source: tests/test.py @ c9f4cf8

#!/usr/bin/python3

from pybin.tools import *
from pybin.test_run import *
from pybin import settings

import argparse
import re
import sys
import tempfile
import time

import os
import psutil
import signal

################################################################################
#               help functions
################################################################################

def find_tests():
        expected = []

        def match_test(path):
                match = re.search("^%s\/([\w\/\-_]*).expect\/([\w\-_]+)(\.[\w\-_]+)?\.txt$" % settings.SRCDIR, path)
                if match :
                        test = Test()
                        test.name = match.group(2)
                        test.path = match.group(1)
                        test.arch = match.group(3)[1:] if match.group(3) else None
                        if settings.arch.match(test.arch):
                                expected.append(test)

        path_walk( match_test )

        return expected

# reads the directory ./.expect and indentifies the tests
def list_tests( includes, excludes ):
        # tests directly in the .expect folder will always be processed
        test_list = find_tests()

        # if we have a limited number of includes, filter by them
        if includes:
                test_list = [x for x in test_list if
                        x.target().startswith( tuple(includes) )
                ]

        # # if we have a folders to excludes, filter by them
        if excludes:
                test_list = [x for x in test_list if not
                        x.target().startswith( tuple(excludes) )
                ]

        return test_list

# from the found tests, filter all the valid tests/desired tests
def valid_tests( options ):
        tests = []

        # if we are regenerating the tests we need to find the information of the
        # already existing tests and create new info for the new tests
        if options.regenerate_expected :
                for testname in options.tests :
                        testname = canonical_path( testname )
                        if Test.valid_name(testname):
                                found = [test for test in all_tests if canonical_path( test.target() ) == testname]
                                tests.append( found[0] if len(found) == 1 else Test.from_target(testname) )
                        else :
                                print('ERROR: "%s", tests are not allowed to end with a C/C++/CFA extension, ignoring it' % testname, file=sys.stderr)

        else :
                # otherwise we only need to validate that all tests are present in the complete list
                for testname in options.tests:
                        test = [t for t in all_tests if path_cmp( t.target(), testname )]

                        if test :
                                tests.append( test[0] )
                        else :
                                print('ERROR: No expected file for test %s, ignoring it' % testname, file=sys.stderr)

        return tests

# parses the option
def parse_args():
        # create a parser with the arguments for the tests script
        parser = argparse.ArgumentParser(description='Script which runs cforall tests')
        parser.add_argument('--debug', help='Run all tests in debug or release', type=yes_no, default='yes')
        parser.add_argument('--install', help='Run all tests based on installed binaries or tree binaries', type=yes_no, default='no')
        parser.add_argument('--arch', help='Test for specific architecture', type=str, default='')
        parser.add_argument('--timeout', help='Maximum duration in seconds after a single test is considered to have timed out', type=int, default=60)
        parser.add_argument('--global-timeout', help='Maximum cumulative duration in seconds after the ALL tests are considered to have timed out', type=int, default=7200)
        parser.add_argument('--dry-run', help='Don\'t run the tests, only output the commands', action='store_true')
        parser.add_argument('--list', help='List all test available', action='store_true')
        parser.add_argument('--all', help='Run all test available', action='store_true')
        parser.add_argument('--regenerate-expected', help='Regenerate the .expect by running the specified tets, can be used with --all option', action='store_true')
        parser.add_argument('--archive-errors', help='If called with a valid path, on test crashes the test script will copy the core dump and the executable to the specified path.', type=str, default='')
        parser.add_argument('-j', '--jobs', help='Number of tests to run simultaneously', type=int)
        parser.add_argument('--list-comp', help='List all valide arguments', action='store_true')
        parser.add_argument('-I','--include', help='Directory of test to include, can be used multiple time, All  if omitted', action='append')
        parser.add_argument('-E','--exclude', help='Directory of test to exclude, can be used multiple time, None if omitted', action='append')
        parser.add_argument('tests', metavar='test', type=str, nargs='*', help='a list of tests to run')

        try:
                options =  parser.parse_args()
        except:
                print('ERROR: invalid arguments', file=sys.stderr)
                parser.print_help(sys.stderr)
                sys.exit(1)

        # script must have at least some tests to run or be listing
        listing    = options.list or options.list_comp
        all_tests  = options.all
        some_tests = len(options.tests) > 0
        some_dirs  = len(options.include) > 0 if options.include else 0

        # check that exactly one of the booleans is set to true
        if not sum( (listing, all_tests, some_tests, some_dirs) ) > 0 :
                print('''ERROR: must have option '--all', '--list', '--include', '-I' or non-empty test list''', file=sys.stderr)
                parser.print_help()
                sys.exit(1)

        return options

################################################################################
#               running test functions
################################################################################
def success(val):
        return val == 0 or settings.dry_run

def no_rule(file, target):
        return not settings.dry_run and file_contains_only(file, "make: *** No rule to make target `%s'.  Stop." % target)

# logic to run a single test and return the result (No handling of printing or other test framework logic)
def run_single_test(test):

        # find the output file based on the test name and options flag
        exe_file = test.target_executable();
        out_file = test.target_output()
        err_file = test.error_log()
        cmp_file = test.expect()
        in_file  = test.input()

