#
# Copyright (c) 2010 Testrepository Contributors
# 
# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
# license at the users choice. A copy of both licenses are available in the
# project source as Apache-2.0 and BSD. You may not use this file except in
# compliance with one of these two licences.
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# license you chose for the specific language governing permissions and
# limitations under that license.

"""Tests for the testcommand module."""

from io import BytesIO
import os.path
import optparse
import re

import subunit
from testtools.compat import _b
from testtools.matchers import (
    Equals,
    MatchesAny,
    MatchesException,
    raises,
    )
from testtools.testresult.doubles import ExtendedTestResult

from testrepository.commands import run
from testrepository.ui.model import UI
from testrepository.repository import memory
from testrepository.testcommand import TestCommand
from testrepository.tests import ResourcedTestCase, Wildcard
from testrepository.tests.stubpackage import TempDirResource
from testrepository.tests.test_repository import run_timed


class FakeTestCommand(TestCommand):

    def __init__(self, ui, repo):
        TestCommand.__init__(self, ui, repo)
        self.oldschool = True


class TestTestCommand(ResourcedTestCase):

    resources = [('tempdir', TempDirResource())]

    def get_test_ui_and_cmd(self, options=(), args=(), repository=None):
        self.dirty()
        ui = UI(options=options, args=args)
        ui.here = self.tempdir
        return ui, self.useFixture(TestCommand(ui, repository))

    def get_test_ui_and_cmd2(self, options=(), args=()):
        self.dirty()
        ui = UI(options=options, args=args)
        ui.here = self.tempdir
        cmd = run.run(ui)
        ui.set_command(cmd)
        return ui, cmd

    def dirty(self):
        # Ugly: TODO - improve testresources to make this go away.
        dict(self.resources)['tempdir']._dirty = True

    def config_path(self):
        return os.path.join(self.tempdir, '.testr.conf')

    def set_config(self, text):
        stream = open(self.config_path(), 'wt')
        try:
            stream.write(text)
        finally:
            stream.close()

    def test_takes_ui(self):
        ui = UI()
        ui.here = self.tempdir
        command = TestCommand(ui, None)
        self.assertEqual(command.ui, ui)

    def test_TestCommand_is_a_fixture(self):
        ui = UI()
        ui.here = self.tempdir
        command = TestCommand(ui, None)
        command.setUp()
        command.cleanUp()

    def test_TestCommand_get_run_command_outside_setUp_fails(self):
        self.dirty()
        ui = UI()
        ui.here = self.tempdir
        command = TestCommand(ui, None)
        self.set_config('[DEFAULT]\ntest_command=foo\n')
        self.assertThat(command.get_run_command, raises(TypeError))
        command.setUp()
        command.cleanUp()
        self.assertThat(command.get_run_command, raises(TypeError))

    def test_TestCommand_cleanUp_disposes_instances(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo\n'
            'instance_dispose=bar $INSTANCE_IDS\n')
        command._instances.update([_b('baz'), _b('quux')])
        command.cleanUp()
        command.setUp()
        self.assertEqual([
            ('values', [('running', 'bar baz quux')]),
            ('popen', ('bar baz quux',), {'shell': True}),
            ('communicate',)], ui.outputs)

    def test_TestCommand_cleanUp_disposes_instances_fail_raises(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_results = [1]
        self.set_config(
            '[DEFAULT]\ntest_command=foo\n'
            'instance_dispose=bar $INSTANCE_IDS\n')
        command._instances.update([_b('baz'), _b('quux')])
        self.assertThat(command.cleanUp,
            raises(ValueError('Disposing of instances failed, return 1')))
        command.setUp()

    def test_get_run_command_no_config_file_errors(self):
        ui, command = self.get_test_ui_and_cmd()
        self.assertThat(command.get_run_command,
            raises(ValueError('No .testr.conf config file')))

    def test_get_run_command_no_config_settings_errors(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config('')
        self.assertThat(command.get_run_command,
            raises(ValueError(
            'No test_command option present in .testr.conf')))

