/
executive_mock.py
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/
executive_mock.py
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# Copyright (C) 2011 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import logging
import os
from webkitcorepy import BytesIO, string_utils, unicode
from webkitpy.common.system.executive import ScriptError
_log = logging.getLogger(__name__)
class MockProcess(object):
def __init__(self, stdout='MOCK STDOUT\n', stderr=''):
self.pid = 42
self.stdout = BytesIO(string_utils.encode(stdout))
self.stderr = BytesIO(string_utils.encode(stderr))
self.stdin = BytesIO()
self.returncode = 0
self._is_running = False
def wait(self):
self._is_running = False
return self.returncode
def communicate(self, input=None):
self._is_running = False
return (self.stdout, self.stderr)
def poll(self):
if self._is_running:
return None
return self.returncode
def __enter__(self):
return self
def __exit__(self, *args):
self.wait()
# FIXME: This should be unified with MockExecutive2
class MockExecutive(object):
PIPE = "MOCK PIPE"
STDOUT = "MOCK STDOUT"
@staticmethod
def ignore_error(error):
pass
def __init__(self, should_log=False, should_throw=False, should_throw_when_run=None):
self._should_log = should_log
self._should_throw = should_throw
self._should_throw_when_run = should_throw_when_run or set()
# FIXME: Once executive wraps os.getpid() we can just use a static pid for "this" process.
self._running_pids = {'test-webkitpy': os.getpid()}
self._proc = None
self.calls = []
self.pid_to_system_pid = {}
def check_running_pid(self, pid):
return pid in self._running_pids.values()
def running_pids(self, process_name_filter):
running_pids = []
for process_name, process_pid in self._running_pids.items():
if process_name_filter(process_name):
running_pids.append(process_pid)
_log.info("MOCK running_pids: %s" % running_pids)
return running_pids
def run_and_throw_if_fail(self, args, quiet=False, cwd=None, env=None):
if self._should_log:
env_string = ""
if env:
for key in sorted(env.keys()):
if len(env_string):
env_string += ", "
env_string += "'{}': '{}'".format(key, env[key])
env_string = ", env={" + env_string + "}"
_log.info("MOCK run_and_throw_if_fail: %s, cwd=%s%s" % (args, cwd, env_string))
if self._should_throw_when_run.intersection(args):
raise ScriptError("Exception for %s" % args, output="MOCK command output")
return "MOCK output of child process"
def command_for_printing(self, args):
string_args = map(unicode, args)
return " ".join(string_args)
def run_command(self,
args,
cwd=None,
input=None,
stdout=None,
error_handler=None,
ignore_errors=False,
return_exit_code=False,
return_stderr=True,
decode_output=False,
env=None):
self.calls.append(args)
assert(isinstance(args, list) or isinstance(args, tuple))
if self._should_log:
env_string = ""
if env:
for key in sorted(env.keys()):
if len(env_string):
env_string += ", "
env_string += "'{}': '{}'".format(key, env[key])
env_string = ", env={" + env_string + "}"
input_string = ""
if input:
input_string = ", input=%s" % string_utils.decode(input, target_type=str)
_log.info("MOCK run_command: %s, cwd=%s%s%s" % (args, cwd, env_string, input_string))
output = "MOCK output of child process"
if self._should_throw_when_run.intersection(args):
raise ScriptError("Exception for %s" % args, output="MOCK command output")
if self._should_throw:
raise ScriptError("MOCK ScriptError", output=output)
return output
def cpu_count(self):
return 2
def kill_all(self, process_name):
pass
def kill_process(self, pid):
pass
def interrupt(self, pid):
pass
def popen(self, args, cwd=None, env=None, **kwargs):
self.calls.append(args)
if self._should_log:
cwd_string = ""
if cwd:
cwd_string = ", cwd=%s" % cwd
env_string = ""
if env:
env_string = ", env=%s" % env
_log.info("MOCK popen: %s%s%s" % (args, cwd_string, env_string))
if not self._proc:
self._proc = MockProcess()
self._proc._is_running = True
return self._proc
def run_in_parallel(self, commands):
num_previous_calls = len(self.calls)
command_outputs = []
for cmd_line, cwd in commands:
command_outputs.append([0, self.run_command(cmd_line, cwd=cwd), ''])
new_calls = self.calls[num_previous_calls:]
self.calls = self.calls[:num_previous_calls]
self.calls.append(new_calls)
return command_outputs
class MockExecutive2(MockExecutive):
"""MockExecutive2 is like MockExecutive except it doesn't log anything."""
def __init__(self, output='', exit_code=0, exception=None, run_command_fn=None, stderr=''):
self._output = output
self._stderr = stderr
self._exit_code = exit_code
self._exception = exception
self._running_pids = {'test-webkitpy': os.getpid()}
self._run_command_fn = run_command_fn
self.calls = []
def run_command(self,
args,
cwd=None,
input=None,
error_handler=None,
ignore_errors=False,
return_exit_code=False,
return_stderr=True,
decode_output=False,
env=None):
self.calls.append(args)
assert(isinstance(args, list) or isinstance(args, tuple))
if ignore_errors:
assert error_handler is None, "don't specify error_handler if ignore_errors is True"
error_handler = self.ignore_error
if self._exception:
raise self._exception # pylint: disable=E0702
if self._run_command_fn:
return self._run_command_fn(args)
if return_exit_code:
return self._exit_code
if self._exit_code and error_handler:
script_error = ScriptError(script_args=args, exit_code=self._exit_code, output=self._output)
error_handler(script_error)
if return_stderr:
return self._output + self._stderr
return self._output