def test_field_none_type_raises_error():
s = Schema()
f = Field(None)
f.contribute_to_class(ot, 'field_name')
with raises(Exception) as excinfo:
f.internal_field(s)
assert str(excinfo.value) == "Internal type for field ObjectType.field_name is None"
def test_field_type():
f = Field(GraphQLString)
f.contribute_to_class(ot, 'field_name')
assert isinstance(f.internal_field(schema), GraphQLField)
assert f.internal_type(schema) == GraphQLString
def test_field_no_contributed_raises_error():
f = Field(GraphQLString)
with raises(Exception) as excinfo:
f.internal_field(schema)
