def test_job_description_attributes():
    # attributes serialization
    attrs = {'j1_name': 'j1', 'j1_var1': 'var1'}
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            attributes=attrs)
    assert all((len(j.attributes) == len(attrs), j.attributes == attrs))
    j_json = j.to_json()
    j_clone = Job(**json.loads(j_json))
    assert all(
        (len(j_clone.attributes) == len(attrs), j_clone.attributes == attrs))
    assert j.to_dict() == j_clone.to_dict()

    # attributes wrong format
    with pytest.raises(IllegalJobDescription):
        Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            attributes="some_illegal_attributes")
    with pytest.raises(IllegalJobDescription):
        Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            attributes=["some_illegal_attributes", "more_illegal_attributes"])
Ejemplo n.º 2
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def test_local_error_duplicate_name_job_separate_reqs(tmpdir):
    file_path = tmpdir.join('jobs.json')

    print('tmpdir: {}'.format(str(tmpdir)))

    jobName = 'mdate'
    jobs1 = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution('date',
                             wd=abspath(tmpdir.join('date.sandbox')),
                             stdout='date.out',
                             stderr='date.err'),
                JobResources(numCores=ResourceSize(1)))
        ]
    ]
    jobs2 = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution('sleep',
                             wd=abspath(tmpdir.join('sleep.sandbox')),
                             stdout='sleep.out',
                             stderr='sleep.err'),
                JobResources(numCores=ResourceSize(1)))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs1
    }, {
        'request': 'submit',
        'jobs': jobs2
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--file', '--file-path',
        str(file_path), '--nodes', '2', '--wd',
        str(tmpdir), '--report-format', 'json'
    ]
    QCGPMService().start()

    # the first job (date) should execute
    check_job_status_in_json([jobName],
                             workdir=str(tmpdir),
                             dest_state='SUCCEED')
    assert all((isdir(abspath(tmpdir.join('date.sandbox'))),
                exists(join(abspath(tmpdir.join('date.sandbox')), 'date.out')),
                exists(join(abspath(tmpdir.join('date.sandbox')),
                            'date.err'))))

    # the second job (sleep) due to the name clash should not execute
    assert not isdir(abspath(tmpdir.join('sleep.sandbox')))
def test_joblist():
    jlist = JobList()

    # adding and removing jobs from list
    jlist.add(
        Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1)))
    assert jlist.exist('j1')
    assert jlist.get('j1').get_name() == 'j1'

    jlist.add(
        Job(name='j2',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1)))
    assert all((jlist.exist('j1'), jlist.exist('j2')))
    assert jlist.get('j2').get_name() == 'j2'

    with pytest.raises(JobAlreadyExist):
        jlist.add(
            Job(name='j2',
                execution=JobExecution(exec='/bin/date'),
                resources=JobResources(numCores=1)))

    with pytest.raises(JobAlreadyExist):
        jlist.add(
            Job(name='j1',
                execution=JobExecution(exec='/bin/date'),
                resources=JobResources(numCores=1)))

    jnames = jlist.jobs()
    assert all((len(jnames) == 2, 'j1' in jnames, 'j2' in jnames))

    jlist.remove('j2')
    assert not jlist.exist('j2')
    assert jlist.get('j2') is None

    jnames = jlist.jobs()
    assert all((len(jnames) == 1, 'j1' in jnames))

    # try to add something which is not a job
    with pytest.raises(Exception):
        jlist.add('another job')

    # parsing job iteration names
    assert JobList.parse_jobname('j1') == ('j1', None)
    assert JobList.parse_jobname('j1:1') == ('j1', 1)
    with pytest.raises(ValueError):
        assert JobList.parse_jobname('j1:2:1') == ('j1', '2:1')
    with pytest.raises(ValueError):
        assert JobList.parse_jobname('j1:') == ('j1', '')
def test_jobdescription_jobname():
    # job name ok
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1))
    assert j

