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bpo-37069: regrtest uses sys.unraisablehook (GH-13759)

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regrtest now uses sys.unraisablehook() to mark a test as "environment
altered" (ENV_CHANGED) if it emits an "unraisable exception".
Moreover, regrtest logs a warning in this case.

Use "python3 -m test --fail-env-changed" to catch unraisable
exceptions in tests.
This commit is contained in:
Victor Stinner 2019-06-13 01:09:04 +02:00 • committed by GitHub
parent 913fa1c824
commit 95f61c8b16
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4 changed files with 57 additions and 1 deletions
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17
Lib/test/libregrtest/utils.py
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@ -2,6 +2,7 @@ import math
import os.path
import sys
import textwrap
from test import support
def format_duration(seconds):
@ -59,3 +60,19 @@ def printlist(x, width=70, indent=4, file=None):
def print_warning(msg):
print(f"Warning -- {msg}", file=sys.stderr, flush=True)
orig_unraisablehook = None
def regrtest_unraisable_hook(unraisable):
global orig_unraisablehook
support.environment_altered = True
print_warning("Unraisable exception")
orig_unraisablehook(unraisable)
def setup_unraisable_hook():
global orig_unraisablehook
orig_unraisablehook = sys.unraisablehook
sys.unraisablehook = regrtest_unraisable_hook