mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-26 14:22:01 +00:00
273 lines
11 KiB
Python
273 lines
11 KiB
Python
import math
|
|
import mozinfo
|
|
|
|
|
|
class Bisect(object):
|
|
|
|
"Class for creating, bisecting and summarizing for --bisect-chunk option."
|
|
|
|
def __init__(self, harness):
|
|
super(Bisect, self).__init__()
|
|
self.summary = []
|
|
self.contents = {}
|
|
self.testRoot = harness.testRoot
|
|
self.testRootAbs = harness.testRootAbs
|
|
self.repeat = 10
|
|
self.failcount = 0
|
|
self.max_failures = 3
|
|
|
|
def setup(self, tests):
|
|
"This method is used to initialize various variables that are required for test bisection"
|
|
status = 0
|
|
self.contents.clear()
|
|
# We need totalTests key in contents for sanity check
|
|
self.contents['totalTests'] = tests
|
|
self.contents['tests'] = tests
|
|
self.contents['loop'] = 0
|
|
return status
|
|
|
|
def reset(self, expectedError, result):
|
|
"This method is used to initialize self.expectedError and self.result for each loop in runtests."
|
|
self.expectedError = expectedError
|
|
self.result = result
|
|
|
|
def get_tests_for_bisection(self, options, tests):
|
|
"Make a list of tests for bisection from a given list of tests"
|
|
bisectlist = []
|
|
for test in tests:
|
|
bisectlist.append(test)
|
|
if test.endswith(options.bisectChunk):
|
|
break
|
|
|
|
return bisectlist
|
|
|
|
def pre_test(self, options, tests, status):
|
|
"This method is used to call other methods for setting up variables and getting the list of tests for bisection."
|
|
if options.bisectChunk == "default":
|
|
return tests
|
|
# The second condition in 'if' is required to verify that the failing
|
|
# test is the last one.
|
|
elif 'loop' not in self.contents or not self.contents['tests'][-1].endswith(options.bisectChunk):
|
|
tests = self.get_tests_for_bisection(options, tests)
|
|
status = self.setup(tests)
|
|
|
|
return self.next_chunk_binary(options, status)
|
|
|
|
def post_test(self, options, expectedError, result):
|
|
"This method is used to call other methods to summarize results and check whether a sanity check is done or not."
|
|
self.reset(expectedError, result)
|
|
status = self.summarize_chunk(options)
|
|
# Check whether sanity check has to be done. Also it is necessary to check whether options.bisectChunk is present
|
|
# in self.expectedError as we do not want to run if it is "default".
|
|
if status == -1 and options.bisectChunk in self.expectedError:
|
|
# In case we have a debug build, we don't want to run a sanity
|
|
# check, will take too much time.
|
|
if mozinfo.info['debug']:
|
|
return status
|
|
|
|
testBleedThrough = self.contents['testsToRun'][0]
|
|
tests = self.contents['totalTests']
|
|
tests.remove(testBleedThrough)
|
|
# To make sure that the failing test is dependent on some other
|
|
# test.
|
|
if options.bisectChunk in testBleedThrough:
|
|
return status
|
|
|
|
status = self.setup(tests)
|
|
self.summary.append("Sanity Check:")
|
|
|
|
return status
|
|
|
|
def next_chunk_reverse(self, options, status):
|
|
"This method is used to bisect the tests in a reverse search fashion."
|
|
|
|
# Base Cases.
|
|
if self.contents['loop'] <= 1:
|
|
self.contents['testsToRun'] = self.contents['tests']
|
|
if self.contents['loop'] == 1:
|
|
self.contents['testsToRun'] = [self.contents['tests'][-1]]
|
|
self.contents['loop'] += 1
|
|
return self.contents['testsToRun']
|
|
|
|
if 'result' in self.contents:
|
|
if self.contents['result'] == "PASS":
|
|
chunkSize = self.contents['end'] - self.contents['start']
|
|
self.contents['end'] = self.contents['start'] - 1
|
|
self.contents['start'] = self.contents['end'] - chunkSize
|
|
|
|
# self.contents['result'] will be expected error only if it fails.
|
|
elif self.contents['result'] == "FAIL":
|
|
self.contents['tests'] = self.contents['testsToRun']
|
|
status = 1 # for initializing
|
|
|
|
# initialize
|
|
if status:
|
|
totalTests = len(self.contents['tests'])
|
|
chunkSize = int(math.ceil(totalTests / 10.0))
|
|
self.contents['start'] = totalTests - chunkSize - 1
|
|
self.contents['end'] = totalTests - 2
|
|
|
|
start = self.contents['start']
|
|
end = self.contents['end'] + 1
|
|
self.contents['testsToRun'] = self.contents['tests'][start:end]
|
|
self.contents['testsToRun'].append(self.contents['tests'][-1])
|
|
self.contents['loop'] += 1
|
|
|
|
return self.contents['testsToRun']
|
|
|
|
def next_chunk_binary(self, options, status):
|
|
"This method is used to bisect the tests in a binary search fashion."
