4 lit - LLVM Integrated Tester.
6 See lit.pod for more information.
9 import math, os, platform, random, re, sys, time, threading, traceback
15 from TestingConfig import TestingConfig
19 # Configuration files to look for when discovering test suites. These can be
20 # overridden with --config-prefix.
22 # FIXME: Rename to 'config.lit', 'site.lit', and 'local.lit' ?
23 gConfigName = 'lit.cfg'
24 gSiteConfigName = 'lit.site.cfg'
26 kLocalConfigName = 'lit.local.cfg'
28 class TestingProgressDisplay:
29 def __init__(self, opts, numTests, progressBar=None):
31 self.numTests = numTests
33 self.lock = threading.Lock()
34 self.progressBar = progressBar
37 def update(self, test):
38 # Avoid locking overhead in quiet mode
39 if self.opts.quiet and not test.result.isFailure:
46 self.handleUpdate(test)
52 self.progressBar.clear()
55 elif self.opts.succinct:
56 sys.stdout.write('\n')
58 def handleUpdate(self, test):
61 self.progressBar.update(float(self.completed)/self.numTests,
64 if self.opts.succinct and not test.result.isFailure:
68 self.progressBar.clear()
70 print '%s: %s (%d of %d)' % (test.result.name, test.getFullName(),
71 self.completed, self.numTests)
73 if test.result.isFailure and self.opts.showOutput:
74 print "%s TEST '%s' FAILED %s" % ('*'*20, test.getFullName(),
82 def __init__(self, tests, maxTime):
83 self.maxTime = maxTime
84 self.iter = iter(tests)
85 self.lock = threading.Lock()
86 self.startTime = time.time()
89 # Check if we have run out of time.
90 if self.maxTime is not None:
91 if time.time() - self.startTime > self.maxTime:
94 # Otherwise take the next test.
97 item = self.iter.next()
103 class Tester(threading.Thread):
104 def __init__(self, litConfig, provider, display):
105 threading.Thread.__init__(self)
106 self.litConfig = litConfig
107 self.provider = provider
108 self.display = display
112 item = self.provider.get()
117 def runTest(self, test):
119 startTime = time.time()
121 result, output = test.config.test_format.execute(test,
123 except KeyboardInterrupt:
124 # This is a sad hack. Unfortunately subprocess goes
125 # bonkers with ctrl-c and we start forking merrily.
126 print '\nCtrl-C detected, goodbye.'
129 if self.litConfig.debug:
131 result = Test.UNRESOLVED
132 output = 'Exception during script execution:\n'
133 output += traceback.format_exc()
135 elapsed = time.time() - startTime
137 test.setResult(result, output, elapsed)
138 self.display.update(test)
140 def dirContainsTestSuite(path):
141 cfgpath = os.path.join(path, gSiteConfigName)
142 if os.path.exists(cfgpath):
144 cfgpath = os.path.join(path, gConfigName)
145 if os.path.exists(cfgpath):
148 def getTestSuite(item, litConfig, cache):
149 """getTestSuite(item, litConfig, cache) -> (suite, relative_path)
151 Find the test suite containing @arg item.
153 @retval (None, ...) - Indicates no test suite contains @arg item.
154 @retval (suite, relative_path) - The suite that @arg item is in, and its
155 relative path inside that suite.
158 # Check for a site config or a lit config.
159 cfgpath = dirContainsTestSuite(path)
161 # If we didn't find a config file, keep looking.
163 parent,base = os.path.split(path)
167 ts, relative = search(parent)
168 return (ts, relative + (base,))
170 # We found a config file, load it.
172 litConfig.note('loading suite config %r' % cfgpath)
174 cfg = TestingConfig.frompath(cfgpath, None, litConfig, mustExist = True)
175 source_root = os.path.realpath(cfg.test_source_root or path)
176 exec_root = os.path.realpath(cfg.test_exec_root or path)
177 return Test.TestSuite(cfg.name, source_root, exec_root, cfg), ()
180 # Check for an already instantiated test suite.
181 res = cache.get(path)
183 cache[path] = res = search1(path)
186 # Canonicalize the path.
187 item = os.path.realpath(item)
189 # Skip files and virtual components.
191 while not os.path.isdir(item):
192 parent,base = os.path.split(item)
195 components.append(base)
199 ts, relative = search(item)
200 return ts, tuple(relative + tuple(components))
202 def getLocalConfig(ts, path_in_suite, litConfig, cache):
203 def search1(path_in_suite):
204 # Get the parent config.
205 if not path_in_suite:
208 parent = search(path_in_suite[:-1])
210 # Load the local configuration.
