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# Copyright 2015-2021 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <https://www.gnu.org/licenses/>.
"""Test testprocess.Process."""
import sys
import time
import contextlib
import datetime
import pytest
from qutebrowser.qt.core import QProcess
from end2end.fixtures import testprocess
pytestmark = [pytest.mark.not_frozen]
@contextlib.contextmanager
def stopwatch(min_ms=None, max_ms=None):
if min_ms is None and max_ms is None:
raise ValueError("Using stopwatch with both min_ms/max_ms None does "
"nothing.")
start = datetime.datetime.now()
yield
stop = datetime.datetime.now()
delta_ms = (stop - start).total_seconds() * 1000
if min_ms is not None:
assert delta_ms >= min_ms
if max_ms is not None:
assert delta_ms <= max_ms
class PythonProcess(testprocess.Process):
"""A testprocess which runs the given Python code."""
def __init__(self, request):
super().__init__(request)
self.proc.setReadChannel(QProcess.ProcessChannel.StandardOutput)
self.code = None
def _parse_line(self, line):
print("LINE: {}".format(line))
if line.strip() == 'ready':
self.ready.emit()
return testprocess.Line(line)
def _executable_args(self):
code = [
'import sys, time',
'print("ready")',
'sys.stdout.flush()',
self.code,
'sys.stdout.flush()',
'time.sleep(20)',
]
return (sys.executable, ['-c', ';'.join(code)])
def _default_args(self):
return []
class QuitPythonProcess(PythonProcess):
"""A testprocess which quits immediately."""
def _executable_args(self):
code = [
'import sys',
'print("ready")',
'sys.exit(0)',
]
return (sys.executable, ['-c', ';'.join(code)])
class NoReadyPythonProcess(PythonProcess):
"""A testprocess which never emits 'ready' and quits."""
def _executable_args(self):
code = [
'import sys',
'sys.exit(0)',
]
return (sys.executable, ['-c', ';'.join(code)])
@pytest.fixture
def pyproc(request):
proc = PythonProcess(request)
yield proc
proc.terminate()
@pytest.fixture
def quit_pyproc(request):
proc = QuitPythonProcess(request)
yield proc
proc.terminate()
@pytest.fixture
def noready_pyproc(request):
proc = NoReadyPythonProcess(request)
yield proc
proc.terminate()
def test_no_ready_python_process(noready_pyproc):
"""When a process quits immediately, waiting for start should interrupt."""
with pytest.raises(testprocess.ProcessExited):
with stopwatch(max_ms=5000):
noready_pyproc.start()
def test_quitting_process(qtbot, quit_pyproc):
with qtbot.wait_signal(quit_pyproc.proc.finished):
quit_pyproc.start()
with pytest.raises(testprocess.ProcessExited):
quit_pyproc.after_test()
def test_quitting_process_expected(qtbot, quit_pyproc):
quit_pyproc.exit_expected = True
with qtbot.wait_signal(quit_pyproc.proc.finished):
quit_pyproc.start()
quit_pyproc.after_test()
def test_process_never_started(qtbot, quit_pyproc):
"""Calling after_test without start should not fail."""
quit_pyproc.after_test()
def test_wait_signal_raising(request, qtbot):
"""testprocess._wait_signal should raise by default."""
proc = testprocess.Process(request)
with pytest.raises(qtbot.TimeoutError):
with proc._wait_signal(proc.proc.started, timeout=0):
pass
def test_custom_environment(pyproc):
pyproc.code = 'import os; print(os.environ["CUSTOM_ENV"])'
pyproc.start(env={'CUSTOM_ENV': 'blah'})
pyproc.wait_for(data='blah')
@pytest.mark.posix
def test_custom_environment_system_env(monkeypatch, pyproc):
"""When env=... is given, the system environment should be present."""
