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80 lines
2.7 KiB
Python
Vendored
80 lines
2.7 KiB
Python
Vendored
"""Run a single test method in this (sub)process and report the result.
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Invoked as ``python -m test.support.subprocess_runner MODULE QUALNAME OUTFILE
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CONFIG`` by :func:`test.support.isolation.runInSubprocess`. CONFIG is the
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marshalled test.support configuration of the parent test run, as a hex string.
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The outcome of the test (including that of each individual subtest) is
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marshalled to OUTFILE. This module is not meant to be imported.
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Import as little as possible before running the test: every module imported
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here is state that the test would not see in a normal test run.
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"""
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import marshal
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import sys
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import unittest
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from unittest.case import _SubTest
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if __name__ != '__main__':
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raise ImportError('this module cannot be directly imported')
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if len(sys.argv) != 5:
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print('usage: python -m test.support.subprocess_runner '
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'MODULE QUALNAME OUTFILE CONFIG', file=sys.stderr)
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sys.exit(2)
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module, qualname, outfile, config = sys.argv[1:]
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# Set up the child before importing the test.
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from test.support.isolation import _apply_child_config
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_apply_child_config(config)
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class _Result(unittest.TestResult):
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# Capture per-test durations keyed by test id, so the parent can report the
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# subprocess timings instead of its own replay time.
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def __init__(self):
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super().__init__()
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self.id_durations = []
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def addDuration(self, test, elapsed):
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super().addDuration(test, elapsed)
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self.id_durations.append((test.id(), elapsed))
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# Resolve the qualname in the imported module, rather than letting
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# loadTestsFromName() guess where the module name ends: it guesses by trying
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# imports that fail, and a failing import pulls in importlib.resources.
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__import__(module)
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suite = unittest.TestLoader().loadTestsFromName(qualname, sys.modules[module])
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result = _Result()
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suite.run(result)
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def _outcome(kind, test, detail):
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subtest = isinstance(test, _SubTest)
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real = test.test_case if subtest else test
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return {
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'kind': kind,
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'subtest': subtest,
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'desc': test._subDescription() if subtest else '',
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# id() groups outcomes by test method; a non-TestCase (e.g. an
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# _ErrorHolder) marks a setUpClass()/setUpModule() fixture failure.
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'id': real.id(),
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'fixture': not isinstance(real, unittest.TestCase),
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'detail': detail,
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}
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outcomes = [_outcome('failure', t, tb) for t, tb in result.failures]
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outcomes += [_outcome('error', t, tb) for t, tb in result.errors]
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outcomes += [_outcome('expected_failure', t, tb)
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for t, tb in result.expectedFailures]
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outcomes += [_outcome('skipped', t, reason) for t, reason in result.skipped]
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payload = {'outcomes': outcomes, 'durations': result.id_durations}
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with open(outfile, 'wb') as f:
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marshal.dump(payload, f)
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sys.exit(0)
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