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from contextlib import suppress
import os
from pathlib import Path
import sys
import execnet
import pytest
from xdist.workermanage import NodeManager
@pytest.fixture
def monkeypatch_3_cpus(monkeypatch: pytest.MonkeyPatch) -> None:
"""Make pytest-xdist believe the system has 3 CPUs."""
# block import
monkeypatch.setitem(sys.modules, "psutil", None)
monkeypatch.delattr(os, "sched_getaffinity", raising=False)
monkeypatch.setattr(os, "cpu_count", lambda: 3)
def test_dist_incompatibility_messages(pytester: pytest.Pytester) -> None:
result = pytester.runpytest("--pdb", "--looponfail")
assert result.ret != 0
result = pytester.runpytest("--pdb", "-n", "3")
assert result.ret != 0
assert "incompatible" in result.stderr.str()
result = pytester.runpytest("--pdb", "-d", "--tx", "popen")
assert result.ret != 0
assert "incompatible" in result.stderr.str()
def test_dist_options(pytester: pytest.Pytester) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
config = pytester.parseconfigure("-n 2")
check_options(config)
assert config.option.dist == "load"
assert config.option.tx == ["popen"] * 2
config = pytester.parseconfigure("--numprocesses", "2")
check_options(config)
assert config.option.dist == "load"
assert config.option.tx == ["popen"] * 2
config = pytester.parseconfigure("--numprocesses", "3", "--maxprocesses", "2")
check_options(config)
assert config.option.dist == "load"
assert config.option.tx == ["popen"] * 2
config = pytester.parseconfigure("-d")
check_options(config)
assert config.option.dist == "load"
config = pytester.parseconfigure("--numprocesses", "0")
check_options(config)
assert config.option.dist == "no"
assert config.option.tx == []
config = pytester.parseconfigure("--numprocesses", "0", "-d")
check_options(config)
assert config.option.dist == "no"
assert config.option.tx == []
config = pytester.parseconfigure(
"--numprocesses", "0", "--dist", "each", "--tx", "2*popen"
)
check_options(config)
assert config.option.dist == "no"
assert config.option.tx == []
def test_auto_detect_cpus(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.delenv("PYTEST_XDIST_AUTO_NUM_WORKERS", raising=False)
with suppress(ImportError):
import psutil
monkeypatch.setattr(psutil, "cpu_count", lambda logical=True: None)
if hasattr(os, "sched_getaffinity"):
monkeypatch.setattr(os, "sched_getaffinity", lambda _pid: set(range(99)))
elif hasattr(os, "cpu_count"):
monkeypatch.setattr(os, "cpu_count", lambda: 99)
else:
import multiprocessing
monkeypatch.setattr(multiprocessing, "cpu_count", lambda: 99)
config = pytester.parseconfigure("-n2")
assert config.getoption("numprocesses") == 2
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 99
for numprocesses in (0, "auto", "logical"):
config = pytester.parseconfigure(f"-n{numprocesses}", "--pdb")
check_options(config)
assert config.getoption("usepdb")
assert config.getoption("numprocesses") == 0
assert config.getoption("dist") == "no"
monkeypatch.delattr(os, "sched_getaffinity", raising=False)
monkeypatch.setenv("TRAVIS", "true")
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 2
def test_auto_detect_cpus_psutil(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
psutil = pytest.importorskip("psutil")
monkeypatch.delenv("PYTEST_XDIST_AUTO_NUM_WORKERS", raising=False)
monkeypatch.setattr(psutil, "cpu_count", lambda logical=True: 84 if logical else 42)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 42
config = pytester.parseconfigure("-nlogical")
check_options(config)
assert config.getoption("numprocesses") == 84
def test_auto_detect_cpus_os(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch, monkeypatch_3_cpus: None
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.delenv("PYTEST_XDIST_AUTO_NUM_WORKERS", raising=False)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 3
config = pytester.parseconfigure("-nlogical")
check_options(config)
assert config.getoption("numprocesses") == 3
def test_hook_auto_num_workers(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
pytester.makeconftest(
"""
def pytest_xdist_auto_num_workers():
return 42
"""
)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 42
config = pytester.parseconfigure("-nlogical")
check_options(config)
assert config.getoption("numprocesses") == 42
def test_hook_auto_num_workers_arg(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch
) -> None:
# config.option.numprocesses is a pytest feature,
# but we document it so let's test it.
from xdist.plugin import pytest_cmdline_main as check_options
pytester.makeconftest(
"""
def pytest_xdist_auto_num_workers(config):
if config.option.numprocesses == 'auto':
return 42
if config.option.numprocesses == 'logical':
return 8
"""
)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 42
config = pytester.parseconfigure("-nlogical")
check_options(config)
assert config.getoption("numprocesses") == 8
def test_hook_auto_num_workers_none(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch, monkeypatch_3_cpus: None
) -> None:
