# Copyright 2013 OpenStack Foundation
# Copyright (C) 2013 Yahoo! Inc.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

import argparse
from collections import OrderedDict
import hashlib
import io
import logging
import os
import sys
import traceback
from unittest import mock
import uuid

import fixtures
from keystoneauth1 import exceptions as ks_exc
from keystoneauth1 import fixture as ks_fixture
from requests_mock.contrib import fixture as rm_fixture

from glanceclient.common import utils
from glanceclient import exc
from glanceclient import shell as openstack_shell
from glanceclient.tests.unit.v2.fixtures import image_show_fixture
from glanceclient.tests.unit.v2.fixtures import image_versions_fixture
from glanceclient.tests import utils as testutils

# NOTE (esheffield) Used for the schema caching tests
from glanceclient.v2 import schemas as schemas
import json


DEFAULT_IMAGE_URL = 'http://127.0.0.1:9292/'
DEFAULT_IMAGE_URL_INTERNAL = 'http://127.0.0.1:9191/'
DEFAULT_USERNAME = 'username'
DEFAULT_PASSWORD = 'password'
DEFAULT_TENANT_ID = 'tenant_id'
DEFAULT_TENANT_NAME = 'tenant_name'
DEFAULT_PROJECT_ID = '0123456789'
DEFAULT_USER_DOMAIN_NAME = 'user_domain_name'
DEFAULT_UNVERSIONED_AUTH_URL = 'http://127.0.0.1:5000/'
DEFAULT_V2_AUTH_URL = '%sv2.0' % DEFAULT_UNVERSIONED_AUTH_URL
DEFAULT_V3_AUTH_URL = '%sv3' % DEFAULT_UNVERSIONED_AUTH_URL
DEFAULT_AUTH_TOKEN = ' 3bcc3d3a03f44e3d8377f9247b0ad155'
TEST_SERVICE_URL = 'http://127.0.0.1:5000/'
DEFAULT_SERVICE_TYPE = 'image'
DEFAULT_ENDPOINT_TYPE = 'public'

FAKE_V2_ENV = {'OS_USERNAME': DEFAULT_USERNAME,
               'OS_PASSWORD': DEFAULT_PASSWORD,
               'OS_TENANT_NAME': DEFAULT_TENANT_NAME,
               'OS_AUTH_URL': DEFAULT_V2_AUTH_URL,
               'OS_IMAGE_URL': DEFAULT_IMAGE_URL}

FAKE_V3_ENV = {'OS_USERNAME': DEFAULT_USERNAME,
               'OS_PASSWORD': DEFAULT_PASSWORD,
               'OS_PROJECT_ID': DEFAULT_PROJECT_ID,
               'OS_USER_DOMAIN_NAME': DEFAULT_USER_DOMAIN_NAME,
               'OS_AUTH_URL': DEFAULT_V3_AUTH_URL,
               'OS_IMAGE_URL': DEFAULT_IMAGE_URL}

FAKE_V4_ENV = {'OS_USERNAME': DEFAULT_USERNAME,
               'OS_PASSWORD': DEFAULT_PASSWORD,
               'OS_PROJECT_ID': DEFAULT_PROJECT_ID,
               'OS_USER_DOMAIN_NAME': DEFAULT_USER_DOMAIN_NAME,
               'OS_AUTH_URL': DEFAULT_V3_AUTH_URL,
               'OS_SERVICE_TYPE': DEFAULT_SERVICE_TYPE,
               'OS_ENDPOINT_TYPE': DEFAULT_ENDPOINT_TYPE,
               'OS_AUTH_TOKEN': DEFAULT_AUTH_TOKEN}

TOKEN_ID = uuid.uuid4().hex

V2_TOKEN = ks_fixture.V2Token(token_id=TOKEN_ID)
V2_TOKEN.set_scope()
_s = V2_TOKEN.add_service('image', name='glance')
_s.add_endpoint(DEFAULT_IMAGE_URL)