211 source_path = ts.getSourcePath(path_in_suite)
212 cfgpath = os.path.join(source_path, kLocalConfigName)
214 litConfig.note('loading local config %r' % cfgpath)
215 return TestingConfig.frompath(cfgpath, parent, litConfig,
217 config = parent.clone(cfgpath))
219 def search(path_in_suite):
220 key = (ts, path_in_suite)
223 cache[key] = res = search1(path_in_suite)
226 return search(path_in_suite)
228 def getTests(path, litConfig, testSuiteCache, localConfigCache):
229 # Find the test suite for this input and its relative path.
230 ts,path_in_suite = getTestSuite(path, litConfig, testSuiteCache)
232 litConfig.warning('unable to find test suite for %r' % path)
236 litConfig.note('resolved input %r to %r::%r' % (path, ts.name,
239 return ts, getTestsInSuite(ts, path_in_suite, litConfig,
240 testSuiteCache, localConfigCache)
242 def getTestsInSuite(ts, path_in_suite, litConfig,
243 testSuiteCache, localConfigCache):
244 # Check that the source path exists (errors here are reported by the
246 source_path = ts.getSourcePath(path_in_suite)
247 if not os.path.exists(source_path):
250 # Check if the user named a test directly.
251 if not os.path.isdir(source_path):
252 lc = getLocalConfig(ts, path_in_suite[:-1], litConfig, localConfigCache)
253 yield Test.Test(ts, path_in_suite, lc)
256 # Otherwise we have a directory to search for tests, start by getting the
257 # local configuration.
258 lc = getLocalConfig(ts, path_in_suite, litConfig, localConfigCache)
261 if lc.test_format is not None:
262 for res in lc.test_format.getTestsInDirectory(ts, path_in_suite,
266 # Search subdirectories.
267 for filename in os.listdir(source_path):
268 # FIXME: This doesn't belong here?
269 if filename in ('Output', '.svn') or filename in lc.excludes:
272 # Ignore non-directories.
273 file_sourcepath = os.path.join(source_path, filename)
274 if not os.path.isdir(file_sourcepath):
277 # Check for nested test suites, first in the execpath in case there is a
278 # site configuration and then in the source path.
279 file_execpath = ts.getExecPath(path_in_suite + (filename,))
280 if dirContainsTestSuite(file_execpath):
281 sub_ts, subiter = getTests(file_execpath, litConfig,
282 testSuiteCache, localConfigCache)
283 elif dirContainsTestSuite(file_sourcepath):
284 sub_ts, subiter = getTests(file_sourcepath, litConfig,
285 testSuiteCache, localConfigCache)
287 # Otherwise, continue loading from inside this test suite.
288 subiter = getTestsInSuite(ts, path_in_suite + (filename,),
289 litConfig, testSuiteCache,
298 litConfig.warning('test suite %r contained no tests' % sub_ts.name)
300 def runTests(numThreads, litConfig, provider, display):
301 # If only using one testing thread, don't use threads at all; this lets us
302 # profile, among other things.
304 t = Tester(litConfig, provider, display)
308 # Otherwise spin up the testing threads and wait for them to finish.
309 testers = [Tester(litConfig, provider, display)
310 for i in range(numThreads)]
316 except KeyboardInterrupt:
319 def load_test_suite(inputs):
322 # Create the global config object.
323 litConfig = LitConfig.LitConfig(progname = 'lit',
327 valgrindLeakCheck = False,
330 ignoreStdErr = False,
332 isWindows = (platform.system()=='Windows'),
335 # Load the tests from the inputs.
338 localConfigCache = {}
341 tests.extend(getTests(input, litConfig,
342 testSuiteCache, localConfigCache)[1])
343 if prev == len(tests):
344 litConfig.warning('input %r contained no tests' % input)
346 # If there were any errors during test discovery, exit now.
347 if litConfig.numErrors:
348 print >>sys.stderr, '%d errors, exiting.' % litConfig.numErrors
351 # Return a unittest test suite which just runs the tests in order.
352 def get_test_fn(test):
353 return unittest.FunctionTestCase(
354 lambda: test.config.test_format.execute(
356 description = test.getFullName())
358 from LitTestCase import LitTestCase
359 return unittest.TestSuite([LitTestCase(test, litConfig) for test in tests])
361 def main(builtinParameters = {}): # Bump the GIL check interval, its more important to get any one thread to a
362 # blocking operation (hopefully exec) than to try and unblock other threads.
364 # FIXME: This is a hack.
