def converts_id_values_to_int_or_string_asts():
assert ast_from_value('hello',
GraphQLID) == StringValueNode(value='hello')
assert ast_from_value('VALUE',
GraphQLID) == StringValueNode(value='VALUE')
# Note: EnumValues cannot contain non-identifier characters
assert ast_from_value('VA\nLUE',
GraphQLID) == StringValueNode(value='VA\nLUE')
# Note: IntValues are used when possible.
assert ast_from_value(-1, GraphQLID) == IntValueNode(value='-1')
assert ast_from_value(123, GraphQLID) == IntValueNode(value='123')
assert ast_from_value('123', GraphQLID) == IntValueNode(value='123')
assert ast_from_value('01', GraphQLID) == StringValueNode(value='01')
with raises(TypeError) as exc_info:
assert ast_from_value(False, GraphQLID)
assert str(exc_info.value) == 'ID cannot represent value: False'
assert ast_from_value(None, GraphQLID) == NullValueNode()
assert ast_from_value(INVALID, GraphQLString) is None
def converts_using_serialize_from_a_custom_scalar_type():
pass_through_scalar = GraphQLScalarType(
"PassThroughScalar", serialize=lambda value: value,
)
assert ast_from_value("value", pass_through_scalar) == StringValueNode(
value="value"
)
return_null_scalar = GraphQLScalarType(
"ReturnNullScalar", serialize=lambda value: None,
)
assert ast_from_value("value", return_null_scalar) is None
class SomeClass:
pass
return_custom_class_scalar = GraphQLScalarType(
"ReturnCustomClassScalar", serialize=lambda value: SomeClass(),
)
with raises(TypeError) as exc_info:
ast_from_value("value", return_custom_class_scalar)
msg = str(exc_info.value)
assert msg == "Cannot convert value to AST: <SomeClass instance>."
def converts_list_values_to_list_asts():
assert ast_from_value(
["FOO", "BAR"],
GraphQLList(GraphQLString)) == ListValueNode(values=[
StringValueNode(value="FOO"),
StringValueNode(value="BAR")
])
assert ast_from_value(["HELLO", "GOODBYE"],
GraphQLList(my_enum)) == ListValueNode(values=[
EnumValueNode(value="HELLO"),
EnumValueNode(value="GOODBYE")
])
def list_generator():
yield 1
yield 2
yield 3
assert ast_from_value(
list_generator(),
GraphQLList(GraphQLInt)) == (ListValueNode(values=[
IntValueNode(value="1"),
IntValueNode(value="2"),
IntValueNode(value="3"),
]))
def converts_id_values_to_int_or_string_asts():
assert ast_from_value("hello",
GraphQLID) == StringValueNode(value="hello")
assert ast_from_value("VALUE",
GraphQLID) == StringValueNode(value="VALUE")
# Note: EnumValues cannot contain non-identifier characters
assert ast_from_value("VA\nLUE",
GraphQLID) == StringValueNode(value="VA\nLUE")
