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import logging
import os
import sys
import termios
from six import iteritems
import pytest
from mock import patch
from _util import support
# pytest seems to tweak logging such that Invoke's debug logs go to stderr,
# which is then hella spammy if one is using --capture=no (which one must in
# order to test low level terminal IO stuff, as we do!)
# So, we explicitly turn default logging back down.
# NOTE: no real better place to put this than here
# TODO: once pytest-relaxed works with pytest 3.3, see if we can use its new
# logging functionality to remove the need for this.
logging.basicConfig(level=logging.INFO)
@pytest.fixture
def reset_environ():
"""
Resets `os.environ` to its prior state after the fixtured test finishes.
"""
old_environ = os.environ.copy()
yield
os.environ.clear()
os.environ.update(old_environ)
@pytest.fixture
def chdir_support():
# Always do things relative to tests/_support
os.chdir(support)
yield
# Chdir back to project root to avoid problems
os.chdir(os.path.join(os.path.dirname(__file__), ".."))
@pytest.fixture
def clean_sys_modules():
# TODO: _arguably_ it might be cleaner to register this as a 'finalizer'?
# it's not like the yield isn't readable here - it's a fixture that only
# performs teardown.
yield
# Strip any test-support task collections from sys.modules to prevent
# state bleed between tests; otherwise tests can incorrectly pass
# despite not explicitly loading/cd'ing to get the tasks they call
# loaded.
for name, module in iteritems(sys.modules.copy()):
# Get some comparable __file__ path value, including handling cases
# where it is None instead of undefined (seems new in Python 3.7?)
if module and support in (getattr(module, "__file__", "") or ""):
del sys.modules[name]
@pytest.fixture
def integration(reset_environ, chdir_support, clean_sys_modules):
yield
@pytest.fixture
def mock_termios():
with patch("invoke.terminals.termios") as mocked:
# Ensure mocked termios has 'real' values for constants...otherwise
# doing bit arithmetic on Mocks kinda defeats the point.
mocked.ECHO = termios.ECHO
mocked.ICANON = termios.ICANON
mocked.VMIN = termios.VMIN
mocked.VTIME = termios.VTIME
yield mocked
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