Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame^] | 1 | #!/usr/bin/env python3 |
| 2 | # |
| 3 | # Modified for use in OE by Richard Purdie, 2018 |
| 4 | # |
| 5 | # Modified by: Corey Goldberg, 2013 |
| 6 | # License: GPLv2+ |
| 7 | # |
| 8 | # Original code from: |
| 9 | # Bazaar (bzrlib.tests.__init__.py, v2.6, copied Jun 01 2013) |
| 10 | # Copyright (C) 2005-2011 Canonical Ltd |
| 11 | # License: GPLv2+ |
| 12 | |
| 13 | import os |
| 14 | import sys |
| 15 | import traceback |
| 16 | import unittest |
| 17 | import subprocess |
| 18 | import testtools |
| 19 | import threading |
| 20 | import time |
| 21 | import io |
| 22 | |
| 23 | from queue import Queue |
| 24 | from itertools import cycle |
| 25 | from subunit import ProtocolTestCase, TestProtocolClient |
| 26 | from subunit.test_results import AutoTimingTestResultDecorator |
| 27 | from testtools import ThreadsafeForwardingResult, iterate_tests |
| 28 | |
| 29 | import bb.utils |
| 30 | import oe.path |
| 31 | |
| 32 | _all__ = [ |
| 33 | 'ConcurrentTestSuite', |
| 34 | 'fork_for_tests', |
| 35 | 'partition_tests', |
| 36 | ] |
| 37 | |
| 38 | # |
| 39 | # Patch the version from testtools to allow access to _test_start and allow |
| 40 | # computation of timing information and threading progress |
| 41 | # |
| 42 | class BBThreadsafeForwardingResult(ThreadsafeForwardingResult): |
| 43 | |
| 44 | def __init__(self, target, semaphore, threadnum, totalinprocess, totaltests): |
| 45 | super(BBThreadsafeForwardingResult, self).__init__(target, semaphore) |
| 46 | self.threadnum = threadnum |
| 47 | self.totalinprocess = totalinprocess |
| 48 | self.totaltests = totaltests |
| 49 | |
| 50 | def _add_result_with_semaphore(self, method, test, *args, **kwargs): |
| 51 | self.semaphore.acquire() |
| 52 | try: |
| 53 | self.result.starttime[test.id()] = self._test_start.timestamp() |
| 54 | self.result.threadprogress[self.threadnum].append(test.id()) |
| 55 | totalprogress = sum(len(x) for x in self.result.threadprogress.values()) |
| 56 | self.result.progressinfo[test.id()] = "%s: %s/%s %s/%s (%ss) (%s)" % ( |
| 57 | self.threadnum, |
| 58 | len(self.result.threadprogress[self.threadnum]), |
| 59 | self.totalinprocess, |
| 60 | totalprogress, |
| 61 | self.totaltests, |
| 62 | "{0:.2f}".format(time.time()-self._test_start.timestamp()), |
| 63 | test.id()) |
| 64 | finally: |
| 65 | self.semaphore.release() |
| 66 | super(BBThreadsafeForwardingResult, self)._add_result_with_semaphore(method, test, *args, **kwargs) |
| 67 | |
| 68 | # |
| 69 | # A dummy structure to add to io.StringIO so that the .buffer object |
| 70 | # is available and accepts writes. This allows unittest with buffer=True |
| 71 | # to interact ok with subunit which wants to access sys.stdout.buffer. |
| 72 | # |
| 73 | class dummybuf(object): |
| 74 | def __init__(self, parent): |
| 75 | self.p = parent |
| 76 | def write(self, data): |
| 77 | self.p.write(data.decode("utf-8")) |
| 78 | |
| 79 | # |
| 80 | # Taken from testtools.ConncurrencyTestSuite but modified for OE use |
| 81 | # |
| 82 | class ConcurrentTestSuite(unittest.TestSuite): |
| 83 | |
| 84 | def __init__(self, suite, processes): |
| 85 | super(ConcurrentTestSuite, self).__init__([suite]) |
| 86 | self.processes = processes |
| 87 | |
| 88 | def run(self, result): |
| 89 | tests, totaltests = fork_for_tests(self.processes, self) |
| 90 | try: |
| 91 | threads = {} |
| 92 | queue = Queue() |
| 93 | semaphore = threading.Semaphore(1) |
