self = 
project_id = 'precise-truck-742'
def test_array_of_floats(self, project_id):
    query = """select [1.1, 2.2, 3.3] as a, 4 as b"""
    df = gbq.read_gbq(
        query,
        project_id=project_id,
        credentials=self.credentials,
        dialect="standard",
    )


  tm.assert_frame_equal(df, DataFrame([[[1.1, 2.2, 3.3], 4]], columns=["a", "b"]))


E       AssertionError: Attributes of DataFrame.iloc[:, 1] (column name="b") are different

E

E       Attribute "dtype" are different

E       [left]:  Int64

E       [right]: int64
tests/system/test_gbq.py:911: AssertionError