    # missing job name
    with pytest.raises(IllegalJobDescription):
        Job(name=None,
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1))

    # illegal character in job name
    with pytest.raises(IllegalJobDescription):
        Job(name='j1:1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1))
Ejemplo n.º 5
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def test_local_error_duplicate_name_job(tmpdir):
    file_path = tmpdir.join('jobs.json')

    print('tmpdir: {}'.format(str(tmpdir)))

    jobName = 'mdate'
    jobs = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution('date',
                             wd=abspath(tmpdir.join('date.sandbox')),
                             stdout='date.out',
                             stderr='date.err'),
                JobResources(numCores=ResourceSize(1))),
            Job(
                jobName,
                JobExecution('sleep',
                             wd=abspath(tmpdir.join('sleep.sandbox')),
                             stdout='sleep.out',
                             stderr='sleep.err'),
                JobResources(numCores=ResourceSize(1)))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--file', '--file-path',
        str(file_path), '--nodes', '2', '--wd',
        str(tmpdir), '--report-format', 'json'
    ]
    QCGPMService().start()

    # no job should be executed due to the failed submit request with non-unique jobs inside
    assert not isdir(abspath(tmpdir.join('date.sandbox')))
    assert not isdir(abspath(tmpdir.join('sleep.sandbox')))
Ejemplo n.º 6
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def test_local_error_job_desc():
    # missing job execution
    with pytest.raises(IllegalJobDescription):
        Job('error_job',
            JobExecution(None, stdout='date.out', stderr='date.err'),
            JobResources(numCores=ResourceSize(1)))

    # wrong format of arguments
    with pytest.raises(IllegalJobDescription):
        Job(
            'error_job',
            JobExecution('date',
                         args='this should be a list',
                         stdout='date.out',
                         stderr='date.err'),
            JobResources(numCores=ResourceSize(1)))

    # wrong format of environment
    with pytest.raises(IllegalJobDescription):
        Job(
            'error_job',
            JobExecution('date',
                         args=['arg1'],
                         env=['this shuld be a dict'],
                         stdout='date.out',
                         stderr='date.err'),
            JobResources(numCores=ResourceSize(1)))

    # missing execution definition
    with pytest.raises(IllegalJobDescription):
        Job('error_job', None, JobResources(numCores=ResourceSize(1)))

    # missing resources definition
    with pytest.raises(IllegalJobDescription):
        Job(
            'error_job',
            JobExecution('date',
                         args=['arg1'],
                         env=['this shuld be a dict'],
                         stdout='date.out',
                         stderr='date.err'), None)
Ejemplo n.º 7
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def test_local_simple_script_job(tmpdir):
    file_path = tmpdir.join('jobs.json')

    print('tmpdir: {}'.format(str(tmpdir)))

    jobName = 'mdate_script'
    jobs = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution(script='/bin/date\n/bin/hostname\n',
                             wd=abspath(tmpdir.join('date.sandbox')),
                             stdout='date.out',
                             stderr='date.err'),
                JobResources(numCores=ResourceSize(1)))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--log', 'debug', '--file', '--file-path',
        str(file_path), '--nodes', '2', '--wd',
        str(tmpdir), '--report-format', 'json'
    ]
    QCGPMService().start()

    check_job_status_in_json([jobName],
                             workdir=str(tmpdir),
                             dest_state='SUCCEED')
    assert all(
        (isdir(abspath(tmpdir.join('date.sandbox'))),
         exists(join(abspath(tmpdir.join('date.sandbox')), 'date.out')),
         exists(join(abspath(tmpdir.join('date.sandbox')), 'date.err')),
         stat(join(abspath(tmpdir.join('date.sandbox')), 'date.out')).st_size >
         0, stat(join(abspath(tmpdir.join('date.sandbox')),
                      'date.err')).st_size == 0))

