"""Step Functions module unit tests."""

from unittest.mock import patch

import step_functions


@patch('step_functions.client')
def test_start_execution(boto3_client_mock):
    """Test start_execution function."""
    test_execution_input = 'test_input'
    test_execution_name = 'test_name'
    test_state_machine_arn = 'test_arn'
    step_functions.start_execution(
        test_execution_input, test_execution_name, test_state_machine_arn)
    boto3_client_mock.start_execution.assert_called_once_with(
        input=test_execution_input,
        name=test_execution_name,
        stateMachineArn=test_state_machine_arn
    )