Remove unneded import - test fail() catches current exception

Author: jhgg

graphql/core/execution/executor.py

@@ -1,7 +1,7 @@
 import collections
 import functools
 
-from ..defer import Deferred, DeferredDict, DeferredList, defer, fail, succeed
+from ..defer import Deferred, DeferredDict, DeferredList, defer, succeed
 from ..error import GraphQLError, format_error
 from ..language import ast
 from ..language.parser import parse

tests/core_execution/test_deferred.py

@@ -17,6 +17,17 @@ def test_fail_none():
     assert not d.callbacks
 
 
+def test_fail_none_catches_exception():
+    e = Exception('will be raised')
+    try:
+        raise e
+    except:
+        d = fail()
+        assert d.called
+        assert isinstance(d.result, DeferredException)
+        assert d.result.value == e
+
+
 def test_fail():
     e = Exception('failed')
     d = fail(e)