        # prepare the proper directories
        test.prepare()

        # build, skipping to next test on error
        with Timed() as comp_dur:
                make_ret, _ = make( test.target(), output_file=subprocess.DEVNULL, error=out_file, error_file = err_file )

        run_dur = None
        # run everything in a temp directory to make sure core file are handled properly
        with tempdir():
                # if the make command succeeds continue otherwise skip to diff
                if success(make_ret):
                        with Timed() as run_dur:
                                if settings.dry_run or is_exe(exe_file):
                                        # run test
                                        retcode, _ = sh(exe_file, output_file=out_file, input_file=in_file, timeout=True)
                                else :
                                        # simply cat the result into the output
                                        retcode = cat(exe_file, out_file)
                else:
                        retcode = mv(err_file, out_file)

                if success(retcode):
                        if settings.generating :
                                # if we are ounly generating the output we still need to check that the test actually exists
                                if no_rule(out_file, test.target()) :
                                        retcode = 1
                                        error = "\t\tNo make target for test %s!" % test.target()
                                        rm(out_file)
                                else:
                                        error = None
                        else :
                                # fetch return code and error from the diff command
                                retcode, error = diff(cmp_file, out_file)

                else:
                        with open (out_file, "r") as myfile:
                                error = myfile.read()

                        ret, info = core_info(exe_file)
                        error = error + info if error else info

                        if settings.archive:
                                error = error + '\n' + core_archive(settings.archive, test.target(), exe_file)



        # clean the executable
        rm(exe_file)

        return retcode, error, [comp_dur.duration, run_dur.duration if run_dur else None]

# run a single test and handle the errors, outputs, printing, exception handling, etc.
def run_test_worker(t) :
        try :
                # print formated name
                name_txt = '{0:{width}}  '.format(t.target(), width=settings.output_width)

                retcode, error, duration = run_single_test(t)

                # update output based on current action
                result_txt = TestResult.toString( retcode, duration )

                #print result with error if needed
                text = '\t' + name_txt + result_txt
                out = sys.stdout
                if error :
                        text = text + '\n' + error

                return retcode == TestResult.SUCCESS, text
        except KeyboardInterrupt:
                return False, ""
        except Exception as ex:
                print("Unexpected error in worker thread: %s" % ex, file=sys.stderr)
                sys.stderr.flush()
                return False, ""


# run the given list of tests with the given parameters
def run_tests(tests, jobs) :
        # clean the sandbox from previous commands
        make('clean', output_file=subprocess.DEVNULL, error=subprocess.DEVNULL)

        # since python prints stacks by default on a interrupt, redo the interrupt handling to be silent
        def worker_init():
                def sig_int(signal_num, frame):
                        pass

                signal.signal(signal.SIGINT, sig_int)

        # create the executor for our jobs and handle the signal properly
        pool = multiprocessing.Pool(jobs, worker_init)

        failed = False

        def stop(x, y):
                print("Tests interrupted by user", file=sys.stderr)
                sys.exit(1)
        signal.signal(signal.SIGINT, stop)

        # for each test to run
        try :
                num = len(tests)
                fancy = sys.stdout.isatty()
                results = pool.imap_unordered(
                        run_test_worker,
                        tests,
                        chunksize = 1
                )

                for i, (succ, txt) in enumerate(timed(results, timeout = settings.timeout.total), 1) :
                        if not succ :
                                failed = True

                        print("       " + txt)

                        if(fancy and i != num):
                                print("%d/%d" % (i, num), end='\r')
                                sys.stdout.flush()

        except KeyboardInterrupt:
                print("Tests interrupted by user", file=sys.stderr)
                pool.terminate()
                pool.join()
                failed = True
        except multiprocessing.TimeoutError:
                print("ERROR: Test suite timed out", file=sys.stderr)
                pool.terminate()
                pool.join()
                failed = True
                killgroup() # needed to cleanly kill all children


        # clean the workspace
        make('clean', output_file=subprocess.DEVNULL, error=subprocess.DEVNULL)

        return 1 if failed else 0


################################################################################
#               main loop
################################################################################
if __name__ == "__main__":

        # parse the command line arguments
        options = parse_args()

        # init global settings
        settings.init( options )

        # fetch the liest of all valid tests
        all_tests = list_tests( options.include, options.exclude )


        # if user wants all tests than no other treatement of the test list is required
        if options.all or options.list or options.list_comp or options.include :
                tests = all_tests

        #otherwise we need to validate that the test list that was entered is valid
        else :
                tests = valid_tests( options )

        # make sure we have at least some test to run
        if not tests :
                print('ERROR: No valid test to run', file=sys.stderr)
                sys.exit(1)


        # sort the test alphabetically for convenience
        tests.sort(key=lambda t: (t.arch if t.arch else '') + t.target())

        # users may want to simply list the tests
        if options.list_comp :
                print("-h --help --debug --dry-run --list --arch --all --regenerate-expected --archive-errors --install --timeout --global-timeout -j --jobs ", end='')
                print(" ".join(map(lambda t: "%s" % (t.target()), tests)))

        elif options.list :
                print("Listing for %s:%s"% (settings.arch.string, settings.debug.string))
                fancy_print("\n".join(map(lambda t: t.toString(), tests)))

        else :
                # check the build configuration works
                settings.prep_output(tests)
                settings.validate()

                options.jobs, forceJobs = job_count( options, tests )
                settings.update_make_cmd(forceJobs, options.jobs)

                print('%s %i tests on %i cores (%s:%s)' % (
                        'Regenerating' if settings.generating else 'Running',
                        len(tests),
                        options.jobs,
                        settings.arch.string,
                        settings.debug.string
                ))

                # otherwise run all tests and make sure to return the correct error code
                sys.exit( run_tests(tests, options.jobs) )