def test_synchronous_executor_doesnt_support_defers():
class Data(object):
def promise(self):
return succeed('i shouldn\'nt work')
def notPromise(self):
return 'i should work'
DataType = GraphQLObjectType(
'DataType', {
'promise': GraphQLField(GraphQLNonNull(GraphQLString)),
'notPromise': GraphQLField(GraphQLString),
})
doc = '''
query Example {
promise
notPromise
}
'''
schema = GraphQLSchema(query=DataType)
executor = Executor([SynchronousExecutionMiddleware()])
result = executor.execute(schema, doc, Data(), operation_name='Example')
assert not isinstance(result, Deferred)
assert result.data is None
formatted_errors = list(map(format_error, result.errors))
assert formatted_errors == [{
'locations': [dict(line=3, column=9)],
'message':
'You cannot return a Deferred from a resolver '
'when using SynchronousExecutionMiddleware'
}]
def test_synchronous_executor_will_synchronously_resolve():
class Data(object):
def promise(self):
return 'I should work'
DataType = GraphQLObjectType('DataType', {
'promise': GraphQLField(GraphQLString),
})
doc = '''
query Example {
promise
}
'''
schema = GraphQLSchema(query=DataType)
executor = Executor([SynchronousExecutionMiddleware()])
result = executor.execute(schema, doc, Data(), operation_name='Example')
assert not isinstance(result, Deferred)
assert result.data == {"promise": 'I should work'}
assert not result.errors
def executor(self):
if not self._executor:
self._executor = Executor([SynchronousExecutionMiddleware()],
map_type=OrderedDict)
return self._executor