from aws_lambda.helpers import LambdaContext import time import unittest class TestLambdaContext(unittest.TestCase): def test_get_remaining_time_in_millis(self): context = LambdaContext('function_name',2000) time.sleep(.5) self.assertTrue(context.get_remaining_time_in_millis() < 2000) if __name__ == '__main__': unittest.main()