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# Copyright 2022 The Android Open Source Project
#
# 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.
"""Unittests for the repo_trace.py module."""
import os
import unittest
from unittest import mock
import repo_trace
class TraceTests(unittest.TestCase):
"""Check Trace behavior."""
def testTrace_MaxSizeEnforced(self):
content = 'git chicken'
with repo_trace.Trace(content, first_trace=True):
pass
first_trace_size = os.path.getsize(repo_trace._TRACE_FILE)
with repo_trace.Trace(content):
pass
self.assertGreater(
os.path.getsize(repo_trace._TRACE_FILE), first_trace_size)
# Check we clear everything is the last chunk is larger than _MAX_SIZE.
with mock.patch('repo_trace._MAX_SIZE', 0):
with repo_trace.Trace(content, first_trace=True):
pass
self.assertEqual(first_trace_size,
os.path.getsize(repo_trace._TRACE_FILE))
# Check we only clear the chunks we need to.
repo_trace._MAX_SIZE = (first_trace_size + 1) / (1024 * 1024)
with repo_trace.Trace(content, first_trace=True):
pass
self.assertEqual(first_trace_size * 2,
os.path.getsize(repo_trace._TRACE_FILE))
with repo_trace.Trace(content, first_trace=True):
pass
self.assertEqual(first_trace_size * 2,
os.path.getsize(repo_trace._TRACE_FILE))
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