# Returning None from a hook to skip it is pytest behavior,
# but we document it so let's test it.
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.delenv("PYTEST_XDIST_AUTO_NUM_WORKERS", raising=False)
pytester.makeconftest(
"""
def pytest_xdist_auto_num_workers():
return None
"""
)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 3
monkeypatch.setenv("PYTEST_XDIST_AUTO_NUM_WORKERS", "5")
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 5
def test_envvar_auto_num_workers(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.setenv("PYTEST_XDIST_AUTO_NUM_WORKERS", "7")
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 7
config = pytester.parseconfigure("-nlogical")
check_options(config)
assert config.getoption("numprocesses") == 7
def test_envvar_auto_num_workers_warn(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch, monkeypatch_3_cpus: None
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.setenv("PYTEST_XDIST_AUTO_NUM_WORKERS", "fourscore")
config = pytester.parseconfigure("-nauto")
with pytest.warns(UserWarning):
check_options(config)
assert config.getoption("numprocesses") == 3
def test_auto_num_workers_hook_overrides_envvar(
pytester: pytest.Pytester, monkeypatch: pytest.MonkeyPatch, monkeypatch_3_cpus: None
) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
monkeypatch.setenv("PYTEST_XDIST_AUTO_NUM_WORKERS", "987")
pytester.makeconftest(
"""
def pytest_xdist_auto_num_workers():
return 2
"""
)
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 2
config = pytester.parseconfigure("-nauto")
check_options(config)
assert config.getoption("numprocesses") == 2
def test_dsession_with_collect_only(pytester: pytest.Pytester) -> None:
from xdist.plugin import pytest_cmdline_main as check_options
from xdist.plugin import pytest_configure as configure
config = pytester.parseconfigure("-n1")
check_options(config)
configure(config)
assert config.pluginmanager.hasplugin("dsession")
config = pytester.parseconfigure("-n1", "--collect-only")
check_options(config)
configure(config)
assert not config.pluginmanager.hasplugin("dsession")
def test_testrunuid_provided(pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--testrunuid", "test123", "--tx=popen")
nm = NodeManager(config)
assert nm.testrunuid == "test123"
def test_testrunuid_generated(pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--tx=popen")
nm = NodeManager(config)
assert len(nm.testrunuid) == 32
class TestDistOptions:
def test_getxspecs(self, pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--tx=popen", "--tx", "ssh=xyz")
nodemanager = NodeManager(config)
xspecs = nodemanager._gettxspecs()
assert len(xspecs) == 2
print(xspecs)
assert xspecs[0].popen
assert xspecs[1].ssh == "xyz"
def test_xspecs_multiplied(self, pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--tx=3*popen")
xspecs = NodeManager(config)._gettxspecs()
assert len(xspecs) == 3
assert xspecs[1].popen
def test_getrsyncdirs(self, pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--rsyncdir=" + str(pytester.path))
nm = NodeManager(config, specs=[execnet.XSpec("popen")])
assert not nm._getrsyncdirs()
nm = NodeManager(config, specs=[execnet.XSpec("popen//chdir=qwe")])
assert nm.roots
assert pytester.path in nm.roots
def test_getrsyncignore(self, pytester: pytest.Pytester) -> None:
config = pytester.parseconfigure("--rsyncignore=fo*")
nm = NodeManager(config, specs=[execnet.XSpec("popen//chdir=qwe")])
assert "fo*" in nm.rsyncoptions["ignores"]
def test_getrsyncdirs_with_conftest(self, pytester: pytest.Pytester) -> None:
p = Path.cwd()
for bn in ("x", "y", "z"):
p.joinpath(bn).mkdir()
pytester.makeini(
"""
[pytest]
rsyncdirs= x
"""
)
config = pytester.parseconfigure(pytester.path, "--rsyncdir=y", "--rsyncdir=z")
nm = NodeManager(config, specs=[execnet.XSpec("popen//chdir=xyz")])
roots = nm._getrsyncdirs()
# assert len(roots) == 3 + 1 # pylib
assert Path("y").resolve() in roots
assert Path("z").resolve() in roots
assert pytester.path.joinpath("x") in roots
|