    with pytest.raises(ValueError):
        check_job_status_in_json([jobName + 'xxx'],
                                 workdir=str(tmpdir),
                                 dest_state='SUCCEED')
Ejemplo n.º 8
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def test_local_workflows_error(tmpdir):
    file_path = tmpdir.join('jobs.json')

    print('tmpdir: {}'.format(str(tmpdir)))

    jobs = [
        job.to_dict() for job in [
            Job('first',
                JobExecution('sleep',
                             args=['2s'],
                             wd=abspath(tmpdir.join('first.sandbox')),
                             stdout='out',
                             stderr='err'),
                JobResources(numCores=ResourceSize(1)),
                dependencies=JobDependencies(after=['not-existing']))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--file', '--file-path',
        str(file_path), '--nodes', '2', '--wd',
        str(tmpdir), '--report-format', 'json'
    ]
    QCGPMService().start()

    assert not exists(abspath(tmpdir.join('first.sandbox')))

    rmtree(str(tmpdir))
Ejemplo n.º 9
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def test_local_workflows(tmpdir):
    file_path = tmpdir.join('jobs.json')

    print('tmpdir: {}'.format(str(tmpdir)))

    jobs = [
        job.to_dict() for job in [
            Job(
                'first',
                JobExecution('sleep',
                             args=['2s'],
                             wd=abspath(tmpdir.join('first.sandbox')),
                             stdout='out',
                             stderr='err'),
                JobResources(numCores=ResourceSize(1))),
            Job('second',
                JobExecution('sleep',
                             args=['1s'],
                             wd=abspath(tmpdir.join('second.sandbox')),
                             stdout='out',
                             stderr='err'),
                JobResources(numCores=ResourceSize(1)),
                dependencies=JobDependencies(after=['first'])),
            Job('third',
                JobExecution('date',
                             wd=abspath(tmpdir.join('third.sandbox')),
                             stdout='out',
                             stderr='err'),
                JobResources(numCores=ResourceSize(1)),
                dependencies=JobDependencies(after=['first', 'second']))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    # the ammount of resources should be enough to theoretically start all three job's at once
    sys.argv = [
        'QCG-PilotJob', '--file', '--file-path',
        str(file_path), '--nodes', '4', '--wd',
        str(tmpdir), '--report-format', 'json'
    ]
    QCGPMService().start()

    jnames = ['first', 'second', 'third']
    check_job_status_in_json(jnames, workdir=str(tmpdir), dest_state='SUCCEED')
    for jname in jnames:
        assert all((isdir(abspath(tmpdir.join('{}.sandbox'.format(jname)))),
                    exists(
                        join(abspath(tmpdir.join('{}.sandbox'.format(jname))),
                             'out')),
                    exists(
                        join(abspath(tmpdir.join('{}.sandbox'.format(jname))),
                             'err'))))

    with open(join(find_single_aux_dir(str(tmpdir)), 'jobs.report'), 'r') as f:
        job_stats = [json.loads(line) for line in f.readlines()]

    assert len(job_stats) == len(jnames)

    jstats = {}
    for i in range(0, len(jnames)):
        job = job_stats[i]

        print('readed job stats: {}'.format(str(job)))
        t = datetime.strptime(job['runtime']['rtime'], "%H:%M:%S.%f")
        rtime = timedelta(hours=t.hour,
                          minutes=t.minute,
                          seconds=t.second,
                          microseconds=t.microsecond)

        # find start executing time
        exec_state = list(
            filter(lambda st_en: st_en['state'] == 'EXECUTING',
                   job['history']))
        assert len(exec_state) == 1

        # find finish executing time
        finish_state = list(
            filter(lambda st_en: st_en['state'] == 'SUCCEED', job['history']))
        assert len(finish_state) == 1

        start_time = datetime.strptime(exec_state[0]['date'],
                                       '%Y-%m-%dT%H:%M:%S.%f')
        finish_time = datetime.strptime(finish_state[0]['date'],
                                        '%Y-%m-%dT%H:%M:%S.%f')

        jstats[job['name']] = {
            'r_time': rtime,
            's_time': start_time,
            'f_time': finish_time
        }