    def test_get_run_command_returns_fixture_makes_IDFILE(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDOPTION\ntest_id_option=--load-list $IDFILE\n')
        fixture = command.get_run_command(['failing', 'alsofailing'])
        try:
            fixture.setUp()
            list_file_path = fixture.list_file_name
            source = open(list_file_path, 'rt')
            try:
                list_file_content = source.read()
            finally:
                source.close()
            self.assertEqual("failing\nalsofailing\n", list_file_content)
        finally:
            fixture.cleanUp()
        self.assertFalse(os.path.exists(list_file_path))

    def test_get_run_command_IDFILE_variable_setting(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDOPTION\ntest_id_option=--load-list $IDFILE\n')
        fixture = self.useFixture(
            command.get_run_command(['failing', 'alsofailing']))
        expected_cmd = 'foo --load-list %s' % fixture.list_file_name
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_get_run_command_IDLIST_variable_setting(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n')
        fixture = self.useFixture(
            command.get_run_command(['failing', 'alsofailing']))
        expected_cmd = 'foo failing alsofailing'
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_get_run_command_IDLIST_default_is_empty(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n')
        fixture = self.useFixture(command.get_run_command())
        expected_cmd = 'foo '
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_get_run_command_default_and_list_expands(self):
        ui, command = self.get_test_ui_and_cmd()
        buffer = BytesIO()
        stream = subunit.StreamResultToBytes(buffer)
        stream.status(test_id='returned', test_status='exists')
        stream.status(test_id='ids', test_status='exists')
        subunit_bytes = buffer.getvalue()
        ui.proc_outputs = [subunit_bytes]
        ui.options = optparse.Values()
        ui.options.parallel = True
        ui.options.concurrency = 2
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST $LISTOPT\n'
            'test_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        expected_cmd = 'foo returned ids '
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_get_run_command_IDLIST_default_passed_normally(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\ntest_id_list_default=whoo yea\n')
        fixture = self.useFixture(command.get_run_command())
        expected_cmd = 'foo whoo yea'
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_IDOPTION_evalutes_empty_string_no_ids(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDOPTION\ntest_id_option=--load-list $IDFILE\n')
        fixture = self.useFixture(command.get_run_command())
        expected_cmd = 'foo '
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_group_regex_option(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
                '[DEFAULT]\ntest_command=foo $IDOPTION\n'
                'test_id_option=--load-list $IDFILE\n'
                'group_regex=([^\\.]+\\.)+\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertEqual(
            'pkg.class.', fixture._group_callback('pkg.class.test_method'))

    def test_extra_args_passed_in(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDOPTION\ntest_id_option=--load-list $IDFILE\n')
        fixture = self.useFixture(command.get_run_command(
            testargs=('bar', 'quux')))
        expected_cmd = 'foo  bar quux'
        self.assertEqual(expected_cmd, fixture.cmd)

    def test_list_tests_requests_concurrency_instances(self):
        # testr list-tests is non-parallel, so needs 1 instance.
        # testr run triggering list-tests will want to run parallel on all, so
        # avoid latency by asking for whatever concurrency is up front.
        # This covers the case for non-listing runs as well, as the code path
        # is common.
        self.dirty()
        ui = UI(options= [('concurrency', 2), ('parallel', True)])
        ui.here = self.tempdir
        cmd = run.run(ui)
        ui.set_command(cmd)
        ui.proc_outputs = [_b('returned\ninstances\n')]
        command = self.useFixture(TestCommand(ui, None))
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n'
            'instance_provision=provision -c $INSTANCE_COUNT\n'
            'instance_execute=quux $INSTANCE_ID -- $COMMAND\n')
        fixture = self.useFixture(command.get_run_command(test_ids=['1']))
        fixture.list_tests()
        self.assertEqual(set([_b('returned'), _b('instances')]), command._instances)
        self.assertEqual(set([]), command._allocated_instances)
        self.assertThat(ui.outputs, MatchesAny(Equals([
            ('values', [('running', 'provision -c 2')]),
            ('popen', ('provision -c 2',), {'shell': True, 'stdout': -1}),
            ('communicate',),
            ('values', [('running', 'quux instances -- foo --list whoo yea')]),
            ('popen',('quux instances -- foo --list whoo yea',),
             {'shell': True, 'stdin': -1, 'stdout': -1}),
            ('communicate',)]), Equals([
            ('values', [('running', 'provision -c 2')]),
            ('popen', ('provision -c 2',), {'shell': True, 'stdout': -1}),
            ('communicate',),
            ('values', [('running', 'quux returned -- foo --list whoo yea')]),
            ('popen',('quux returned -- foo --list whoo yea',),
             {'shell': True, 'stdin': -1, 'stdout': -1}),
            ('communicate',)])))

