diff --git a/tests/core/tests.py b/tests/core/tests.py
new file mode 100644
index 0000000..e96af80
--- /dev/null
+++ b/tests/core/tests.py
@@ -0,0 +1,78 @@
+import os
+import tempfile
+import unittest
+
+from django.conf import settings
+from django.core.files.base import ContentFile
+from django.test import TestCase
+
+from imagekit.lib import Image
+
+from core.models import TestPhoto
+
+
+class IKTest(TestCase):
+    """ Base TestCase class. """
+    def generate_image(self):
+        tmp = tempfile.TemporaryFile()
+        Image.new('RGB', (800, 600)).save(tmp, 'JPEG')
+        tmp.seek(0)
+        return tmp
+
+    def setUp(self):
+        self.p = TestPhoto()
+        img = self.generate_image()
+        self.p.save_image('test.jpeg', ContentFile(img.read()))
+        self.p.save()
+        img.close()
+
+    def test_save_image(self):
+        img = self.generate_image()
+        path = self.p.image.path
+        self.p.save_image('test2.jpeg', ContentFile(img.read()))
+        self.failIf(os.path.isfile(path))
+        path = self.p.image.path
+        img.seek(0)
+        self.p.save_image('test.jpeg', ContentFile(img.read()))
+        self.failIf(os.path.isfile(path))
+        img.close()
+
+    def test_setup(self):
+        self.assertEqual(self.p.image.width, 800)
+        self.assertEqual(self.p.image.height, 600)
+
+    def test_to_width(self):
+        self.assertEqual(self.p.to_width.width, 100)
+        self.assertEqual(self.p.to_width.height, 75)
+
+    def test_to_height(self):
+        self.assertEqual(self.p.to_height.width, 133)
+        self.assertEqual(self.p.to_height.height, 100)
+
+    def test_crop(self):
+        self.assertEqual(self.p.cropped.width, 100)
+        self.assertEqual(self.p.cropped.height, 100)
+
+    def test_url(self):
+        tup = (settings.MEDIA_URL, self.p._ik.cache_dir,
+               'images/test_to_width.jpeg')
+        self.assertEqual(self.p.to_width.url, "%s%s/%s" % tup)
+
+    def tearDown(self):
+        # ImageKit doesn't delete processed files unless you clear the cache.
+        # We also attempt to remove the cache directory as to not clutter up
+        # your filesystem.
+        self.p._clear_cache()
+        try:
+            os.removedirs(os.path.join(settings.MEDIA_ROOT, self.p._ik.cache_dir, 'images'))
+        except OSError:
+            pass
+
+        # As of Django 1.3, FileFields no longer delete the underlying image
+        # when you delete the model. For the sanity of these tests, we have
+        # to do this ourselves.
+        path = self.p.image.path
+        os.remove(os.path.join(settings.MEDIA_ROOT, path))
+        os.removedirs(os.path.join(settings.MEDIA_ROOT, 'images'))
+        self.p.delete()
+        self.failIf(os.path.isfile(path))