    # assert second job started after the first one
    assert jstats['second']['s_time'] > jstats['first']['f_time']

    # assert third job started after the first and second ones
    assert all((jstats['third']['s_time'] > jstats['first']['f_time'],
                jstats['third']['s_time'] > jstats['second']['f_time']))

    rmtree(str(tmpdir))
Ejemplo n.º 10
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def test_slurmenv_simple_job():
    if not in_slurm_allocation() or get_num_slurm_nodes() < 2:
        pytest.skip(
            'test not run in slurm allocation or allocation is smaller than 2 nodes'
        )

    resources, allocation = get_slurm_resources_binded()
    resources_node_names = set(n.name for n in resources.nodes)

    set_pythonpath_to_qcg_module()
    tmpdir = str(tempfile.mkdtemp(dir=SHARED_PATH))

    file_path = join(tmpdir, 'jobs.json')
    print('tmpdir: {}'.format(tmpdir))

    jobName = 'mdate'
    jobs = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution('date',
                             wd=abspath(join(tmpdir, 'date.sandbox')),
                             stdout='date.out',
                             stderr='date.err'),
                JobResources(numCores=ResourceSize(1)))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--log', 'debug', '--file', '--file-path',
        str(file_path), '--wd', tmpdir, '--report-format', 'json'
    ]
    QCGPMService().start()

    jobEntries = check_job_status_in_json([jobName],
                                          workdir=tmpdir,
                                          dest_state='SUCCEED')
    assert all(
        (isdir(abspath(join(tmpdir, 'date.sandbox'))),
         exists(join(abspath(join(tmpdir, 'date.sandbox')), 'date.out')),
         exists(join(abspath(join(tmpdir, 'date.sandbox')), 'date.err')),
         stat(join(abspath(join(tmpdir, 'date.sandbox')), 'date.out')).st_size
         > 0))
    # there can be some debugging messages in the stderr
    #                stat(join(abspath(join(tmpdir, 'date.sandbox')), 'date.err')).st_size == 0))

    for jname, jentry in jobEntries.items():
        assert all(('runtime' in jentry, 'allocation'
                    in jentry.get('runtime', {})))

        jalloc = jentry['runtime']['allocation']
        for jalloc_node in jalloc.split(','):
            node_name = jalloc_node[:jalloc_node.index('[')]
            print('{} in available nodes ({})'.format(
                node_name, ','.join(resources_node_names)))
            assert node_name in resources_node_names, '{} not in nodes ({}'.format(
                node_name, ','.join(resources_node_names))

    with pytest.raises(ValueError):
        check_job_status_in_json([jobName + 'xxx'],
                                 workdir=tmpdir,
                                 dest_state='SUCCEED')

    rmtree(tmpdir)
Ejemplo n.º 11
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def test_slurmenv_many_nodes_many_cores():
    if not in_slurm_allocation() or get_num_slurm_nodes() < 2:
        pytest.skip(
            'test not run in slurm allocation or allocation is smaller than 2 nodes'
        )

    resources, allocation = get_slurm_resources_binded()
    resources_node_names = set(n.name for n in resources.nodes)

    set_pythonpath_to_qcg_module()
    tmpdir = str(tempfile.mkdtemp(dir=SHARED_PATH))

    file_path = join(tmpdir, 'jobs.json')
    print('tmpdir: {}'.format(tmpdir))