| 94 | result.threadprogress = {} |
| 95 | for i, (test, testnum) in enumerate(tests): |
| 96 | result.threadprogress[i] = [] |
| 97 | process_result = BBThreadsafeForwardingResult(result, semaphore, i, testnum, totaltests) |
| 98 | # Force buffering of stdout/stderr so the console doesn't get corrupted by test output |
| 99 | # as per default in parent code |
| 100 | process_result.buffer = True |
| 101 | # We have to add a buffer object to stdout to keep subunit happy |
| 102 | process_result._stderr_buffer = io.StringIO() |
| 103 | process_result._stderr_buffer.buffer = dummybuf(process_result._stderr_buffer) |
| 104 | process_result._stdout_buffer = io.StringIO() |
| 105 | process_result._stdout_buffer.buffer = dummybuf(process_result._stdout_buffer) |
| 106 | reader_thread = threading.Thread( |
| 107 | target=self._run_test, args=(test, process_result, queue)) |
| 108 | threads[test] = reader_thread, process_result |
| 109 | reader_thread.start() |
| 110 | while threads: |
| 111 | finished_test = queue.get() |
| 112 | threads[finished_test][0].join() |
| 113 | del threads[finished_test] |
| 114 | except: |
| 115 | for thread, process_result in threads.values(): |
| 116 | process_result.stop() |
| 117 | raise |
| 118 | finally: |
| 119 | for test in tests: |
| 120 | test[0]._stream.close() |
| 121 | |
| 122 | def _run_test(self, test, process_result, queue): |
| 123 | try: |
| 124 | try: |
| 125 | test.run(process_result) |
| 126 | except Exception: |
| 127 | # The run logic itself failed |
| 128 | case = testtools.ErrorHolder( |
| 129 | "broken-runner", |
| 130 | error=sys.exc_info()) |
| 131 | case.run(process_result) |
| 132 | finally: |
| 133 | queue.put(test) |
| 134 | |
| 135 | def removebuilddir(d): |
| 136 | delay = 5 |
| 137 | while delay and os.path.exists(d + "/bitbake.lock"): |
| 138 | time.sleep(1) |
| 139 | delay = delay - 1 |
| 140 | bb.utils.prunedir(d) |
| 141 | |
| 142 | def fork_for_tests(concurrency_num, suite): |
| 143 | result = [] |
| 144 | test_blocks = partition_tests(suite, concurrency_num) |
| 145 | # Clear the tests from the original suite so it doesn't keep them alive |
| 146 | suite._tests[:] = [] |
| 147 | totaltests = sum(len(x) for x in test_blocks) |
| 148 | for process_tests in test_blocks: |
| 149 | numtests = len(process_tests) |
| 150 | process_suite = unittest.TestSuite(process_tests) |
| 151 | # Also clear each split list so new suite has only reference |
| 152 | process_tests[:] = [] |
| 153 | c2pread, c2pwrite = os.pipe() |
| 154 | # Clear buffers before fork to avoid duplicate output |
| 155 | sys.stdout.flush() |
| 156 | sys.stderr.flush() |
| 157 | pid = os.fork() |
| 158 | if pid == 0: |
| 159 | ourpid = os.getpid() |
| 160 | try: |
| 161 | newbuilddir = None |
| 162 | stream = os.fdopen(c2pwrite, 'wb', 1) |
| 163 | os.close(c2pread) |
| 164 | |
| 165 | # Create a new separate BUILDDIR for each group of tests |
| 166 | if 'BUILDDIR' in os.environ: |
| 167 | builddir = os.environ['BUILDDIR'] |
| 168 | newbuilddir = builddir + "-st-" + str(ourpid) |
| 169 | selftestdir = os.path.abspath(builddir + "/../meta-selftest") |
| 170 | newselftestdir = newbuilddir + "/meta-selftest" |
| 171 | |
| 172 | bb.utils.mkdirhier(newbuilddir) |
| 173 | oe.path.copytree(builddir + "/conf", newbuilddir + "/conf") |
| 174 | oe.path.copytree(builddir + "/cache", newbuilddir + "/cache") |
| 175 | oe.path.copytree(selftestdir, newselftestdir) |
| 176 | |
| 177 | for e in os.environ: |
| 178 | if builddir in os.environ[e]: |
