source: src/tests/test.py @ 240e1ff

#!/usr/bin/python
from __future__ import print_function

from functools import partial
from multiprocessing import Pool
from os import listdir, environ
from os.path import isfile, join, splitext
from pybin.tools import *

import argparse
import multiprocessing
import os
import re
import signal
import sys

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

# Test class that defines what a test is
class Test:
    def __init__(self, name, path):
        self.name, self.path = name, path

# parses the Makefile to find the machine type (32-bit / 64-bit)
def getMachineType():
        sh('echo "void ?{}(int*a,int b){}int main(){return 0;}" > .dummy.c')
        ret, out = sh("make .dummy -s", print2stdout=True)
        
        if ret != 0:
                print("Failed to identify architecture:")
                print(out)
                print("Stopping")
                rm( (".dummy.c",".dummy") )
                sys.exit(1)

        _, out = sh("file .dummy", print2stdout=False)
        rm( (".dummy.c",".dummy") )

        return re.search("ELF\s([0-9]+)-bit", out).group(1)

def listTestsFolder(folder) :
        path = ('./.expect/%s/' % folder) if folder else './.expect/'
        subpath = "%s/" % folder if folder else ""

        # tests directly in the .expect folder will always be processed
        return map(lambda fname: Test(fname, subpath + fname),
                [splitext(f)[0] for f in listdir( path )
                if not f.startswith('.') and f.endswith('.txt')
                ])

# reads the directory ./.expect and indentifies the tests
def listTests( concurrent ):
        machineType = getMachineType()

        # tests directly in the .expect folder will always be processed
        generic_list = listTestsFolder( "" )

        # tests in the machineType folder will be ran only for the corresponding compiler
        typed_list = listTestsFolder( machineType )

        # tests in the concurrent folder will be ran only if concurrency is enabled
        concurrent_list = listTestsFolder( "concurrent" ) if concurrent else []

        # append both lists to get
        return generic_list + typed_list + concurrent_list;

# from the found tests, filter all the valid tests/desired tests
def validTests( 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 :
                        if testname.endswith( (".c", ".cc", ".cpp") ):
                                print('ERROR: "%s", tests are not allowed to end with a C/C++/CFA extension, ignoring it' % testname, file=sys.stderr)
                        else :
                                found = [test for test in allTests if test.name == testname]
                                tests.append( found[0] if len(found) == 1 else Test(testname, testname) )

        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 allTests if t.name == testname]

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

        # make sure we have at least some test to run
        if len(tests) == 0 :
                print('ERROR: No valid test to run', file=sys.stderr)
                sys.exit(1)

        return tests

# parses the option
def getOptions():
        # 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='no')
        parser.add_argument('--concurrent', help='Run concurrent tests', type=yes_no, default='yes')
        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('-j', '--jobs', help='Number of tests to run simultaneously', type=int, default='8')
        parser.add_argument('--list-comp', help='List all valide arguments', action='store_true')
        parser.add_argument('tests', metavar='test', type=str, nargs='*', help='a list of tests to run')

        options =  parser.parse_args()

        # 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

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

        return options

def jobCount( options ):
        # check if the user already passed in a number of jobs for multi-threading
        make_flags = environ.get('MAKEFLAGS')
        make_jobs_fds = re.search("--jobserver-(auth|fds)=\s*([0-9]+),([0-9]+)", make_flags) if make_flags else None
        if make_jobs_fds :
                tokens = os.read(int(make_jobs_fds.group(2)), 1024)
                options.jobs = len(tokens)
                os.write(int(make_jobs_fds.group(3)), tokens)
        else :
                options.jobs = multiprocessing.cpu_count()

        # make sure we have a valid number of jobs that corresponds to user input
        if options.jobs <= 0 :
                print('ERROR: Invalid number of jobs', file=sys.stderr)
                sys.exit(1)

        return min( options.jobs, len(tests) ), True if make_flags else False

################################################################################
#               running test functions
################################################################################
# logic to run a single test and return the result (No handling of printing or other test framework logic)
def run_single_test(test, generate, dry_run, debug):

        # find the output file based on the test name and options flag
        out_file = (".out/%s.log" % test.name) if not generate else (".expect/%s.txt" % test.path)
        err_file = ".err/%s.log" % test.name

