Files
dvc/tests/conftest.py
T
Saugat Pachhai b5f31daab0 ui: Use sys.stdout and sys.stderr dynamically (#5729)
Before, we used to set it during initialization. But this
made it hard to test using capsys as capsys changes the
reference to sys.stdout and sys.stderr with the mocked one
during the test. But since we are using dvc.ui globally and
setting it to a real sys.stdout and sys.stderr before capsys
comes into effect, testing was not possible with it.

Now, by using property hack, we will be using the values of
sys.stdout and sys.stderr during the time of write, so the mocking
would work and would be easier to test.
2021-03-30 23:44:46 +03:00

148 lines
4.0 KiB
Python

import os
from contextlib import suppress
import pytest
from .dir_helpers import * # noqa, pylint: disable=wildcard-import
from .remotes import * # noqa, pylint: disable=wildcard-import
# Prevent updater and analytics from running their processes
os.environ["DVC_TEST"] = "true"
# Ensure progress output even when not outputting to raw sys.stderr console
os.environ["DVC_IGNORE_ISATTY"] = "true"
REMOTES = {
# remote: enabled_by_default?
"azure": False,
"gdrive": False,
"gs": False,
"hdfs": False,
"http": True,
"oss": False,
"s3": True,
"ssh": True,
"webdav": True,
}
@pytest.fixture(autouse=True)
def reset_loglevel(request, caplog):
"""
Use it to ensure log level at the start of each test
regardless of dvc.logger.setup(), Repo configs or whatever.
"""
ini_opt = None
with suppress(ValueError):
ini_opt = request.config.getini("log_level")
level = request.config.getoption("--log-level") or ini_opt
if level:
with caplog.at_level(level.upper(), logger="dvc"):
yield
else:
yield
@pytest.fixture(autouse=True)
def enable_ui():
from dvc.ui import ui
ui.enable()
@pytest.fixture(scope="session", autouse=True)
def _close_pools():
from dvc.fs.pool import close_pools
yield
close_pools()
def _get_opt(remote_name, action):
return f"--{action}-{remote_name}"
def pytest_addoption(parser):
"""Adds remote-related flags to selectively disable/enable for tests
Eg: If some remotes, eg: ssh is enabled to be tested for by default
(see above `REMOTES`), then, `--disable-ssh` flag is added. If remotes
like `hdfs` are disabled by default, `--enable-hdfs` is added to make them
run.
You can also make everything run-by-default with `--all` flag, which takes
precedence on all previous `--enable-*`/`--disable-*` flags.
"""
parser.addoption(
"--all",
action="store_true",
default=False,
help="Test all of the remotes, unless other flags also supplied",
)
for remote_name in REMOTES:
for action in ("enable", "disable"):
opt = _get_opt(remote_name, action)
parser.addoption(
opt,
action="store_true",
default=None,
help=f"{action} tests for {remote_name}",
)
class DVCTestConfig:
def __init__(self):
self.enabled_remotes = set()
def requires(self, remote_name):
if remote_name not in REMOTES or remote_name in self.enabled_remotes:
return
pytest.skip(f"{remote_name} tests not enabled through CLI")
def apply_marker(self, marker):
self.requires(marker.name)
def pytest_runtest_setup(item):
# Apply test markers to skip tests selectively
# NOTE: this only works on individual tests,
# for fixture, use `test_config` fixture and
# run `test_config.requires(remote_name)`.
for marker in item.iter_markers():
item.config.dvc_config.apply_marker(marker)
@pytest.fixture(scope="session")
def test_config(request):
return request.config.dvc_config
def pytest_configure(config):
config.dvc_config = DVCTestConfig()
for remote_name in REMOTES:
config.addinivalue_line(
"markers", f"{remote_name}: mark test as requiring {remote_name}"
)
enabled_remotes = config.dvc_config.enabled_remotes
if config.getoption("--all"):
enabled_remotes.update(REMOTES)
else:
default_enabled = {k for k, v in REMOTES.items() if v}
enabled_remotes.update(default_enabled)
for remote_name in REMOTES:
enabled_opt = _get_opt(remote_name, "enable")
disabled_opt = _get_opt(remote_name, "disable")
enabled = config.getoption(enabled_opt)
disabled = config.getoption(disabled_opt)
if disabled and enabled:
continue # default behavior if both flags are supplied
if disabled:
enabled_remotes.discard(remote_name)
if enabled:
enabled_remotes.add(remote_name)