50',
+                                                 storage_path=path2,
+                                                 adjusted=path1)
+        clean = Clean()
+        duplicates = clean._duplicate_adjustments()
+        self.assertNotIn(adjusted3, duplicates)
+        self.assertTrue(list(duplicates) == [adjusted1] or
+                        list(duplicates) == [adjusted2])
+
+    def test_orphaned_files(self):
+        clean = Clean()
+        walk_ret = (
+            ('daguerre', ['test'], []),
+            ('daguerre/test', [], ['fake1.png', 'fake2.png', 'fake3.png'])
+        )
+        AdjustedImage.objects.create(requested='fit|50|50',
+                                     storage_path='whatever.png',
+                                     adjusted='daguerre/test/fake2.png')
+        with mock.patch.object(clean, '_walk', return_value=walk_ret) as walk:
+            self.assertEqual(clean._orphaned_files(),
+                             ['daguerre/test/fake1.png',
+                              'daguerre/test/fake3.png'])
+            walk.assert_called_once_with('daguerre', topdown=False)
diff --git a/test_project/requirements.txt b/test_project/requirements.txt
index 38d689a..c036b89 100644
--- a/test_project/requirements.txt
+++ b/test_project/requirements.txt
@@ -4,3 +4,4 @@ nose==1.2.1
 blessings==1.5
 django==1.4.5
 south==0.7.6
+mock==1.0.1