c10242c09d
- Add `buzzer(time, duration)` function to control the buzzer on supported printers. - Add unit tests for buzzer function.
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
import six
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import pytest
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from escpos import printer
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from escpos.constants import BUZZER
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def test_buzzer_function_with_default_params():
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instance = printer.Dummy()
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instance.buzzer()
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expected = BUZZER + six.int2byte(2) + six.int2byte(4)
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assert instance.output == expected
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@pytest.mark.parametrize(
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"times, duration",
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[
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[1, 1], [2, 2], [3, 3], [4, 4], [5, 5], [6, 6], [7, 7], [8, 8], [9, 9],
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]
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)
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def test_buzzer_function(times, duration):
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instance = printer.Dummy()
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instance.buzzer(times, duration)
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expected = BUZZER + six.int2byte(times) + six.int2byte(duration)
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assert instance.output == expected
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@pytest.mark.parametrize(
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"times, duration, expected_message",
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[
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[0, 0, "times must be between 1 and 9"],
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[-1, 0, "times must be between 1 and 9"],
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[10, 0, "times must be between 1 and 9"],
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[11, 0, "times must be between 1 and 9"],
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[3, 0, "duration must be between 1 and 9"],
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[3, -1, "duration must be between 1 and 9"],
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[3, 10, "duration must be between 1 and 9"],
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[3, 11, "duration must be between 1 and 9"],
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]
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)
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def test_buzzer_fuction_with_outrange_values(times, duration, expected_message):
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instance = printer.Dummy()
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with pytest.raises(ValueError) as e:
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instance.buzzer(times, duration)
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assert str(e.value) == expected_message
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