monkeypatch.setenv('QUTE_TEST_ENV', 'blubb')
pyproc.code = 'import os; print(os.environ["QUTE_TEST_ENV"])'
pyproc.start(env={})
pyproc.wait_for(data='blubb')
class TestWaitFor:
def test_successful(self, pyproc):
"""Using wait_for with the expected text."""
pyproc.code = "time.sleep(0.5); print('foobar')"
with stopwatch(min_ms=500):
pyproc.start()
pyproc.wait_for(data="foobar")
def test_other_text(self, pyproc):
"""Test wait_for when getting some unrelated text."""
pyproc.code = "time.sleep(0.1); print('blahblah')"
pyproc.start()
with pytest.raises(testprocess.WaitForTimeout):
pyproc.wait_for(data="foobar", timeout=500)
def test_no_text(self, pyproc):
"""Test wait_for when getting no text at all."""
pyproc.code = "pass"
pyproc.start()
with pytest.raises(testprocess.WaitForTimeout):
pyproc.wait_for(data="foobar", timeout=100)
@pytest.mark.parametrize('message', ['foobar', 'literal [x]'])
def test_existing_message(self, message, pyproc):
"""Test with a message which already passed when waiting."""
pyproc.code = "print('{}')".format(message)
pyproc.start()
time.sleep(0.5) # to make sure the message is printed
pyproc.wait_for(data=message)
def test_existing_message_previous_test(self, pyproc):
"""Make sure the message of a previous test gets ignored."""
pyproc.code = "print('foobar')"
pyproc.start()
line = pyproc.wait_for(data="foobar")
line.waited_for = False # so we don't test what the next test does
pyproc.after_test()
with pytest.raises(testprocess.WaitForTimeout):
pyproc.wait_for(data="foobar", timeout=100)
def test_existing_message_already_waited(self, pyproc):
"""Make sure an existing message doesn't stop waiting twice.
wait_for checks existing messages (see above), but we don't want it to
automatically proceed if we already *did* use wait_for on one of the
existing messages, as that makes it likely it's not what we actually
want.
"""
pyproc.code = "time.sleep(0.1); print('foobar')"
pyproc.start()
pyproc.wait_for(data="foobar")
with pytest.raises(testprocess.WaitForTimeout):
pyproc.wait_for(data="foobar", timeout=100)
def test_no_kwargs(self, pyproc):
"""Using wait_for without kwargs should raise an exception.
Otherwise it'd match automatically because of the all(matches).
"""
with pytest.raises(TypeError):
pyproc.wait_for()
def test_do_skip(self, pyproc):
"""Test wait_for when getting no text at all, with do_skip."""
pyproc.code = "pass"
pyproc.start()
with pytest.raises(pytest.skip.Exception):
pyproc.wait_for(data="foobar", timeout=100, do_skip=True)
class TestEnsureNotLogged:
@pytest.mark.parametrize('message, pattern', [
('blacklisted', 'blacklisted'),
('bl[a]cklisted', 'bl[a]cklisted'),
('blacklisted', 'black*'),
])
def test_existing_message(self, pyproc, message, pattern):
pyproc.code = "print('{}')".format(message)
pyproc.start()
with stopwatch(max_ms=1000):
with pytest.raises(testprocess.BlacklistedMessageError):
pyproc.ensure_not_logged(data=pattern, delay=2000)
def test_late_message(self, pyproc):
pyproc.code = "time.sleep(0.5); print('blacklisted')"
pyproc.start()
with pytest.raises(testprocess.BlacklistedMessageError):
pyproc.ensure_not_logged(data='blacklisted', delay=5000)
def test_no_matching_message(self, pyproc):
pyproc.code = "print('blacklisted... nope!')"
pyproc.start()
pyproc.ensure_not_logged(data='blacklisted', delay=100)
def test_wait_for_and_blacklist(self, pyproc):
pyproc.code = "print('blacklisted')"
pyproc.start()
pyproc.wait_for(data='blacklisted')
with pytest.raises(testprocess.BlacklistedMessageError):
pyproc.ensure_not_logged(data='blacklisted', delay=0)
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