def check_value_node():
assert not is_value_node(Node())
assert not is_value_node(DocumentNode())
assert is_value_node(ValueNode())
assert is_value_node(IntValueNode())
assert is_value_node(ObjectValueNode())
assert not is_value_node(TypeNode())
def check_type_extension_node():
assert not is_type_extension_node(Node())
assert not is_type_extension_node(DocumentNode())
assert is_type_extension_node(TypeExtensionNode())
assert not is_type_extension_node(ScalarTypeDefinitionNode())
assert is_type_extension_node(ScalarTypeExtensionNode())
assert not is_type_extension_node(DefinitionNode())
assert not is_type_extension_node(TypeNode())
def check_type_system_extension_node():
assert not is_type_system_extension_node(Node())
assert not is_type_system_extension_node(DocumentNode())
assert is_type_system_extension_node(SchemaExtensionNode())
assert is_type_system_extension_node(TypeExtensionNode())
assert not is_type_system_extension_node(TypeSystemDefinitionNode())
assert not is_type_system_extension_node(DefinitionNode())
assert not is_type_system_extension_node(TypeNode())
def check_type_definition_node():
assert not is_type_definition_node(Node())
assert not is_type_definition_node(DocumentNode())
assert is_type_definition_node(TypeDefinitionNode())
assert is_type_definition_node(ScalarTypeDefinitionNode())
assert not is_type_definition_node(TypeSystemDefinitionNode())
assert not is_type_definition_node(DefinitionNode())
assert not is_type_definition_node(TypeNode())
def check_type_node():
assert not is_type_node(Node())
assert not is_type_node(DocumentNode())
assert not is_type_node(ValueNode())
assert is_type_node(TypeNode())
assert is_type_node(NonNullTypeNode())
def for_unspecified_type_node():
node = TypeNode()
with raises(TypeError) as exc_info:
type_from_ast(test_schema, node)
msg = str(exc_info.value)
assert msg == "Unexpected type node: <TypeNode instance>."