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|
#!/usr/bin/env python3
# Copyright 2019 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Tests for auto bisection of LLVM."""
import json
import os
import subprocess
import time
import traceback
import unittest
from unittest import mock
import auto_llvm_bisection
import chroot
import llvm_bisection
import test_helpers
import update_tryjob_status
class AutoLLVMBisectionTest(unittest.TestCase):
"""Unittests for auto bisection of LLVM."""
@mock.patch.object(chroot, "VerifyChromeOSRoot")
@mock.patch.object(chroot, "VerifyOutsideChroot", return_value=True)
@mock.patch.object(
llvm_bisection,
"GetCommandLineArgs",
return_value=test_helpers.ArgsOutputTest(),
)
@mock.patch.object(time, "sleep")
@mock.patch.object(traceback, "print_exc")
@mock.patch.object(llvm_bisection, "main")
@mock.patch.object(os.path, "isfile")
@mock.patch.object(auto_llvm_bisection, "open")
@mock.patch.object(json, "load")
@mock.patch.object(auto_llvm_bisection, "GetBuildResult")
@mock.patch.object(os, "rename")
def testAutoLLVMBisectionPassed(
self,
# pylint: disable=unused-argument
mock_rename,
mock_get_build_result,
mock_json_load,
# pylint: disable=unused-argument
mock_open,
mock_isfile,
mock_llvm_bisection,
mock_traceback,
mock_sleep,
mock_get_args,
mock_outside_chroot,
mock_chromeos_root,
):
mock_isfile.side_effect = [False, False, True, True]
mock_llvm_bisection.side_effect = [
0,
ValueError("Failed to launch more tryjobs."),
llvm_bisection.BisectionExitStatus.BISECTION_COMPLETE.value,
]
mock_json_load.return_value = {
"start": 369410,
"end": 369420,
"jobs": [
{
"buildbucket_id": 12345,
"rev": 369411,
"status": update_tryjob_status.TryjobStatus.PENDING.value,
}
],
}
mock_get_build_result.return_value = (
update_tryjob_status.TryjobStatus.GOOD.value
)
# Verify the excpetion is raised when successfully found the bad
# revision. Uses `sys.exit(0)` to indicate success.
with self.assertRaises(SystemExit) as err:
auto_llvm_bisection.main()
self.assertEqual(err.exception.code, 0)
mock_outside_chroot.assert_called_once()
mock_get_args.assert_called_once()
self.assertEqual(mock_isfile.call_count, 3)
self.assertEqual(mock_llvm_bisection.call_count, 3)
mock_traceback.assert_called_once()
mock_sleep.assert_called_once()
@mock.patch.object(chroot, "VerifyChromeOSRoot")
@mock.patch.object(chroot, "VerifyOutsideChroot", return_value=True)
@mock.patch.object(time, "sleep")
@mock.patch.object(traceback, "print_exc")
@mock.patch.object(llvm_bisection, "main")
@mock.patch.object(os.path, "isfile")
@mock.patch.object(
llvm_bisection,
"GetCommandLineArgs",
return_value=test_helpers.ArgsOutputTest(),
)
def testFailedToStartBisection(
self,
mock_get_args,
mock_isfile,
mock_llvm_bisection,
mock_traceback,
mock_sleep,
mock_outside_chroot,
mock_chromeos_root,
):
mock_isfile.return_value = False
mock_llvm_bisection.side_effect = ValueError(
"Failed to launch more tryjobs."
)
# Verify the exception is raised when the number of attempts to launched
# more tryjobs is exceeded, so unable to continue
# bisection.
with self.assertRaises(SystemExit) as err:
auto_llvm_bisection.main()
self.assertEqual(err.exception.code, "Unable to continue bisection.")
mock_chromeos_root.assert_called_once()
mock_outside_chroot.assert_called_once()
mock_get_args.assert_called_once()
self.assertEqual(mock_isfile.call_count, 2)
self.assertEqual(mock_llvm_bisection.call_count, 3)
self.assertEqual(mock_traceback.call_count, 3)
self.assertEqual(mock_sleep.call_count, 2)
@mock.patch.object(chroot, "VerifyChromeOSRoot")
@mock.patch.object(chroot, "VerifyOutsideChroot", return_value=True)
@mock.patch.object(
llvm_bisection,
"GetCommandLineArgs",
return_value=test_helpers.ArgsOutputTest(),
)
@mock.patch.object(time, "time")
@mock.patch.object(time, "sleep")
@mock.patch.object(os.path, "isfile")
@mock.patch.object(auto_llvm_bisection, "open")
@mock.patch.object(json, "load")
@mock.patch.object(auto_llvm_bisection, "GetBuildResult")
def testFailedToUpdatePendingTryJobs(
self,
mock_get_build_result,
mock_json_load,
# pylint: disable=unused-argument
mock_open,
mock_isfile,
mock_sleep,
mock_time,
mock_get_args,
mock_outside_chroot,
mock_chromeos_root,
):