# Note: IntValues are used when possible.
assert ast_from_value(-1, GraphQLID) == IntValueNode(value="-1")
assert ast_from_value(123, GraphQLID) == IntValueNode(value="123")
assert ast_from_value("123", GraphQLID) == IntValueNode(value="123")
assert ast_from_value("01", GraphQLID) == StringValueNode(value="01")
with raises(GraphQLError) as exc_info:
assert ast_from_value(False, GraphQLID)
assert str(exc_info.value) == "ID cannot represent value: False"
assert ast_from_value(None, GraphQLID) == NullValueNode()
assert ast_from_value(Undefined, GraphQLString) is None
def converts_string_values_to_enum_asts_if_possible():
assert ast_from_value("HELLO", my_enum) == EnumValueNode(value="HELLO")
assert ast_from_value(complex_value, my_enum) == EnumValueNode(value="COMPLEX")
# Note: case sensitive
assert ast_from_value("hello", my_enum) is None
# Note: not a valid enum value
assert ast_from_value("VALUE", my_enum) is None
def converts_string_values_to_enum_asts_if_possible():
assert ast_from_value('HELLO', my_enum) == EnumValueNode(value='HELLO')
assert ast_from_value(complex_value,
my_enum) == EnumValueNode(value='COMPLEX')
# Note: case sensitive
assert ast_from_value('hello', my_enum) is None
# Note: not a valid enum value
assert ast_from_value('VALUE', my_enum) is None
def converts_float_values_to_float_asts():
# luckily in Python we can discern between float and int
assert ast_from_value(-1, GraphQLFloat) == FloatValueNode(value="-1")
assert ast_from_value(123.0, GraphQLFloat) == FloatValueNode(value="123")
assert ast_from_value(123.5, GraphQLFloat) == FloatValueNode(value="123.5")
assert ast_from_value(1e4, GraphQLFloat) == FloatValueNode(value="10000")
assert ast_from_value(1e40, GraphQLFloat) == FloatValueNode(value="1e+40")
def converts_list_values_to_list_asts():
assert ast_from_value(
["FOO", "BAR"], GraphQLList(GraphQLString)
) == ListValueNode(
values=[StringValueNode(value="FOO"), StringValueNode(value="BAR")]
)
assert ast_from_value(
["HELLO", "GOODBYE"], GraphQLList(my_enum)
) == ListValueNode(
values=[EnumValueNode(value="HELLO"), EnumValueNode(value="GOODBYE")]
)
def converts_list_values_to_list_asts():
assert ast_from_value(
['FOO', 'BAR'],
GraphQLList(GraphQLString)) == ListValueNode(values=[
StringValueNode(value='FOO'),
StringValueNode(value='BAR')
])
assert ast_from_value(['HELLO', 'GOODBYE'],
GraphQLList(my_enum)) == ListValueNode(values=[
EnumValueNode(value='HELLO'),
EnumValueNode(value='GOODBYE')
])
def skips_invalid_list_items():
ast = ast_from_value(["FOO", None, "BAR"],
GraphQLList(GraphQLNonNull(GraphQLString)))
assert ast == ListValueNode(values=[
StringValueNode(value="FOO"),
StringValueNode(value="BAR")
])
def converts_input_objects_with_explicit_nulls():
input_obj = GraphQLInputObjectType(
"MyInputObj",
{"foo": GraphQLInputField(GraphQLFloat), "bar": GraphQLInputField(my_enum)},
)
assert ast_from_value({"foo": None}, input_obj) == ObjectValueNode(
fields=[ObjectFieldNode(name=NameNode(value="foo"), value=NullValueNode())]
)
def converts_input_objects():
assert ast_from_value({
"foo": 3,
"bar": "HELLO"
}, input_obj) == ObjectValueNode(fields=[
ObjectFieldNode(name=NameNode(value="foo"),
value=FloatValueNode(value="3")),
ObjectFieldNode(name=NameNode(value="bar"),
value=EnumValueNode(value="HELLO")),
])
def converts_int_values_to_int_asts():
assert ast_from_value(-1, GraphQLInt) == IntValueNode(value="-1")
assert ast_from_value(123.0, GraphQLInt) == IntValueNode(value="123")
assert ast_from_value(1e4, GraphQLInt) == IntValueNode(value="10000")
# GraphQL spec does not allow coercing non-integer values to Int to
# avoid accidental data loss.
with raises(GraphQLError) as exc_info:
assert ast_from_value(123.5, GraphQLInt)
msg = str(exc_info.value)
assert msg == "Int cannot represent non-integer value: 123.5"