        # remove any outputs from the previous tests to prevent side effects
        rm( (out_file, test.name), dry_run )

        options = "-debug" if debug else "-nodebug"

        # build, skipping to next test on error
        make_ret, _ = sh("""%s test=yes EXTRA_FLAGS="-quiet %s" %s 2> %s 1> /dev/null""" % (make_cmd, options, test.name, out_file), dry_run)

        # if the make command succeds continue otherwise skip to diff
        if make_ret == 0 :
                # fetch optional input
                stdinput = "< .in/%s.txt" % test.name if isfile(".in/%s.txt" % test.path) else ""

                if fileIsExecutable(test.name) :
                        # run test
                        sh("./%s %s > %s 2>&1" % (test.name, stdinput, out_file), dry_run)
                else :
                        # simply cat the result into the output
                        sh("cat %s > %s" % (test.name, out_file), dry_run)

        else :
                # command failed save the log to less temporary file
                sh("mv %s %s" % (err_file, out_file), dry_run)

        retcode = 0
        error = None

        if generate :
                # if we are ounly generating the output we still need to check that the test actually exists
                if not dry_run and fileContainsOnly(out_file, "make: *** No rule to make target `%s'.  Stop." % test.name) :
                        retcode = 1;
                        error = "\t\tNo make target for test %s!" % test.name
                        sh("rm %s" % out_file, False)

        else :
                # fetch return code and error from the diff command
                retcode, error = diff(".expect/%s.txt" % test.path, ".out/%s.log" % test.name, dry_run)
        
        # clean the executable
        sh("rm -f %s > /dev/null 2>&1" % test.name, dry_run)

        return retcode, error

# run a single test and handle the errors, outputs, printing, exception handling, etc.
def run_test_worker(t, generate, dry_run, debug) :

        signal.signal(signal.SIGINT, signal.SIG_DFL)
        # print formated name
        name_txt = "%20s  " % t.name

        #run the test instance and collect the result
        test_failed, error = run_single_test(t, generate, dry_run, debug)

        # update output based on current action
        if generate :
                failed_txt = "ERROR"
                success_txt = "Done"
        else :
                failed_txt = "FAILED"
                success_txt = "PASSED"

        #print result with error if needed
        text = name_txt + (failed_txt if test_failed else success_txt)
        out = sys.stdout
        if error :
                text = text + "\n" + error
                out = sys.stderr

        print(text, file = out);
        sys.stdout.flush()
        sys.stderr.flush()
        signal.signal(signal.SIGINT, signal.SIG_IGN)

        return test_failed

# run the given list of tests with the given parameters
def run_tests(tests, generate, dry_run, jobs, debug) :
        # clean the sandbox from previous commands
        sh("%s clean > /dev/null 2>&1" % make_cmd, dry_run)

        # make sure the required folder are present
        sh('mkdir -p .out .expect .err', dry_run)

        if generate :
                print( "Regenerate tests for: " )

        # create the executor for our jobs and handle the signal properly
        original_sigint_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
        pool = Pool(jobs)
        signal.signal(signal.SIGINT, original_sigint_handler)

        # for each test to run
        try :
                results = pool.map_async(partial(run_test_worker, generate=generate, dry_run=dry_run, debug=debug), tests ).get(3600)
        except KeyboardInterrupt:
                pool.terminate()
                print("Tests interrupted by user")
                sys.exit(1)

        # clean the workspace
        sh("%s clean > /dev/null 2>&1" % make_cmd, dry_run)

        for failed in results:
                if failed :
                        return 1

        return 0


################################################################################
#               main loop
################################################################################
if __name__ == "__main__":
        #always run from same folder
        chdir() 
        
        # parse the command line arguments
        options = getOptions()

        # fetch the liest of all valid tests
        allTests = listTests( options.concurrent )

        # 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 :
                tests = allTests

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

        # sort the test alphabetically for convenience
        tests.sort(key=lambda t: t.name)

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

        elif options.list :
                print("\n".join(map(lambda t: "%s (%s)" % (t.name, t.path), tests)))

        else :
                options.jobs, forceJobs = jobCount( options )

                print('Running (%s) on %i cores' % ("debug" if options.debug else "no debug", options.jobs))
                make_cmd = "make" if forceJobs else ("make -j%i" % options.jobs)

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