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Added randomness to the mutation strategy

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- now running only maximum one mutation per file.
- Beautified the output
This commit is contained in:
Sandeep Hegde 2017-10-31 01:54:59 -04:00
parent 5cc498dba2
commit ffbabf4a4c
2 changed files with 23 additions and 15 deletions
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38
python/servo/mutation/test.py
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@ -12,32 +12,37 @@ import re
import subprocess
import sys
import os
import random
DEVNULL = open(os.devnull, 'wb')
def mutate_line(file_name, line_number):
for line in fileinput.input(file_name, inplace=True):
if fileinput.lineno() == line_number:
line = re.sub(r'\s&&\s', ' || ', line)
print line.rstrip()
def mutation_test(file_name, tests):
def mutate_random_line(file_name):
line_numbers = []
for line in fileinput.input(file_name):
if re.search(r'\s&&\s', line):
line_numbers.append(fileinput.lineno())
if len(line_numbers) == 0:
return -1
else:
mutation_line_number = line_numbers[random.randint(0, len(line_numbers) - 1)]
for line in fileinput.input(file_name, inplace=True):
if fileinput.lineno() == mutation_line_number:
line = re.sub(r'\s&&\s', ' || ', line)
print line.rstrip()
return mutation_line_number
for line_to_mutate in line_numbers:
print "Mutating {0} at line {1}".format(file_name, line_to_mutate)
mutate_line(file_name, line_to_mutate)
print "compling mutant {0}:{1}".format(file_name, line_to_mutate)
def mutation_test(file_name, tests):
mutated_line = mutate_random_line(file_name)
if mutated_line != -1:
print "Mutating {0} at line {1}".format(file_name, mutated_line)
print "compling mutant {0}:{1}".format(file_name, mutated_line)
sys.stdout.flush()
subprocess.call('python mach build --release', shell=True, stdout=DEVNULL)
print "running tests for mutant {0}:{1}".format(file_name, line_to_mutate)
sys.stdout.flush()
for test in tests:
test_command = "python mach test-wpt {0} --release".format(test.encode('utf-8'))
print "running `{0}` test for mutant {1}:{2}".format(test, file_name, mutated_line)
sys.stdout.flush()
test_status = subprocess.call(test_command, shell=True, stdout=DEVNULL)
if test_status != 0:
print("Failed: while running `{0}`".format(test_command))
@ -47,6 +52,9 @@ def mutation_test(file_name, tests):
else:
print("Success: Mutation killed by {0}".format(test.encode('utf-8')))
break
print "reverting mutant {0}:{1}".format(file_name, line_to_mutate)
print "reverting mutant {0}:{1}".format(file_name, mutated_line)
sys.stdout.flush()
subprocess.call('git checkout {0}'.format(file_name), shell=True)
else:
print "Cannot mutate {0}".format(file_name)
print "-----------------------------------------------------------------\n"