    jobName = 'hostname'
    jobwdir_base = 'hostname.sandbox'
    cores_num = resources.nodes[0].free
    nodes_num = resources.total_nodes
    jobs = [
        job.to_dict() for job in [
            Job(
                jobName,
                JobExecution(exec='mpirun',
                             args=['--allow-run-as-root', 'hostname'],
                             wd=abspath(join(tmpdir, jobwdir_base)),
                             stdout='hostname.out',
                             stderr='hostname.err',
                             modules=['mpi/openmpi-x86_64']),
                JobResources(numCores=ResourceSize(cores_num),
                             numNodes=ResourceSize(nodes_num)))
        ]
    ]
    reqs = [{
        'request': 'submit',
        'jobs': jobs
    }, {
        'request': 'control',
        'command': 'finishAfterAllTasksDone'
    }]
    save_reqs_to_file(reqs, file_path)
    print('jobs saved to file_path: {}'.format(str(file_path)))

    sys.argv = [
        'QCG-PilotJob', '--log', 'debug', '--file', '--file-path',
        str(file_path), '--wd', tmpdir, '--report-format', 'json'
    ]
    QCGPMService().start()

    jobEntries = check_job_status_in_json([jobName],
                                          workdir=tmpdir,
                                          dest_state='SUCCEED')
    assert all(
        (isdir(abspath(join(tmpdir, jobwdir_base))),
         exists(join(abspath(join(tmpdir, jobwdir_base)), 'hostname.out')),
         exists(join(abspath(join(tmpdir, jobwdir_base)), 'hostname.err')),
         stat(join(abspath(join(tmpdir, jobwdir_base)),
                   'hostname.out')).st_size > 0))

    job_nodes = []
    allocated_cores = 0
    for jname, jentry in jobEntries.items():
        assert all(('runtime' in jentry, 'allocation'
                    in jentry.get('runtime', {})))

        jalloc = jentry['runtime']['allocation']
        for jalloc_node in jalloc.split(','):
            node_name = jalloc_node[:jalloc_node.index('[')]
            job_nodes.append(node_name)
            print('{} in available nodes ({})'.format(
                node_name, ','.join(resources_node_names)))
            assert node_name in resources_node_names, '{} not in nodes ({}'.format(
                node_name, ','.join(resources_node_names))

            ncores = len(jalloc_node[jalloc_node.index('[') + 1:-1].split(':'))
            print('#{} cores on node {}'.format(ncores, node_name))
            allocated_cores += ncores
    assert len(job_nodes) == nodes_num, str(job_nodes)
    assert allocated_cores == nodes_num * cores_num, allocated_cores

    # check if hostname is in stdout in two lines
    with open(abspath(join(tmpdir, join(jobwdir_base, 'hostname.out'))),
              'rt') as stdout_file:
        stdout_content = [line.rstrip() for line in stdout_file.readlines()]
    assert len(stdout_content) == nodes_num * cores_num, str(stdout_content)
    assert all(hostname in job_nodes
               for hostname in stdout_content), str(stdout_content)

    with pytest.raises(ValueError):
        check_job_status_in_json([jobName + 'xxx'],
                                 workdir=tmpdir,
                                 dest_state='SUCCEED')

    rmtree(tmpdir)
Ejemplo n.º 12
0
def test_job_description_subjobs():
    # iteration job
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations

    # iteration names
    assert j.get_name() == 'j1'
    assert all(
        j.get_name(it) == '{}:{}'.format(j.get_name(), it) for it in range(10))

    # iteration states (initial)
    assert j.state() == JobState.QUEUED
    assert all(j.state(it) == JobState.QUEUED for it in range(10))
    assert all(j.str_state(it) == JobState.QUEUED.name for it in range(10))

    # iteration runtimes
    for it in range(10):
        j.append_runtime({'host': 'local.{}'.format(it)}, it)
    assert all(
        j.runtime(it).get('host') == 'local.{}'.format(it) for it in range(10))

    # whole job success
    for it in range(10):
        j.set_state(JobState.SUCCEED, it, 'job {} succeed'.format(it))
    assert j.state() == JobState.SUCCEED
    assert all(
        j.messages(it) == 'job {} succeed'.format(it) for it in range(10))