    def test_list_tests_uses_instances(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n'
            'instance_execute=quux $INSTANCE_ID -- $COMMAND\n')
        fixture = self.useFixture(command.get_run_command())
        command._instances.add(_b('bar'))
        fixture.list_tests()
        self.assertEqual(set([_b('bar')]), command._instances)
        self.assertEqual(set([]), command._allocated_instances)
        self.assertEqual([
            ('values', [('running', 'quux bar -- foo --list whoo yea')]),
            ('popen', ('quux bar -- foo --list whoo yea',),
             {'shell': True, 'stdin': -1, 'stdout': -1}), ('communicate',)],
            ui.outputs)

    def test_list_tests_cmd(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        expected_cmd = 'foo --list whoo yea'
        self.assertEqual(expected_cmd, fixture.list_cmd)

    def test_list_tests_parsing(self):
        buffer = BytesIO()
        stream = subunit.StreamResultToBytes(buffer)
        stream.status(test_id='returned', test_status='exists')
        stream.status(test_id='ids', test_status='exists')
        subunit_bytes = buffer.getvalue()
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_outputs = [subunit_bytes]
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertEqual(set(['returned', 'ids']), set(fixture.list_tests()))

    def test_list_tests_nonzero_exit(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_results = [1]
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertThat(lambda:fixture.list_tests(), raises(ValueError))

    def test_partition_tests_smoke(self):
        repo = memory.RepositoryFactory().initialise('memory:')
        # Seed with 1 slow and 2 tests making up 2/3 the time.
        result = repo.get_inserter()
        result.startTestRun()
        run_timed("slow", 3, result)
        run_timed("fast1", 1, result)
        run_timed("fast2", 1, result)
        result.stopTestRun()
        ui, command = self.get_test_ui_and_cmd(repository=repo)
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST $LISTOPT\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        # partitioning by two generates 'slow' and the two fast ones as partitions
        # flushed out by equal numbers of unknown duration tests.
        test_ids = frozenset(['slow', 'fast1', 'fast2', 'unknown1', 'unknown2',
            'unknown3', 'unknown4'])
        partitions = fixture.partition_tests(test_ids, 2)
        self.assertTrue('slow' in partitions[0])
        self.assertFalse('fast1' in partitions[0])
        self.assertFalse('fast2' in partitions[0])
        self.assertFalse('slow' in partitions[1])
        self.assertTrue('fast1' in partitions[1])
        self.assertTrue('fast2' in partitions[1])
        self.assertEqual(3, len(partitions[0]))
        self.assertEqual(4, len(partitions[1]))

    def test_partition_tests_914359(self):
        # When two partitions have the same duration, timed tests should be
        # appended to the shortest partition. In theory this doesn't matter,
        # but in practice, if a test is recorded with 0 duration (e.g. due to a
        # bug), it is better to have them split out rather than all in one
        # partition. 0 duration tests are unlikely to really be 0 duration.
        repo = memory.RepositoryFactory().initialise('memory:')
        # Seed with two 0-duration tests.
        result = repo.get_inserter()
        result.startTestRun()
        run_timed("zero1", 0, result)
        run_timed("zero2", 0, result)
        result.stopTestRun()
        ui, command = self.get_test_ui_and_cmd(repository=repo)
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n')
        fixture = self.useFixture(command.get_run_command())
        # partitioning by two should generate two one-entry partitions.
        test_ids = frozenset(['zero1', 'zero2'])
        partitions = fixture.partition_tests(test_ids, 2)
        self.assertEqual(1, len(partitions[0]))
        self.assertEqual(1, len(partitions[1]))