# Simulate behavior of `time.time()` for time passed.
@test_helpers.CallCountsToMockFunctions
def MockTimePassed(call_count):
if call_count < 3:
return call_count
assert False, "Called `time.time()` more than expected."
mock_isfile.return_value = True
mock_json_load.return_value = {
"start": 369410,
"end": 369420,
"jobs": [
{
"buildbucket_id": 12345,
"rev": 369411,
"status": update_tryjob_status.TryjobStatus.PENDING.value,
}
],
}
mock_get_build_result.return_value = None
mock_time.side_effect = MockTimePassed
# Reduce the polling limit for the test case to terminate faster.
auto_llvm_bisection.POLLING_LIMIT_SECS = 1
# Verify the exception is raised when unable to update tryjobs whose
# 'status' value is 'pending'.
with self.assertRaises(SystemExit) as err:
auto_llvm_bisection.main()
self.assertEqual(
err.exception.code, "Failed to update pending tryjobs."
)
mock_outside_chroot.assert_called_once()
mock_get_args.assert_called_once()
self.assertEqual(mock_isfile.call_count, 2)
mock_sleep.assert_called_once()
self.assertEqual(mock_time.call_count, 3)
@mock.patch.object(subprocess, "check_output")
def testGetBuildResult(self, mock_chroot_command):
buildbucket_id = 192
status = auto_llvm_bisection.BuilderStatus.PASS.value
tryjob_contents = {buildbucket_id: {"status": status}}
mock_chroot_command.return_value = json.dumps(tryjob_contents)
chroot_path = "/some/path/to/chroot"
self.assertEqual(
auto_llvm_bisection.GetBuildResult(chroot_path, buildbucket_id),
update_tryjob_status.TryjobStatus.GOOD.value,
)
mock_chroot_command.assert_called_once_with(
[
"cros",
"buildresult",
"--buildbucket-id",
str(buildbucket_id),
"--report",
"json",
],
cwd="/some/path/to/chroot",
stderr=subprocess.STDOUT,
encoding="UTF-8",
)
@mock.patch.object(subprocess, "check_output")
def testGetBuildResultPassedWithUnstartedTryjob(self, mock_chroot_command):
buildbucket_id = 192
chroot_path = "/some/path/to/chroot"
mock_chroot_command.side_effect = subprocess.CalledProcessError(
returncode=1, cmd=[], output="No build found. Perhaps not started"
)
auto_llvm_bisection.GetBuildResult(chroot_path, buildbucket_id)
mock_chroot_command.assert_called_once_with(
[
"cros",
"buildresult",
"--buildbucket-id",
"192",
"--report",
"json",
],
cwd=chroot_path,
stderr=subprocess.STDOUT,
encoding="UTF-8",
)
@mock.patch.object(subprocess, "check_output")
def testGetBuildReusultFailedWithInvalidBuildStatus(
self, mock_chroot_command
):
chroot_path = "/some/path/to/chroot"
buildbucket_id = 50
invalid_build_status = "querying"
tryjob_contents = {buildbucket_id: {"status": invalid_build_status}}
mock_chroot_command.return_value = json.dumps(tryjob_contents)
# Verify an exception is raised when the return value of `cros
# buildresult` is not in the `builder_status_mapping`.
with self.assertRaises(ValueError) as err:
auto_llvm_bisection.GetBuildResult(chroot_path, buildbucket_id)
self.assertEqual(
str(err.exception),
'"cros buildresult" return value is invalid: %s'
% invalid_build_status,
)
mock_chroot_command.assert_called_once_with(
[
"cros",
"buildresult",
"--buildbucket-id",
str(buildbucket_id),
"--report",
"json",
],
cwd=chroot_path,
stderr=subprocess.STDOUT,
encoding="UTF-8",
)
if __name__ == "__main__":
unittest.main()
|