| 179 | os.environ[e] = os.environ[e].replace(builddir, newbuilddir) |
| 180 | |
| 181 | subprocess.check_output("git init; git add *; git commit -a -m 'initial'", cwd=newselftestdir, shell=True) |
| 182 | |
| 183 | # Tried to used bitbake-layers add/remove but it requires recipe parsing and hence is too slow |
| 184 | subprocess.check_output("sed %s/conf/bblayers.conf -i -e 's#%s#%s#g'" % (newbuilddir, selftestdir, newselftestdir), cwd=newbuilddir, shell=True) |
| 185 | |
| 186 | os.chdir(newbuilddir) |
| 187 | |
| 188 | for t in process_suite: |
| 189 | if not hasattr(t, "tc"): |
| 190 | continue |
| 191 | cp = t.tc.config_paths |
| 192 | for p in cp: |
| 193 | if selftestdir in cp[p] and newselftestdir not in cp[p]: |
| 194 | cp[p] = cp[p].replace(selftestdir, newselftestdir) |
| 195 | if builddir in cp[p] and newbuilddir not in cp[p]: |
| 196 | cp[p] = cp[p].replace(builddir, newbuilddir) |
| 197 | |
| 198 | # Leave stderr and stdout open so we can see test noise |
| 199 | # Close stdin so that the child goes away if it decides to |
| 200 | # read from stdin (otherwise its a roulette to see what |
| 201 | # child actually gets keystrokes for pdb etc). |
| 202 | newsi = os.open(os.devnull, os.O_RDWR) |
| 203 | os.dup2(newsi, sys.stdin.fileno()) |
| 204 | |
| 205 | subunit_client = TestProtocolClient(stream) |
| 206 | # Force buffering of stdout/stderr so the console doesn't get corrupted by test output |
| 207 | # as per default in parent code |
| 208 | subunit_client.buffer = True |
| 209 | subunit_result = AutoTimingTestResultDecorator(subunit_client) |
| 210 | process_suite.run(subunit_result) |
| 211 | if ourpid != os.getpid(): |
| 212 | os._exit(0) |
| 213 | if newbuilddir: |
| 214 | removebuilddir(newbuilddir) |
| 215 | except: |
| 216 | # Don't do anything with process children |
| 217 | if ourpid != os.getpid(): |
| 218 | os._exit(1) |
| 219 | # Try and report traceback on stream, but exit with error |
| 220 | # even if stream couldn't be created or something else |
| 221 | # goes wrong. The traceback is formatted to a string and |
| 222 | # written in one go to avoid interleaving lines from |
| 223 | # multiple failing children. |
| 224 | try: |
| 225 | stream.write(traceback.format_exc().encode('utf-8')) |
| 226 | except: |
| 227 | sys.stderr.write(traceback.format_exc()) |
| 228 | finally: |
| 229 | if newbuilddir: |
| 230 | removebuilddir(newbuilddir) |
| 231 | stream.flush() |
| 232 | os._exit(1) |
| 233 | stream.flush() |
| 234 | os._exit(0) |
| 235 | else: |
| 236 | os.close(c2pwrite) |
| 237 | stream = os.fdopen(c2pread, 'rb', 1) |
| 238 | test = ProtocolTestCase(stream) |
| 239 | result.append((test, numtests)) |
| 240 | return result, totaltests |
| 241 | |
| 242 | def partition_tests(suite, count): |
| 243 | # Keep tests from the same class together but allow tests from modules |
| 244 | # to go to different processes to aid parallelisation. |
| 245 | modules = {} |
| 246 | for test in iterate_tests(suite): |
| 247 | m = test.__module__ + "." + test.__class__.__name__ |
| 248 | if m not in modules: |
| 249 | modules[m] = [] |
| 250 | modules[m].append(test) |
| 251 | |
| 252 | # Simply divide the test blocks between the available processes |
| 253 | partitions = [list() for _ in range(count)] |
| 254 | for partition, m in zip(cycle(partitions), modules): |
| 255 | partition.extend(modules[m]) |
| 256 | |
| 257 | # No point in empty threads so drop them |
| 258 | return [p for p in partitions if p] |
| 259 | |