    def test_partition_tests_with_grouping(self):
        repo = memory.RepositoryFactory().initialise('memory:')
        result = repo.get_inserter()
        result.startTestRun()
        run_timed("TestCase1.slow", 3, result)
        run_timed("TestCase2.fast1", 1, result)
        run_timed("TestCase2.fast2", 1, result)
        result.stopTestRun()
        ui, command = self.get_test_ui_and_cmd(repository=repo)
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST $LISTOPT\n'
            'test_list_option=--list\n')
        fixture = self.useFixture(command.get_run_command())
        test_ids = frozenset(['TestCase1.slow', 'TestCase1.fast',
                              'TestCase1.fast2', 'TestCase2.fast1',
                              'TestCase3.test1', 'TestCase3.test2',
                              'TestCase2.fast2', 'TestCase4.test',
                              'testdir.testfile.TestCase5.test'])
        regex = 'TestCase[0-5]'
        def group_id(test_id, regex=re.compile('TestCase[0-5]')):
            match = regex.match(test_id)
            if match:
                return match.group(0)
        # There isn't a public way to define a group callback [as yet].
        fixture._group_callback = group_id
        partitions = fixture.partition_tests(test_ids, 2)
        # Timed groups are deterministic:
        self.assertTrue('TestCase2.fast1' in partitions[0])
        self.assertTrue('TestCase2.fast2' in partitions[0])
        self.assertTrue('TestCase1.slow' in partitions[1])
        self.assertTrue('TestCase1.fast' in partitions[1])
        self.assertTrue('TestCase1.fast2' in partitions[1])
        # Untimed groups just need to be kept together:
        if 'TestCase3.test1' in partitions[0]:
            self.assertTrue('TestCase3.test2' in partitions[0])
        if 'TestCase4.test' not in partitions[0]:
            self.assertTrue('TestCase4.test' in partitions[1])
        if 'testdir.testfile.TestCase5.test' not in partitions[0]:
            self.assertTrue('testdir.testfile.TestCase5.test' in partitions[1])

    def test_run_tests_with_instances(self):
        # when there are instances and no instance_execute, run_tests acts as
        # normal.
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n')
        command._instances.update([_b('foo'), _b('bar')])
        fixture = self.useFixture(command.get_run_command())
        procs = fixture.run_tests()
        self.assertEqual([
            ('values', [('running', 'foo ')]),
            ('popen', ('foo ',), {'shell': True, 'stdin': -1, 'stdout': -1})],
            ui.outputs)

    def test_run_tests_with_existing_instances_configured(self):
        # when there are instances present, they are pulled out for running
        # tests.
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n'
            'instance_execute=quux $INSTANCE_ID -- $COMMAND\n')
        command._instances.add(_b('bar'))
        fixture = self.useFixture(command.get_run_command(test_ids=['1']))
        procs = fixture.run_tests()
        self.assertEqual([
            ('values', [('running', 'quux bar -- foo 1')]),
            ('popen', ('quux bar -- foo 1',),
             {'shell': True, 'stdin': -1, 'stdout': -1})],
            ui.outputs)
        # No --parallel, so the one instance should have been allocated.
        self.assertEqual(set([_b('bar')]), command._instances)
        self.assertEqual(set([_b('bar')]), command._allocated_instances)
        # And after the process is run, bar is returned for re-use.
        procs[0].stdout.read()
        procs[0].wait()
        self.assertEqual(0, procs[0].returncode)
        self.assertEqual(set([_b('bar')]), command._instances)
        self.assertEqual(set(), command._allocated_instances)
        
    def test_run_tests_allocated_instances_skipped(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDLIST\n'
            'instance_execute=quux $INSTANCE_ID -- $COMMAND\n')
        command._instances.update([_b('bar'), _b('baz')])
        command._allocated_instances.add(_b('baz'))
        fixture = self.useFixture(command.get_run_command(test_ids=['1']))
        procs = fixture.run_tests()
        self.assertEqual([
            ('values', [('running', 'quux bar -- foo 1')]),
            ('popen', ('quux bar -- foo 1',),
             {'shell': True, 'stdin': -1, 'stdout': -1})],
            ui.outputs)
        # No --parallel, so the one instance should have been allocated.
        self.assertEqual(set([_b('bar'), _b('baz')]), command._instances)
        self.assertEqual(set([_b('bar'), _b('baz')]), command._allocated_instances)
        # And after the process is run, bar is returned for re-use.
        procs[0].wait()
        procs[0].stdout.read()
        self.assertEqual(0, procs[0].returncode)
        self.assertEqual(set([_b('bar'), _b('baz')]), command._instances)
        self.assertEqual(set([_b('baz')]), command._allocated_instances)