    # whole job fail (one of the iteration failed)
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(9):
        j.set_state(JobState.SUCCEED, it, 'job {} succeed'.format(it))
    j.set_state(JobState.FAILED, 9, 'job 9 failed')
    assert j.state() == JobState.FAILED
    assert all(
        j.messages(it) == 'job {} succeed'.format(it) for it in range(9))
    assert j.messages(9) == 'job 9 failed'

    # whole job fail (one of the iteration canceled)
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(9):
        j.set_state(JobState.SUCCEED, it, 'job {} succeed'.format(it))
    j.set_state(JobState.CANCELED, 9, 'job 9 canceled')
    assert j.state() == JobState.FAILED
    assert all(
        j.messages(it) == 'job {} succeed'.format(it) for it in range(9))
    assert j.messages(9) == 'job 9 canceled'

    # whole job fail (one of the iteration omitted)
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(9):
        j.set_state(JobState.SUCCEED, it, 'job {} succeed'.format(it))
    j.set_state(JobState.OMITTED, 9, 'job 9 omitted')
    assert j.state() == JobState.FAILED
    assert all(
        j.messages(it) == 'job {} succeed'.format(it) for it in range(9))
    assert j.messages(9) == 'job 9 omitted'

    # not all iterations finished
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(9):
        j.set_state(JobState.SUCCEED, it, 'job {} succeed'.format(it))
    assert j.state() == JobState.QUEUED
    assert all(
        j.messages(it) == 'job {} succeed'.format(it) for it in range(9))

    # whole job fail (just one succeed
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(9):
        j.set_state(JobState.FAILED, it, 'job {} failed'.format(it))
    j.set_state(JobState.CANCELED, 9, 'job 9 succeed')
    assert j.state() == JobState.FAILED
    assert all(j.messages(it) == 'job {} failed'.format(it) for it in range(9))
    assert j.messages(9) == 'job 9 succeed'

    # many messages per iteration
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    for it in range(10):
        j.set_state(JobState.EXECUTING, it, 'job {} executing'.format(it))
    assert j.state() == JobState.QUEUED
    assert all(j.state(it) == JobState.EXECUTING for it in range(10))
    assert all(j.str_state(it) == JobState.EXECUTING.name for it in range(10))
    for it in range(10):
        j.set_state(JobState.SUCCEED, it, 'job {} finished'.format(it))
    assert j.state() == JobState.SUCCEED
    assert all(j.state(it) == JobState.SUCCEED for it in range(10))
    assert all(j.str_state(it) == JobState.SUCCEED.name for it in range(10))
    assert all(
        j.messages(it) == 'job {it} executing\njob {it} finished'.format(it=it)
        for it in range(10))

    # messages for job
    j = Job(name='j1',
            execution=JobExecution(exec='/bin/date'),
            resources=JobResources(numCores=1),
            iteration=JobIteration(stop=10))
    assert j.has_iterations
    j.set_state(JobState.EXECUTING, iteration=None, err_msg='job executing')
    assert all((j.state() == JobState.EXECUTING,
                j.str_state() == JobState.EXECUTING.name))
    assert j.messages() == 'job executing'
    for it in range(10):
        j.set_state(JobState.EXECUTING, it, 'job {} executing'.format(it))
    j.set_state(JobState.FAILED, iteration=None, err_msg='job failed')
    assert all(
        (j.state() == JobState.FAILED, j.str_state() == JobState.FAILED.name))
    assert j.messages() == 'job executing\njob failed'
    # failed job will not change state if once set
    for it in range(10):
        j.set_state(JobState.SUCCEED, it, 'job {} finished'.format(it))
    assert all(
        (j.state() == JobState.FAILED, j.str_state() == JobState.FAILED.name))
    assert all(j.str_state(it) == JobState.SUCCEED.name for it in range(10))
    assert all(
        j.messages(it) == 'job {it} executing\njob {it} finished'.format(it=it)
        for it in range(10))