366 sys.setcheckinterval(1000)
369 from optparse import OptionParser, OptionGroup
370 parser = OptionParser("usage: %prog [options] {file-or-path}")
372 parser.add_option("-j", "--threads", dest="numThreads", metavar="N",
373 help="Number of testing threads",
374 type=int, action="store", default=None)
375 parser.add_option("", "--config-prefix", dest="configPrefix",
376 metavar="NAME", help="Prefix for 'lit' config files",
377 action="store", default=None)
378 parser.add_option("", "--param", dest="userParameters",
380 help="Add 'NAME' = 'VAL' to the user defined parameters",
381 type=str, action="append", default=[])
383 group = OptionGroup(parser, "Output Format")
384 # FIXME: I find these names very confusing, although I like the
386 group.add_option("-q", "--quiet", dest="quiet",
387 help="Suppress no error output",
388 action="store_true", default=False)
389 group.add_option("-s", "--succinct", dest="succinct",
390 help="Reduce amount of output",
391 action="store_true", default=False)
392 group.add_option("-v", "--verbose", dest="showOutput",
393 help="Show all test output",
394 action="store_true", default=False)
395 group.add_option("", "--no-progress-bar", dest="useProgressBar",
396 help="Do not use curses based progress bar",
397 action="store_false", default=True)
398 parser.add_option_group(group)
400 group = OptionGroup(parser, "Test Execution")
401 group.add_option("", "--path", dest="path",
402 help="Additional paths to add to testing environment",
403 action="append", type=str, default=[])
404 group.add_option("", "--vg", dest="useValgrind",
405 help="Run tests under valgrind",
406 action="store_true", default=False)
407 group.add_option("", "--vg-leak", dest="valgrindLeakCheck",
408 help="Check for memory leaks under valgrind",
409 action="store_true", default=False)
410 group.add_option("", "--vg-arg", dest="valgrindArgs", metavar="ARG",
411 help="Specify an extra argument for valgrind",
412 type=str, action="append", default=[])
413 group.add_option("", "--time-tests", dest="timeTests",
414 help="Track elapsed wall time for each test",
415 action="store_true", default=False)
416 group.add_option("", "--no-execute", dest="noExecute",
417 help="Don't execute any tests (assume PASS)",
418 action="store_true", default=False)
419 parser.add_option_group(group)
421 group = OptionGroup(parser, "Test Selection")
422 group.add_option("", "--max-tests", dest="maxTests", metavar="N",
423 help="Maximum number of tests to run",
424 action="store", type=int, default=None)
425 group.add_option("", "--max-time", dest="maxTime", metavar="N",
426 help="Maximum time to spend testing (in seconds)",
427 action="store", type=float, default=None)
428 group.add_option("", "--shuffle", dest="shuffle",
429 help="Run tests in random order",
430 action="store_true", default=False)
431 group.add_option("", "--filter", dest="filter", metavar="EXPRESSION",
432 help=("Only run tests with paths matching the given "
433 "regular expression"),
434 action="store", default=None)
435 parser.add_option_group(group)
437 group = OptionGroup(parser, "Debug and Experimental Options")
438 group.add_option("", "--debug", dest="debug",
439 help="Enable debugging (for 'lit' development)",
440 action="store_true", default=False)
441 group.add_option("", "--show-suites", dest="showSuites",
442 help="Show discovered test suites",
443 action="store_true", default=False)
444 group.add_option("", "--repeat", dest="repeatTests", metavar="N",
445 help="Repeat tests N times (for timing)",
446 action="store", default=None, type=int)
447 parser.add_option_group(group)
449 (opts, args) = parser.parse_args()
452 parser.error('No inputs specified')
454 if opts.configPrefix is not None:
455 global gConfigName, gSiteConfigName, kLocalConfigName
456 gConfigName = '%s.cfg' % opts.configPrefix
457 gSiteConfigName = '%s.site.cfg' % opts.configPrefix
458 kLocalConfigName = '%s.local.cfg' % opts.configPrefix
460 if opts.numThreads is None:
461 # Python <2.5 has a race condition causing lit to always fail with numThreads>1
462 # http://bugs.python.org/issue1731717
463 # I haven't seen this bug occur with 2.5.2 and later, so only enable multiple
464 # threads by default there.
465 if sys.hexversion >= 0x2050200:
466 opts.numThreads = Util.detectCPUs()
472 # Create the user defined parameters.
473 userParams = dict(builtinParameters)
474 for entry in opts.userParameters:
478 name,val = entry.split('=', 1)
479 userParams[name] = val
481 # Create the global config object.
