# -*- coding: utf-8 -*- """IPython Test Process Controller This module runs one or more subprocesses which will actually run the IPython test suite. """ #----------------------------------------------------------------------------- # Copyright (C) 2009-2011 The IPython Development Team # # Distributed under the terms of the BSD License. The full license is in # the file COPYING, distributed as part of this software. #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Imports #----------------------------------------------------------------------------- from __future__ import print_function import argparse import multiprocessing.pool from multiprocessing import Process, Queue import os import shutil import signal import sys import subprocess import time from .iptest import have, test_group_names as py_test_group_names, test_sections from IPython.utils.path import compress_user from IPython.utils.py3compat import bytes_to_str from IPython.utils.sysinfo import get_sys_info from IPython.utils.tempdir import TemporaryDirectory class TestController(object): """Run tests in a subprocess """ #: str, IPython test suite to be executed. section = None #: list, command line arguments to be executed cmd = None #: dict, extra environment variables to set for the subprocess env = None #: list, TemporaryDirectory instances to clear up when the process finishes dirs = None #: subprocess.Popen instance process = None #: str, process stdout+stderr stdout = None def __init__(self): self.cmd = [] self.env = {} self.dirs = [] def setup(self): """Create temporary directories etc. This is only called when we know the test group will be run. Things created here may be cleaned up by self.cleanup(). """ pass def launch(self, buffer_output=False): # print('*** ENV:', self.env) # dbg # print('*** CMD:', self.cmd) # dbg env = os.environ.copy() env.update(self.env) output = subprocess.PIPE if buffer_output else None stdout = subprocess.STDOUT if buffer_output else None self.process = subprocess.Popen(self.cmd, stdout=output, stderr=stdout, env=env) def wait(self): self.stdout, _ = self.process.communicate() return self.process.returncode def print_extra_info(self): """Print extra information about this test run. If we're running in parallel and showing the concise view, this is only called if the test group fails. Otherwise, it's called before the test group is started. The base implementation does nothing, but it can be overridden by subclasses. """ return def cleanup_process(self): """Cleanup on exit by killing any leftover processes.""" subp = self.process if subp is None or (subp.poll() is not None): return # Process doesn't exist, or is already dead. try: print('Cleaning up stale PID: %d' % subp.pid) subp.kill() except: # (OSError, WindowsError) ? # This is just a best effort, if we fail or the process was # really gone, ignore it. pass else: for i in range(10): if subp.poll() is None: time.sleep(0.1) else: break if subp.poll() is None: # The process did not die... print('... failed. Manual cleanup may be required.') def cleanup(self): "Kill process if it's still alive, and clean up temporary directories" self.cleanup_process() for td in self.dirs: td.cleanup() __del__ = cleanup class PyTestController(TestController): """Run Python tests using IPython.testing.iptest""" #: str, Python command to execute in subprocess pycmd = None def __init__(self, section, options): """Create new test runner.""" TestController.