More unit tests

Copy in a multifile addon for testing, also fix a typo in blenderpack.py

tests/test_blenderpack.py

@@ -22,6 +22,13 @@ class test_blenderpack_make_repo(unittest.TestCase):
         reality = str(blenderpack.extract_blinfo(os.path.join(self.helper_path, 'addons', 'add_curve_extra_objects.zip')))
         self.assertEqual(expectation, reality)
 
+    def test_extract_blinfo_from_dir(self):
+        with open(os.path.join(self.helper_path, 'extra_objects_blinfo.txt'), 'r') as f:
+            expectation = f.read()
+
+        reality = str(blenderpack.extract_blinfo(os.path.join(self.helper_path, 'addons', 'add_curve_extra_objects/')))
+        self.assertEqual(expectation, reality)
+
     # def test_validpath(self):
     #     blenderpack.make_repo(os.path.join('test_helpers', 'addons'))