482 litConfig = LitConfig.LitConfig(progname = os.path.basename(sys.argv[0]),
485 useValgrind = opts.useValgrind,
486 valgrindLeakCheck = opts.valgrindLeakCheck,
487 valgrindArgs = opts.valgrindArgs,
488 noExecute = opts.noExecute,
489 ignoreStdErr = False,
491 isWindows = (platform.system()=='Windows'),
494 # Expand '@...' form in inputs.
497 if os.path.exists(input) or not input.startswith('@'):
498 actual_inputs.append(input)
505 actual_inputs.append(ln)
510 # Load the tests from the inputs.
513 localConfigCache = {}
514 for input in actual_inputs:
516 tests.extend(getTests(input, litConfig,
517 testSuiteCache, localConfigCache)[1])
518 if prev == len(tests):
519 litConfig.warning('input %r contained no tests' % input)
521 # If there were any errors during test discovery, exit now.
522 if litConfig.numErrors:
523 print >>sys.stderr, '%d errors, exiting.' % litConfig.numErrors
527 suitesAndTests = dict([(ts,[])
528 for ts,_ in testSuiteCache.values()
531 suitesAndTests[t.suite].append(t)
533 print '-- Test Suites --'
534 suitesAndTests = suitesAndTests.items()
535 suitesAndTests.sort(key = lambda (ts,_): ts.name)
536 for ts,ts_tests in suitesAndTests:
537 print ' %s - %d tests' %(ts.name, len(ts_tests))
538 print ' Source Root: %s' % ts.source_root
539 print ' Exec Root : %s' % ts.exec_root
541 # Select and order the tests.
542 numTotalTests = len(tests)
544 # First, select based on the filter expression if given.
547 rex = re.compile(opts.filter)
549 parser.error("invalid regular expression for --filter: %r" % (
551 tests = [t for t in tests
552 if rex.search(t.getFullName())]
554 # Then select the order.
556 random.shuffle(tests)
558 tests.sort(key = lambda t: t.getFullName())
560 # Finally limit the number of tests, if desired.
561 if opts.maxTests is not None:
562 tests = tests[:opts.maxTests]
564 # Don't create more threads than tests.
565 opts.numThreads = min(len(tests), opts.numThreads)
568 if len(tests) != numTotalTests:
569 extra = ' of %d' % numTotalTests
570 header = '-- Testing: %d%s tests, %d threads --'%(len(tests),extra,
574 tests = [t.copyWithIndex(i)
576 for i in range(opts.repeatTests)]
580 if opts.succinct and opts.useProgressBar:
582 tc = ProgressBar.TerminalController()
583 progressBar = ProgressBar.ProgressBar(tc, header)
586 progressBar = ProgressBar.SimpleProgressBar('Testing: ')
590 startTime = time.time()
591 display = TestingProgressDisplay(opts, len(tests), progressBar)
592 provider = TestProvider(tests, opts.maxTime)
593 runTests(opts.numThreads, litConfig, provider, display)
597 print 'Testing Time: %.2fs'%(time.time() - startTime)
599 # Update results for any tests which weren't run.
602 t.setResult(Test.UNRESOLVED, '', 0.0)
604 # List test results organized by kind.
608 if t.result not in byCode:
609 byCode[t.result] = []
610 byCode[t.result].append(t)
611 if t.result.isFailure:
614 # FIXME: Show unresolved and (optionally) unsupported tests.
615 for title,code in (('Unexpected Passing Tests', Test.XPASS),
616 ('Failing Tests', Test.FAIL)):
617 elts = byCode.get(code)
621 print '%s (%d):' % (title, len(elts))
623 print ' %s' % t.getFullName()
627 # Collate, in case we repeated tests.
630 key = t.getFullName()
631 times[key] = times.get(key, 0.) + t.elapsed
633 byTime = list(times.items())
634 byTime.sort(key = lambda (name,elapsed): elapsed)
636 Util.printHistogram(byTime, title='Tests')
638 for name,code in (('Expected Passes ', Test.PASS),
639 ('Expected Failures ', Test.XFAIL),
640 ('Unsupported Tests ', Test.UNSUPPORTED),
641 ('Unresolved Tests ', Test.UNRESOLVED),
642 ('Unexpected Passes ', Test.XPASS),
643 ('Unexpected Failures', Test.FAIL),):
644 if opts.quiet and not code.isFailure:
646 N = len(byCode.get(code,[]))
648 print ' %s: %d' % (name,N)
650 # If we encountered any additional errors, exit abnormally.
651 if litConfig.numErrors:
652 print >>sys.stderr, '\n%d error(s), exiting.' % litConfig.numErrors
655 # Warn about warnings.
656 if litConfig.numWarnings:
657 print >>sys.stderr, '\n%d warning(s) in tests.' % litConfig.numWarnings
663 if __name__=='__main__':