Current File : //lib/python3/dist-packages/twisted/trial/test/__init__.py
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Unit tests for the Trial unit-testing framework.
"""
from hypothesis import HealthCheck, settings
def _activateHypothesisProfile() -> None:
"""
Load a Hypothesis profile appropriate for a Twisted test suite.
"""
deterministic = settings(
# Disable the deadline. It is too hard to guarantee that a particular
# piece of Python code will always run in less than some fixed amount
# of time. Hardware capabilities, the OS scheduler, the Python
# garbage collector, and other factors all combine to make substantial
# outliers possible. Such failures are a distraction from development
# and a hassle on continuous integration environments.
deadline=None,
suppress_health_check=[
# With the same reasoning as above, disable the Hypothesis time
# limit on data generation by example search strategies.
HealthCheck.too_slow,
],
# When a developer is working on one set of changes, or continuous
# integration system is testing them, it is disruptive for Hypothesis
# to discover a bug in pre-existing code. This is just what
# Hypothesis will do by default, by exploring a pseudo-randomly
# different set of examples each time. Such failures are a
# distraction from development and a hassle in continuous integration
# environments.
derandomize=True,
)
settings.register_profile("twisted_trial_test_profile_deterministic", deterministic)
settings.load_profile("twisted_trial_test_profile_deterministic")
_activateHypothesisProfile()
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