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gh-111881: Import doctest lazily in libregrtest (#111884) 

In most cases, doctest is not needed. So don't always import it at
startup. The change reduces the number of modules already
imported when a test is run.
This commit is contained in:
Victor Stinner 2023-11-09 16:00:10 +01:00 committed by GitHub
parent 2f2a0a3a6c
commit 6f09f69b7f
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1 changed files with 8 additions and 5 deletions
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13
Lib/test/libregrtest/single.py
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@ -1,4 +1,3 @@
import doctest
import faulthandler
import gc
import importlib
@ -99,14 +98,18 @@ def regrtest_runner(result: TestResult, test_func, runtests: RunTests) -> None:
stats = test_result
case unittest.TestResult():
stats = TestStats.from_unittest(test_result)
case doctest.TestResults():
stats = TestStats.from_doctest(test_result)
case None:
print_warning(f"{result.test_name} test runner returned None: {test_func}")
stats = None
case _:
print_warning(f"Unknown test result type: {type(test_result)}")
stats = None
# Don't import doctest at top level since only few tests return
# a doctest.TestResult instance.
import doctest
if isinstance(test_result, doctest.TestResults):
stats = TestStats.from_doctest(test_result)
else:
print_warning(f"Unknown test result type: {type(test_result)}")
stats = None
result.stats = stats