import six import pytest from escpos import printer from escpos.constants import BUZZER def test_buzzer_function_with_default_params(): instance = printer.Dummy() instance.buzzer() expected = BUZZER + six.int2byte(2) + six.int2byte(4) assert instance.output == expected @pytest.mark.parametrize( "times, duration", [ [1, 1], [2, 2], [3, 3], [4, 4], [5, 5], [6, 6], [7, 7], [8, 8], [9, 9], ], ) def test_buzzer_function(times, duration): instance = printer.Dummy() instance.buzzer(times, duration) expected = BUZZER + six.int2byte(times) + six.int2byte(duration) assert instance.output == expected @pytest.mark.parametrize( "times, duration, expected_message", [ [0, 0, "times must be between 1 and 9"], [-1, 0, "times must be between 1 and 9"], [10, 0, "times must be between 1 and 9"], [11, 0, "times must be between 1 and 9"], [3, 0, "duration must be between 1 and 9"], [3, -1, "duration must be between 1 and 9"], [3, 10, "duration must be between 1 and 9"], [3, 11, "duration must be between 1 and 9"], ], ) def test_buzzer_fuction_with_outrange_values(times, duration, expected_message): instance = printer.Dummy() with pytest.raises(ValueError) as e: instance.buzzer(times, duration) assert str(e.value) == expected_message