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40 lines
1.7 KiB
Python
40 lines
1.7 KiB
Python
"""The shared install functions are sourced by both post-install flows. An
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update that runs functions of the two sources the file twice in one shell,
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which has to be as quiet as the first time."""
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from pathlib import Path
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import shutil
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import subprocess
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import unittest
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ROOT = Path(__file__).resolve().parents[3]
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SHARED = ROOT / "scripts/global/utils-install-functions.sh"
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@unittest.skipUnless(shutil.which("bash"), "bash is needed")
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class SourcedTwiceTests(unittest.TestCase):
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def source(self, times):
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script = "; ".join([f'source "{SHARED}"'] * times) + '; echo "${PMX_NIC_LINK_DIR}|${#PMX_DKMS_COMPONENTS[@]}"'
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return subprocess.run(["bash", "-c", script], capture_output=True, text=True, check=False)
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def test_a_second_source_prints_nothing(self):
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once, twice = self.source(1), self.source(2)
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self.assertEqual(twice.stderr, once.stderr)
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self.assertNotIn("readonly variable", twice.stderr)
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self.assertEqual(twice.returncode, 0)
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def test_the_values_are_the_same_and_stay_read_only(self):
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self.assertEqual(self.source(2).stdout.strip(), "/etc/systemd/network|2")
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attempt = subprocess.run(["bash", "-c", f'source "{SHARED}"; PMX_NIC_LINK_DIR=/tmp'],
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capture_output=True, text=True, check=False)
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self.assertIn("readonly variable", attempt.stderr)
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def test_no_other_shared_file_declares_a_read_only_variable_unguarded(self):
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for path in sorted((ROOT / "scripts/global").glob("*.sh")) + [ROOT / "scripts/utils.sh"]:
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for line in path.read_text(errors="replace").splitlines():
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self.assertFalse(line.startswith(("readonly ", "declare -r ")), f"{path.name}: {line[:60]}")
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if __name__ == "__main__":
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unittest.main()
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