__init__(self) self.section = section # pycmd is put into cmd[2] in PyTestController.launch() self.cmd = [sys.executable, '-c', None, section] self.pycmd = "from IPython.testing.iptest import run_iptest; run_iptest()" self.options = options def setup(self): ipydir = TemporaryDirectory() self.dirs.append(ipydir) self.env['IPYTHONDIR'] = ipydir.name self.workingdir = workingdir = TemporaryDirectory() self.dirs.append(workingdir) self.env['IPTEST_WORKING_DIR'] = workingdir.name # This means we won't get odd effects from our own matplotlib config self.env['MPLCONFIGDIR'] = workingdir.name # From options: if self.options.xunit: self.add_xunit() if self.options.coverage: self.add_coverage() self.env['IPTEST_SUBPROC_STREAMS'] = self.options.subproc_streams self.cmd.extend(self.options.extra_args) @property def will_run(self): try: return test_sections[self.section].will_run except KeyError: return True def add_xunit(self): xunit_file = os.path.abspath(self.section + '.xunit.xml') self.cmd.extend(['--with-xunit', '--xunit-file', xunit_file]) def add_coverage(self): try: sources = test_sections[self.section].includes except KeyError: sources = ['IPython'] coverage_rc = ("[run]\n" "data_file = {data_file}\n" "source =\n" " {source}\n" ).format(data_file=os.path.abspath('.coverage.'+self.section), source="\n ".join(sources)) config_file = os.path.join(self.workingdir.name, '.coveragerc') with open(config_file, 'w') as f: f.write(coverage_rc) self.env['COVERAGE_PROCESS_START'] = config_file self.pycmd = "import coverage; coverage.process_startup(); " + self.pycmd def launch(self, buffer_output=False): self.cmd[2] = self.pycmd super(PyTestController, self).launch(buffer_output=buffer_output) js_prefix = 'js/' def get_js_test_dir(): import IPython.html.tests as t return os.path.join(os.path.dirname(t.__file__), '') def all_js_groups(): import glob test_dir = get_js_test_dir() all_subdirs = glob.glob(test_dir + '*/') return [js_prefix+os.path.relpath(x, test_dir) for x in all_subdirs if os.path.relpath(x, test_dir) != '__pycache__'] class JSController(TestController): """Run CasperJS tests """ def __init__(self, section): """Create new test runner.""" TestController.__init__(self) self.section = section js_test_dir = get_js_test_dir() includes = '--includes=' + os.path.join(js_test_dir,'util.js') test_cases = os.path.join(js_test_dir, self.section[len(js_prefix):]) self.cmd = ['casperjs', 'test', includes, test_cases] def setup(self): self.ipydir = TemporaryDirectory() self.nbdir = TemporaryDirectory() self.dirs.append(self.ipydir) self.dirs.append(self.nbdir) os.makedirs(os.path.join(self.nbdir.name, os.path.join(u'sub ∂ir1', u'sub ∂ir 1a'))) os.makedirs(os.path.join(self.nbdir.name, os.path.join(u'sub ∂ir2', u'sub ∂ir 1b'))) # start the ipython notebook, so we get the port number self._init_server() self.cmd.append('--port=%s' % self.server_port) def print_extra_info(self): print("Running tests with notebook directory %r" % self.nbdir.name) @property def will_run(self): return all(have[a] for a in ['zmq', 'tornado', 'jinja2', 'casperjs']) def _init_server(self): "Start the notebook server in a separate process" self.queue = q = Queue() self.server = Process(target=run_webapp, args=(q, self.ipydir.name, self.nbdir.name)) self.server.start() self.server_port = q.get() def cleanup(self): self.server.terminate() self.server.join() TestController.cleanup(self) def run_webapp(q, ipydir, nbdir, loglevel=0): """start the IPython Notebook, and pass port back to the queue""" import os import IPython.html.notebookapp as nbapp import sys sys.stderr = open(os.devnull, 'w') server = nbapp.NotebookApp() args = ['--no-browser'] args.extend(['--ipython-dir', ipydir, '--notebook-dir', nbdir, '--log-level', str(loglevel), ]) # ipc doesn't work on Windows, and darwin has crazy-long temp paths, # which run afoul of ipc's maximum path length. if sys.platform.startswith('linux'): args.append('--KernelManager.transport=ipc') server.initialize(args) # communicate the port number to the parent process q.put(server.port) server.start() def prepare_controllers(options): """Returns two lists of TestController instances, those to run, and those not to run.""" testgroups = options.testgroups if testgroups: py_testgroups = [g for g in testgroups if (g in py_test_group_names) \ or g.startswith('IPython.')] if 'js' in testgroups: js_testgroups = all_js_groups() else: js_testgroups = [g for g in testgroups if g not in py_testgroups] else: py_testgroups = py_test_group_names js_testgroups = all_js_groups() if not options.all: test_sections['parallel'].enabled = False c_js = [JSController(name) for name in js_testgroups] c_py = [PyTestController(name, options) for name in py_testgroups] controllers = c_py + c_js to_run = [c for c in controllers if c.will_run] not_run = [c for c in controllers if not c.will_run] return to_run, not_run def do_run(controller, buffer_output=True): """Setup and run a test controller. If buffer_output is True, no output is displayed, to avoid it appearing interleaved. In this case, the caller is responsible for displaying test output on failure. Returns ------- controller : TestController The same controller as passed in, as a convenience for using map() type APIs. exitcode : int The exit code of the test subprocess. Non-zero indicates failure. """ try: try: controller.setup() if not buffer_output: controller.print_extra_info() controller.launch(buffer_output=buffer_output) except Exception: import traceback traceback.print_exc() return controller, 1 # signal failure exitcode = controller.wait() return controller, exitcode except KeyboardInterrupt: return controller, -signal.SIGINT finally: controller.cleanup() def report(): """Return a string with a summary report of test-related variables.""" inf = get_sys_info() out = [] def _add(name, value): out.append((name, value)) _add('IPython version', inf['ipython_version']) _add('IPython commit', "{} ({})".format(inf['commit_hash'], inf['commit_source'])) _add('IPython package', compress_user(inf['ipython_path'])) _add('Python version', inf['sys_version'].replace('\n','')) _add('sys.executable', compress_user(inf['sys_executable'])) _add('Platform', inf['platform']) width = max(len(n) for (n,v) in out) out = ["{:<{width}}: {}\n".format(n, v, width=width) for (n,v) in out] avail = [] not_avail = [] for k, is_avail in have.items(): if is_avail: avail.append(k) else: not_avail.append(k) if avail: out.append('\nTools and libraries available at test time:\n') avail.sort() out.append(' ' + ' '.join(avail)+'\n') if not_avail: out.append('\nTools and libraries NOT available at test time:\n') not_avail.sort() out.append(' ' + ' '.join(not_avail)+'\n') return ''.join(out) def run_iptestall(options): """Run the entire IPython test suite by calling nose and trial. This function constructs :class:`IPTester` instances for all IPython modules and package and then runs each of them. This causes the modules and packages of IPython to be tested each in their own subprocess using nose. Parameters ---------- All parameters are passed as attributes of the options object. testgroups : list of str Run only these sections of the test suite. If empty, run all the available sections. fast : int or None Run the test suite in parallel, using n simultaneous processes. If None is passed, one process is used per CPU core. Default 1 (i.e. sequential) inc_slow : bool Include slow tests, like IPython.parallel. By default, these tests aren't run. xunit : bool Produce Xunit XML output. This is written to multiple foo.xunit.xml files. coverage : bool or str Measure code coverage from tests. True will store the raw coverage data, or pass 'html' or 'xml' to get reports. extra_args : list Extra arguments to pass to the test subprocesses, e.g. '-v' """ to_run, not_run = prepare_controllers(options) def justify(ltext, rtext, width=70, fill='-'): ltext += ' ' rtext = (' ' + rtext).rjust(width - len(ltext), fill) return ltext + rtext # Run all test runners, tracking execution time failed = [] t_start = time.time() print() if options.fast == 1: # This actually means sequential, i.e. with 1 job for controller in to_run: print('Test group:', controller.section) sys.stdout.flush() # Show in correct order when output is piped controller, res = do_run(controller, buffer_output=False) if res: failed.append(controller) if res == -signal.SIGINT: print("Interrupted") break print() else: # Run tests concurrently try: pool = multiprocessing.pool.ThreadPool(options.fast) for (controller, res) in pool.imap_unordered(do_run, to_run): res_string = 'OK' if res == 0 else 'FAILED' print(justify('Test group: ' + controller.section, res_string)) if res: controller.print_extra_info() print(bytes_to_str(controller.stdout)) failed.append(controller) if res == -signal.SIGINT: print("Interrupted") break except KeyboardInterrupt: return for controller in not_run: print(justify('Test group: ' + controller.section, 'NOT RUN')) t_end = time.time() t_tests = t_end - t_start nrunners = len(to_run) nfail = len(failed) # summarize results print('_'*70) print('Test suite completed for system with the following information:') print(report()) took = "Took %.3fs." % t_tests print('Status: ', end='') if not failed: print('OK (%d test groups).' % nrunners, took) else: # If anything went wrong, point out what command to rerun manually to # see the actual errors and individual summary failed_sections = [c.section for c in failed] print('ERROR - {} out of {} test groups failed ({}).'.format(nfail, nrunners, ', '.join(failed_sections)), took) print() print('You may wish to rerun these, with:') print(' iptest', *failed_sections) print() if options.coverage: from coverage import coverage cov = coverage(data_file='.coverage') cov.combine() cov.save() # Coverage HTML report if options.coverage == 'html': html_dir = 'ipy_htmlcov' shutil.rmtree(html_dir, ignore_errors=True) print("Writing HTML coverage report to %s/ ... " % html_dir, end="") sys.stdout.flush() # Custom HTML reporter to clean up module names. from coverage.html import HtmlReporter class CustomHtmlReporter(HtmlReporter): def find_code_units(self, morfs): super(CustomHtmlReporter, self).find_code_units(morfs) for cu in self.code_units: nameparts = cu.name.split(os.sep) if 'IPython' not in nameparts: continue ix = nameparts.index('IPython') cu.name = '.'.join(nameparts[ix:]) # Reimplement the html_report method with our custom reporter cov._harvest_data() cov.config.from_args(omit='*{0}tests{0}*'.format(os.sep), html_dir=html_dir, html_title='IPython test coverage', ) reporter = CustomHtmlReporter(cov, cov.config) reporter.report(None) print('done.') # Coverage XML report elif options.coverage == 'xml': cov.xml_report(outfile='ipy_coverage.xml') if failed: # Ensure that our exit code indicates failure sys.exit(1) argparser = argparse.ArgumentParser(description='Run IPython test suite') argparser.add_argument('testgroups', nargs='*', help='Run specified groups of tests. If omitted, run ' 'all tests.') argparser.add_argument('--all', action='store_true', help='Include slow tests not run by default.') argparser.add_argument('-j', '--fast', nargs='?', const=None, default=1, type=int, help='Run test sections in parallel. This starts as many ' 'processes as you have cores, or you can specify a number.') argparser.add_argument('--xunit', action='store_true', help='Produce Xunit XML results') argparser.add_argument('--coverage', nargs='?', const=True, default=False, help="Measure test coverage. Specify 'html' or " "'xml' to get reports.") argparser.add_argument('--subproc-streams', default='capture', help="What to do with stdout/stderr from subprocesses. " "'capture' (default), 'show' and 'discard' are the options.") def default_options(): """Get an argparse Namespace object with the default arguments, to pass to :func:`run_iptestall`. """ options = argparser.parse_args([]) options.extra_args = [] return options def main(): # iptest doesn't work correctly if the working directory is the # root of the IPython source tree. Tell the user to avoid # frustration. if os.path.exists(os.path.join(os.getcwd(), 'IPython', 'testing', '__main__.py')): print("Don't run iptest from the IPython source directory", file=sys.stderr) sys.exit(1) # Arguments after -- should be passed through to nose. Argparse treats # everything after -- as regular positional arguments, so we separate them # first. try: ix = sys.argv.index('--') except ValueError: to_parse = sys.argv[1:] extra_args = [] else: to_parse = sys.argv[1:ix] extra_args = sys.argv[ix+1:] options = argparser.parse_args(to_parse) options.extra_args = extra_args run_iptestall(options) if __name__ == '__main__': main()