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_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_exectuable_definition_node():
assert not is_executable_definition_node(Node())
assert not is_executable_definition_node(DocumentNode())
assert not is_executable_definition_node(DefinitionNode())
assert is_executable_definition_node(ExecutableDefinitionNode())
assert not is_executable_definition_node(TypeSystemDefinitionNode())