# Note: outside the bounds of 32bit signed int.
with raises(GraphQLError) as exc_info:
assert ast_from_value(1e40, GraphQLInt)
msg = str(exc_info.value)
assert msg == "Int cannot represent non 32-bit signed integer value: 1e+40"
def converts_input_objects_with_explicit_nulls():
input_obj = GraphQLInputObjectType(
'MyInputObj', {
'foo': GraphQLInputField(GraphQLFloat),
'bar': GraphQLInputField(my_enum)
})
assert ast_from_value({
'foo': None
}, input_obj) == ObjectValueNode(fields=[
ObjectFieldNode(name=NameNode(value='foo'), value=NullValueNode())
])
def converts_boolean_values_to_asts():
assert ast_from_value(True, GraphQLBoolean) == BooleanValueNode(value=True)
assert ast_from_value(False, GraphQLBoolean) == BooleanValueNode(value=False)
assert ast_from_value(INVALID, GraphQLBoolean) is None
assert ast_from_value(nan, GraphQLInt) is None
assert ast_from_value(None, GraphQLBoolean) == NullValueNode()
assert ast_from_value(0, GraphQLBoolean) == BooleanValueNode(value=False)
assert ast_from_value(1, GraphQLBoolean) == BooleanValueNode(value=True)
non_null_boolean = GraphQLNonNull(GraphQLBoolean)
assert ast_from_value(0, non_null_boolean) == BooleanValueNode(value=False)
def converts_input_objects():
input_obj = GraphQLInputObjectType(
'MyInputObj', {
'foo': GraphQLInputField(GraphQLFloat),
'bar': GraphQLInputField(my_enum)
})
assert ast_from_value({
'foo': 3,
'bar': 'HELLO'
}, input_obj) == ObjectValueNode(fields=[
ObjectFieldNode(name=NameNode(value='foo'),
value=FloatValueNode(value='3')),
ObjectFieldNode(name=NameNode(value='bar'),
value=EnumValueNode(value='HELLO'))
])
def converts_input_objects():
input_obj = GraphQLInputObjectType(
"MyInputObj",
{"foo": GraphQLInputField(GraphQLFloat), "bar": GraphQLInputField(my_enum)},
)
assert ast_from_value({"foo": 3, "bar": "HELLO"}, input_obj) == ObjectValueNode(
fields=[
ObjectFieldNode(
name=NameNode(value="foo"), value=FloatValueNode(value="3")
),
ObjectFieldNode(
name=NameNode(value="bar"), value=EnumValueNode(value="HELLO")
),
]
)
def converts_string_values_to_string_asts():
assert ast_from_value("hello", GraphQLString) == StringValueNode(value="hello")
assert ast_from_value("VALUE", GraphQLString) == StringValueNode(value="VALUE")
assert ast_from_value("VA\nLUE", GraphQLString) == StringValueNode(
value="VA\nLUE"
)
assert ast_from_value(123, GraphQLString) == StringValueNode(value="123")
assert ast_from_value(False, GraphQLString) == StringValueNode(value="false")
assert ast_from_value(None, GraphQLString) == NullValueNode()
assert ast_from_value(INVALID, GraphQLString) is None
def converts_string_values_to_string_asts():
assert ast_from_value('hello',
GraphQLString) == StringValueNode(value='hello')
assert ast_from_value('VALUE',
GraphQLString) == StringValueNode(value='VALUE')
assert ast_from_value(
'VA\nLUE', GraphQLString) == StringValueNode(value='VA\nLUE')
assert ast_from_value(123,
GraphQLString) == StringValueNode(value='123')
assert ast_from_value(False,
GraphQLString) == StringValueNode(value='false')
assert ast_from_value(None, GraphQLString) == NullValueNode()
assert ast_from_value(INVALID, GraphQLString) is None
def converts_string_values_to_enum_asts_if_possible():
assert ast_from_value("HELLO", my_enum) == EnumValueNode(value="HELLO")
assert ast_from_value(complex_value,
my_enum) == EnumValueNode(value="COMPLEX")
# Note: case sensitive
with raises(GraphQLError) as exc_info:
ast_from_value("hello", my_enum)
assert exc_info.value.message == "Enum 'MyEnum' cannot represent value: 'hello'"
# Note: not a valid enum value
with raises(GraphQLError) as exc_info:
ast_from_value("UNKNOWN_VALUE", my_enum)
assert (exc_info.value.message ==
"Enum 'MyEnum' cannot represent value: 'UNKNOWN_VALUE'")
def converts_input_objects_with_explicit_nulls():
assert ast_from_value({
"foo": None
}, input_obj) == ObjectValueNode(fields=[
ObjectFieldNode(name=NameNode(value="foo"), value=NullValueNode())
])
def converts_list_singletons():
assert ast_from_value(
'FOO', GraphQLList(GraphQLString)) == StringValueNode(value='FOO')
def does_not_convert_non_object_values_as_input_objects():
assert ast_from_value(5, input_obj) is None
def does_not_convert_non_null_values_to_null_value():
non_null_boolean = GraphQLNonNull(GraphQLBoolean)
assert ast_from_value(None, non_null_boolean) is None