|
|
|
|
# Base cases.
|
|
if self.contents['loop'] <= 1:
|
|
self.contents['testsToRun'] = self.contents['tests']
|
|
if self.contents['loop'] == 1:
|
|
self.contents['testsToRun'] = [self.contents['tests'][-1]]
|
|
self.contents['loop'] += 1
|
|
return self.contents['testsToRun']
|
|
|
|
# Initialize the contents dict.
|
|
if status:
|
|
totalTests = len(self.contents['tests'])
|
|
self.contents['start'] = 0
|
|
self.contents['end'] = totalTests - 2
|
|
|
|
mid = (self.contents['start'] + self.contents['end']) / 2
|
|
if 'result' in self.contents:
|
|
if self.contents['result'] == "PASS":
|
|
self.contents['end'] = mid
|
|
|
|
elif self.contents['result'] == "FAIL":
|
|
self.contents['start'] = mid + 1
|
|
|
|
mid = (self.contents['start'] + self.contents['end']) / 2
|
|
start = mid + 1
|
|
end = self.contents['end'] + 1
|
|
self.contents['testsToRun'] = self.contents['tests'][start:end]
|
|
if not self.contents['testsToRun']:
|
|
self.contents['testsToRun'].append(self.contents['tests'][mid])
|
|
self.contents['testsToRun'].append(self.contents['tests'][-1])
|
|
self.contents['loop'] += 1
|
|
|
|
return self.contents['testsToRun']
|
|
|
|
def summarize_chunk(self, options):
|
|
"This method is used summarize the results after the list of tests is run."
|
|
if options.bisectChunk == "default":
|
|
# if no expectedError that means all the tests have successfully
|
|
# passed.
|
|
if len(self.expectedError) == 0:
|
|
return -1
|
|
options.bisectChunk = self.expectedError.keys()[0]
|
|
self.summary.append(
|
|
"\tFound Error in test: %s" %
|
|
options.bisectChunk)
|
|
return 0
|
|
|
|
# If options.bisectChunk is not in self.result then we need to move to
|
|
# the next run.
|
|
if options.bisectChunk not in self.result:
|
|
return -1
|
|
|
|
self.summary.append("\tPass %d:" % self.contents['loop'])
|
|
if len(self.contents['testsToRun']) > 1:
|
|
self.summary.append(
|
|
"\t\t%d test files(start,end,failing). [%s, %s, %s]" % (len(
|
|
self.contents['testsToRun']),
|
|
self.contents['testsToRun'][0],
|
|
self.contents['testsToRun'][
|
|
-2],
|
|
self.contents['testsToRun'][
|
|
-1]))
|
|
else:
|
|
self.summary.append(
|
|
"\t\t1 test file [%s]" %
|
|
self.contents['testsToRun'][0])
|
|
return self.check_for_intermittent(options)
|
|
|
|
if self.result[options.bisectChunk] == "PASS":
|
|
self.summary.append("\t\tno failures found.")
|
|
if self.contents['loop'] == 1:
|
|
status = -1
|
|
else:
|
|
self.contents['result'] = "PASS"
|
|
status = 0
|
|
|
|
elif self.result[options.bisectChunk] == "FAIL":
|
|
if 'expectedError' not in self.contents:
|
|
self.summary.append("\t\t%s failed." %
|
|
self.contents['testsToRun'][-1])
|
|
self.contents['expectedError'] = self.expectedError[
|
|
options.bisectChunk]
|
|
status = 0
|
|
|
|
elif self.expectedError[options.bisectChunk] == self.contents['expectedError']:
|
|
self.summary.append(
|
|
"\t\t%s failed with expected error." % self.contents['testsToRun'][-1])
|
|
self.contents['result'] = "FAIL"
|
|
status = 0
|
|
|
|
# This code checks for test-bleedthrough. Should work for any
|
|
# algorithm.
|
|
numberOfTests = len(self.contents['testsToRun'])
|
|
if numberOfTests < 3:
|
|
# This means that only 2 tests are run. Since the last test
|
|
# is the failing test itself therefore the bleedthrough
|
|
# test is the first test
|
|
self.summary.append(
|
|
"TEST-UNEXPECTED-FAIL | %s | Bleedthrough detected, this test is the root cause for many of the above failures" %
|
|
self.contents['testsToRun'][0])
|
|
status = -1
|
|
else:
|
|
self.summary.append(
|
|
"\t\t%s failed with different error." % self.contents['testsToRun'][-1])
|
|
status = -1
|
|
|
|
return status
|
|
|
|
def check_for_intermittent(self, options):
|
|
"This method is used to check whether a test is an intermittent."
|
|
if self.result[options.bisectChunk] == "PASS":
|
|
self.summary.append(
|
|
"\t\tThe test %s passed." %
|
|
self.contents['testsToRun'][0])
|
|
if self.repeat > 0:
|
|
# loop is set to 1 to again run the single test.
|
|
self.contents['loop'] = 1
|
|
self.repeat -= 1
|
|
return 0
|
|
else:
|
|
if self.failcount > 0:
|
|
# -1 is being returned as the test is intermittent, so no need to bisect further.
|
|
return -1
|
|
# If the test does not fail even once, then proceed to next chunk for bisection.
|
|
# loop is set to 2 to proceed on bisection.
|
|
self.contents['loop'] = 2
|
|
return 1
|
|
elif self.result[options.bisectChunk] == "FAIL":
|
|
self.summary.append(
|
|
"\t\tThe test %s failed." %
|
|
self.contents['testsToRun'][0])
|
|
self.failcount += 1
|
|
self.contents['loop'] = 1
|
|
self.repeat -= 1
|
|
# self.max_failures is the maximum number of times a test is allowed
|
|
# to fail to be called an intermittent. If a test fails more than
|
|
# limit set, it is a perma-fail.
|
|
if self.failcount < self.max_failures:
|
|
if self.repeat == 0:
|
|
# -1 is being returned as the test is intermittent, so no need to bisect further.
|
|
return -1
|
|
return 0
|
|
else:
|
|
self.summary.append(
|
|
"TEST-UNEXPECTED-FAIL | %s | Bleedthrough detected, this test is the root cause for many of the above failures" %
|
|
self.contents['testsToRun'][0])
|
|
return -1
|
|
|
|
def print_summary(self):
|
|
"This method is used to print the recorded summary."
|
|
print "Bisection summary:"
|
|
for line in self.summary:
|
|
print line
|