V3_TOKEN = ks_fixture.V3Token()
V3_TOKEN.set_project_scope()
_s = V3_TOKEN.add_service('image', name='glance')
_s.add_standard_endpoints(public=DEFAULT_IMAGE_URL,
                          internal=DEFAULT_IMAGE_URL_INTERNAL)


class ShellTest(testutils.TestCase):
    # auth environment to use
    auth_env = FAKE_V2_ENV.copy()
    # expected auth plugin to invoke
    token_url = DEFAULT_V2_AUTH_URL + '/tokens'

    # Patch os.environ to avoid required auth info
    def make_env(self, exclude=None):
        env = dict((k, v) for k, v in self.auth_env.items() if k != exclude)
        self.useFixture(fixtures.MonkeyPatch('os.environ', env))

    def setUp(self):
        super(ShellTest, self).setUp()
        global _old_env
        _old_env, os.environ = os.environ, self.auth_env

        self.requests = self.useFixture(rm_fixture.Fixture())

        json_list = ks_fixture.DiscoveryList(DEFAULT_UNVERSIONED_AUTH_URL)
        self.requests.get(DEFAULT_UNVERSIONED_AUTH_URL,
                          json=json_list,
                          status_code=300)

        json_v2 = {'version': ks_fixture.V2Discovery(DEFAULT_V2_AUTH_URL)}
        self.requests.get(DEFAULT_V2_AUTH_URL, json=json_v2)

        json_v3 = {'version': ks_fixture.V3Discovery(DEFAULT_V3_AUTH_URL)}
        self.requests.get(DEFAULT_V3_AUTH_URL, json=json_v3)

        self.v2_auth = self.requests.post(DEFAULT_V2_AUTH_URL + '/tokens',
                                          json=V2_TOKEN)

        headers = {'X-Subject-Token': TOKEN_ID}
        self.v3_auth = self.requests.post(DEFAULT_V3_AUTH_URL + '/auth/tokens',
                                          headers=headers,
                                          json=V3_TOKEN)

        global shell, _shell, assert_called, assert_called_anytime
        _shell = openstack_shell.OpenStackImagesShell()
        shell = lambda cmd: _shell.main(cmd.split())

    def tearDown(self):
        super(ShellTest, self).tearDown()
        global _old_env
        os.environ = _old_env

    def shell(self, argstr, exitcodes=(0,)):
        orig = sys.stdout
        orig_stderr = sys.stderr
        try:
            sys.stdout = io.StringIO()
            sys.stderr = io.StringIO()
            _shell = openstack_shell.OpenStackImagesShell()
            _shell.main(argstr.split())
        except SystemExit:
            exc_type, exc_value, exc_traceback = sys.exc_info()
            self.assertIn(exc_value.code, exitcodes)
        finally:
            stdout = sys.stdout.getvalue()
            sys.stdout.close()
            sys.stdout = orig
            stderr = sys.stderr.getvalue()
            sys.stderr.close()
            sys.stderr = orig_stderr
        return (stdout, stderr)

    def test_help_unknown_command(self):
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2 help foofoo'
        self.assertRaises(exc.CommandError, shell.main, argstr.split())

    @mock.patch('sys.stdout', io.StringIO())
    @mock.patch('sys.stderr', io.StringIO())
    @mock.patch('sys.argv', ['glance', 'help', 'foofoo'])
    def test_no_stacktrace_when_debug_disabled(self):
        with mock.patch.object(traceback, 'print_exc') as mock_print_exc:
            try:
                openstack_shell.main()
            except SystemExit:
                pass
            self.assertFalse(mock_print_exc.called)

