Files
dvc/tests/func/experiments/test_checkpoints.py
T
Peter Rowlands (변기호) 07676b2531 checkpoints: set DVC_ROOT environment variable (#4877)
* checkpoints: set DVC_ROOT environment variable

* env: add DVC_ROOT, DVC_CHECKPOINT
2020-11-12 16:26:07 +09:00

126 lines
3.6 KiB
Python

import logging
from textwrap import dedent
import pytest
from funcy import first
import dvc as dvc_module
from dvc.exceptions import DvcException
from dvc.repo.experiments import Experiments
CHECKPOINT_SCRIPT_FORMAT = dedent(
"""\
import os
import sys
import shutil
from time import sleep
from dvc.api import make_checkpoint
checkpoint_file = {}
checkpoint_iterations = int({})
if os.path.exists(checkpoint_file):
with open(checkpoint_file) as fobj:
try:
value = int(fobj.read())
except ValueError:
value = 0
else:
with open(checkpoint_file, "w"):
pass
value = 0
shutil.copyfile({}, {})
if os.getenv("DVC_CHECKPOINT"):
for _ in range(checkpoint_iterations):
value += 1
with open(checkpoint_file, "w") as fobj:
fobj.write(str(value))
make_checkpoint()
"""
)
CHECKPOINT_SCRIPT = CHECKPOINT_SCRIPT_FORMAT.format(
"sys.argv[1]", "sys.argv[2]", "sys.argv[3]", "sys.argv[4]"
)
@pytest.fixture
def checkpoint_stage(tmp_dir, scm, dvc):
tmp_dir.gen("checkpoint.py", CHECKPOINT_SCRIPT)
tmp_dir.gen("params.yaml", "foo: 1")
stage = dvc.run(
cmd="python checkpoint.py foo 5 params.yaml metrics.yaml",
metrics_no_cache=["metrics.yaml"],
params=["foo"],
checkpoints=["foo"],
no_exec=True,
name="checkpoint-file",
)
scm.add(["dvc.yaml", "checkpoint.py", "params.yaml"])
scm.commit("init")
return stage
def test_new_checkpoint(tmp_dir, scm, dvc, checkpoint_stage, mocker):
from dvc.env import DVC_CHECKPOINT, DVC_ROOT
new_mock = mocker.spy(dvc.experiments, "new")
env_mock = mocker.spy(dvc_module.stage.run, "_checkpoint_env")
dvc.experiments.run(checkpoint_stage.addressing, params=["foo=2"])
new_mock.assert_called_once()
env_mock.assert_called_once()
assert set(env_mock.return_value.keys()) == {DVC_CHECKPOINT, DVC_ROOT}
assert (tmp_dir / "foo").read_text() == "5"
assert (
tmp_dir / ".dvc" / "experiments" / "metrics.yaml"
).read_text().strip() == "foo: 2"
@pytest.mark.parametrize("last", [True, False])
def test_resume_checkpoint(tmp_dir, scm, dvc, checkpoint_stage, mocker, last):
with pytest.raises(DvcException):
if last:
dvc.experiments.run(
checkpoint_stage.addressing,
checkpoint_resume=Experiments.LAST_CHECKPOINT,
)
else:
dvc.experiments.run(
checkpoint_stage.addressing, checkpoint_resume="foo"
)
results = dvc.experiments.run(
checkpoint_stage.addressing, params=["foo=2"]
)
if last:
exp_rev = Experiments.LAST_CHECKPOINT
else:
exp_rev = first(results)
dvc.experiments.run(checkpoint_stage.addressing, checkpoint_resume=exp_rev)
assert (tmp_dir / "foo").read_text() == "10"
assert (
tmp_dir / ".dvc" / "experiments" / "metrics.yaml"
).read_text().strip() == "foo: 2"
def test_reset_checkpoint(tmp_dir, scm, dvc, checkpoint_stage, mocker, caplog):
dvc.experiments.run(checkpoint_stage.addressing)
scm.repo.git.reset(hard=True)
scm.repo.git.clean(force=True)
with caplog.at_level(logging.ERROR):
results = dvc.experiments.run(checkpoint_stage.addressing)
assert len(results) == 0
assert "already exists" in caplog.text
dvc.experiments.run(checkpoint_stage.addressing, force=True)
assert (tmp_dir / "foo").read_text() == "5"
assert (
tmp_dir / ".dvc" / "experiments" / "metrics.yaml"
).read_text().strip() == "foo: 1"