Support relative paths

Author: jpic

dbdiff/tests/test_utils.py

@@ -1,7 +1,16 @@
-from dbdiff.utils import get_model_names
+import os
+
+from dbdiff.utils import get_absolute_path, get_model_names
 
 from django.contrib.auth.models import Group
 
 
 def test_get_model_names():
     assert get_model_names([Group, 'auth.user']) == ['auth.group', 'auth.user']
+
+
+def test_get_absolute_path_starting_with_dot():
+    assert get_absolute_path('./foo') == os.path.join(
+        os.path.abspath(os.path.dirname('__file__')),
+        'foo',
+    )

dbdiff/utils.py

@@ -83,7 +83,10 @@ def get_absolute_path(path):
     if path.startswith('/'):
         return path
 
-    module_path = imp.find_module(path.split('/')[0])[1]
+    if path.startswith('.'):
+        module_path = '.'
+    else:
+        module_path = imp.find_module(path.split('/')[0])[1]
     return os.path.abspath(os.path.join(
         module_path,
         *path.split('/')[1:]