69 lines
1.7 KiB
Python
69 lines
1.7 KiB
Python
"""Test module for `archey.processes`"""
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import unittest
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from unittest.mock import patch
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from archey.processes import Processes
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from archey.test import CustomAssertions
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# To avoid edge-case issues due to singleton, we automatically reset internal `_instances`.
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# This is done at the class-level.
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@patch.dict(
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"archey.singleton.Singleton._instances",
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clear=True,
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)
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class TestProcesses(unittest.TestCase, CustomAssertions):
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"""
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Test cases for the `Processes` (singleton) class.
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To work around the singleton, we reset the internal `_instances` dictionary.
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This way, `check_output` can be mocked here.
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"""
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@patch(
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"archey.processes.check_output",
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return_value="""\
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COMMAND
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what
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an
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awesome
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processes
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list
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you
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got
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there
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""",
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)
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def test_ps_ok(self, check_output_mock):
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"""Simple test with a plausible `ps` output"""
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# We'll create two `Processes` instances.
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processes_1 = Processes()
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_ = Processes()
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self.assertTupleEqual(
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processes_1.list,
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(
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"what",
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"an",
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"awesome",
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"processes",
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"list",
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"you",
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"got",
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"there",
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),
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)
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self.assertEqual(processes_1.number, 8)
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# The class has been instantiated twice, but `check_output` has been called only once.
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self.assertTrue(check_output_mock.assert_called_once)
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@patch("archey.processes.check_output", side_effect=FileNotFoundError())
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def test_ps_not_available(self, _):
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"""Checks behavior when `ps` is not available"""
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self.assertTupleEmpty(Processes().list)
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if __name__ == "__main__":
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unittest.main()
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