    def test_run_tests_list_file_in_FILES(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\ntest_command=foo $IDFILE\n'
            'instance_execute=quux $INSTANCE_ID $FILES -- $COMMAND\n')
        command._instances.add(_b('bar'))
        fixture = self.useFixture(command.get_run_command(test_ids=['1']))
        list_file = fixture.list_file_name
        procs = fixture.run_tests()
        expected_cmd = 'quux bar %s -- foo %s' % (list_file, list_file)
        self.assertEqual([
            ('values', [('running', expected_cmd)]),
            ('popen', (expected_cmd,),
             {'shell': True, 'stdin': -1, 'stdout': -1})],
            ui.outputs)
        # No --parallel, so the one instance should have been allocated.
        self.assertEqual(set([_b('bar')]), command._instances)
        self.assertEqual(set([_b('bar')]), command._allocated_instances)
        # And after the process is run, bar is returned for re-use.
        procs[0].stdout.read()
        self.assertEqual(0, procs[0].returncode)
        self.assertEqual(set([_b('bar')]), command._instances)
        self.assertEqual(set(), command._allocated_instances)

    def test_filter_tags_parsing(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config('[DEFAULT]\nfilter_tags=foo bar\n')
        self.assertEqual(set(['foo', 'bar']), command.get_filter_tags())

    def test_callout_concurrency(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_outputs = [_b('4')]
        self.set_config(
            '[DEFAULT]\ntest_run_concurrency=probe\n'
            'test_command=foo\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertEqual(4, fixture.callout_concurrency())
        self.assertEqual([
            ('popen', ('probe',), {'shell': True, 'stdin': -1, 'stdout': -1}),
            ('communicate',)], ui.outputs)

    def test_callout_concurrency_failed(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_results = [1]
        self.set_config(
            '[DEFAULT]\ntest_run_concurrency=probe\n'
            'test_command=foo\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertThat(lambda:fixture.callout_concurrency(), raises(
            ValueError("test_run_concurrency failed: exit code 1, stderr=''")))
        self.assertEqual([
            ('popen', ('probe',), {'shell': True, 'stdin': -1, 'stdout': -1}),
            ('communicate',)], ui.outputs)

    def test_callout_concurrency_not_set(self):
        ui, command = self.get_test_ui_and_cmd()
        self.set_config(
            '[DEFAULT]\n'
            'test_command=foo\n')
        fixture = self.useFixture(command.get_run_command())
        self.assertEqual(None, fixture.callout_concurrency())
        self.assertEqual([], ui.outputs)

    def test_filter_tests_by_regex_only(self):
        buffer = BytesIO()
        stream = subunit.StreamResultToBytes(buffer)
        stream.status(test_id='returned', test_status='exists')
        stream.status(test_id='ids', test_status='exists')
        subunit_bytes = buffer.getvalue()
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_outputs = [subunit_bytes]
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        filters = ['return']
        fixture = self.useFixture(command.get_run_command(test_filters=filters))
        self.assertEqual(['returned'], fixture.test_ids)

    def test_filter_tests_by_regex_supplied_ids(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_outputs = [_b('returned\nids\n')]
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        filters = ['return']
        fixture = self.useFixture(command.get_run_command(
            test_ids=['return', 'of', 'the', 'king'], test_filters=filters))
        self.assertEqual(['return'], fixture.test_ids)

    def test_filter_tests_by_regex_supplied_ids_multi_match(self):
        ui, command = self.get_test_ui_and_cmd()
        ui.proc_outputs = [_b('returned\nids\n')]
        self.set_config(
            '[DEFAULT]\ntest_command=foo $LISTOPT $IDLIST\ntest_id_list_default=whoo yea\n'
            'test_list_option=--list\n')
        filters = ['return']
        fixture = self.useFixture(command.get_run_command(
            test_ids=['return', 'of', 'the', 'king', 'thereisnoreturn'], test_filters=filters))
        self.assertEqual(['return', 'thereisnoreturn'], fixture.test_ids)