Files
2021-04-26 11:35:13 -07:00

129 lines
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Python

# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# type: ignore
from functools import reduce
from io import StringIO
from random import sample
from unittest import TestCase
from unittest.mock import call, patch
from opentelemetry.instrumentation import bootstrap
def sample_packages(packages, rate):
sampled = sample(
list(packages),
int(len(packages) * rate),
)
return {k: v for k, v in packages.items() if k in sampled}
class TestBootstrap(TestCase):
installed_libraries = {}
installed_instrumentations = {}
@classmethod
def setUpClass(cls):
# select random 60% of instrumentations
cls.installed_libraries = sample_packages(
bootstrap.instrumentations, 0.6
)
# treat 50% of sampled packages as pre-installed
cls.installed_instrumentations = sample_packages(
cls.installed_libraries, 0.5
)
cls.pkg_patcher = patch(
"opentelemetry.instrumentation.bootstrap._find_installed_libraries",
return_value=cls.installed_libraries,
)
pip_freeze_output = []
for inst in cls.installed_instrumentations.values():
inst = inst.replace(">=", "==")
if "==" not in inst:
inst = "{}==x.y".format(inst)
pip_freeze_output.append(inst)
cls.pip_freeze_patcher = patch(
"opentelemetry.instrumentation.bootstrap._sys_pip_freeze",
return_value="\n".join(pip_freeze_output),
)
cls.pip_install_patcher = patch(
"opentelemetry.instrumentation.bootstrap._sys_pip_install",
)
cls.pip_uninstall_patcher = patch(
"opentelemetry.instrumentation.bootstrap._sys_pip_uninstall",
)
cls.pip_check_patcher = patch(
"opentelemetry.instrumentation.bootstrap._pip_check",
)
cls.pkg_patcher.start()
cls.mock_pip_freeze = cls.pip_freeze_patcher.start()
cls.mock_pip_install = cls.pip_install_patcher.start()
cls.mock_pip_uninstall = cls.pip_uninstall_patcher.start()
cls.mock_pip_check = cls.pip_check_patcher.start()
@classmethod
def tearDownClass(cls):
cls.pip_check_patcher.start()
cls.pip_uninstall_patcher.start()
cls.pip_install_patcher.start()
cls.pip_freeze_patcher.start()
cls.pkg_patcher.stop()
@patch("sys.argv", ["bootstrap", "-a", "pipenv"])
def test_run_unknown_cmd(self):
with self.assertRaises(SystemExit):
bootstrap.run()
@patch("sys.argv", ["bootstrap", "-a", "requirements"])
def test_run_cmd_print(self):
with patch("sys.stdout", new=StringIO()) as fake_out:
bootstrap.run()
self.assertEqual(
fake_out.getvalue(),
"\n".join(self.installed_libraries.values()),
)
@patch("sys.argv", ["bootstrap", "-a", "install"])
def test_run_cmd_install(self):
bootstrap.run()
self.assertEqual(
self.mock_pip_freeze.call_count, len(self.installed_libraries)
)
to_uninstall = reduce(
lambda x, y: x + y,
[
pkgs
for lib, pkgs in bootstrap.libraries.items()
if lib in self.installed_instrumentations
],
)
self.mock_pip_uninstall.assert_has_calls(
[call(i) for i in to_uninstall], any_order=True
)
self.mock_pip_install.assert_has_calls(
[call(i) for i in self.installed_libraries.values()],
any_order=True,
)
self.assertEqual(self.mock_pip_check.call_count, 1)