    @mock.patch('sys.stdout', io.StringIO())
    @mock.patch('sys.stderr', io.StringIO())
    @mock.patch('sys.argv', ['glance', 'help', 'foofoo'])
    def test_stacktrace_when_debug_enabled_by_env(self):
        old_environment = os.environ.copy()
        os.environ = {'GLANCECLIENT_DEBUG': '1'}
        try:
            with mock.patch.object(traceback, 'print_exc') as mock_print_exc:
                try:
                    openstack_shell.main()
                except SystemExit:
                    pass
                self.assertTrue(mock_print_exc.called)
        finally:
            os.environ = old_environment

    @mock.patch('sys.stdout', io.StringIO())
    @mock.patch('sys.stderr', io.StringIO())
    @mock.patch('sys.argv', ['glance', '--debug', 'help', 'foofoo'])
    def test_stacktrace_when_debug_enabled(self):
        with mock.patch.object(traceback, 'print_exc') as mock_print_exc:
            try:
                openstack_shell.main()
            except SystemExit:
                pass
            self.assertTrue(mock_print_exc.called)

    def test_help(self):
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2 help'
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main(argstr.split())
            self.assertEqual(0, actual)
            self.assertFalse(et_mock.called)

    def test_help_no_subcommand(self):
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2'
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main(argstr.split())
            self.assertEqual(0, actual)
            self.assertFalse(et_mock.called)

    def test_blank_call(self):
        shell = openstack_shell.OpenStackImagesShell()
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main('')
            self.assertEqual(0, actual)
            self.assertFalse(et_mock.called)

    def test_help_on_subcommand_error(self):
        self.assertRaises(exc.CommandError, shell,
                          '--os-image-api-version 2 help bad')

    def test_help_v2_no_schema(self):
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2 help image-create'
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main(argstr.split())
            self.assertEqual(0, actual)
            self.assertNotIn('<unavailable>', actual)
            self.assertFalse(et_mock.called)

        argstr = '--os-image-api-version 2 help md-namespace-create'
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main(argstr.split())
            self.assertEqual(0, actual)
            self.assertNotIn('<unavailable>', actual)
            self.assertFalse(et_mock.called)

        argstr = '--os-image-api-version 2 help md-resource-type-associate'
        with mock.patch.object(shell, '_get_keystone_auth_plugin') as et_mock:
            actual = shell.main(argstr.split())
            self.assertEqual(0, actual)
            self.assertNotIn('<unavailable>', actual)
            self.assertFalse(et_mock.called)

    def test_get_base_parser(self):
        test_shell = openstack_shell.OpenStackImagesShell()
        # NOTE(stevemar): Use the current sys.argv for base_parser since it
        # doesn't matter for this test, it just needs to initialize the CLI
        actual_parser = test_shell.get_base_parser(sys.argv)
        description = 'Command-line interface to the OpenStack Images API.'
        expected = argparse.ArgumentParser(
            prog='glance', usage=None,
            description=description,
            conflict_handler='error',
            add_help=False,
            formatter_class=openstack_shell.HelpFormatter,)
        # NOTE(guochbo): Can't compare ArgumentParser instances directly
        # Convert ArgumentPaser to string first.
        self.assertEqual(str(expected), str(actual_parser))

    @mock.patch.object(openstack_shell.OpenStackImagesShell,
                       '_get_versioned_client')
    def test_cert_and_key_args_interchangeable(self,
                                               mock_versioned_client):
        # make sure --os-cert and --os-key are passed correctly
        args = ('--os-image-api-version 2 '
                '--os-cert mycert '
                '--os-key mykey image-list')
        shell(args)
        assert mock_versioned_client.called
        ((api_version, args), kwargs) = mock_versioned_client.call_args
        self.assertEqual('mycert', args.os_cert)
        self.assertEqual('mykey', args.os_key)

    @mock.patch('glanceclient.v1.client.Client')
    def test_no_auth_with_token_and_image_url_with_v1(self, v1_client):
        # test no authentication is required if both token and endpoint url
        # are specified
        args = ('--os-image-api-version 1 --os-auth-token mytoken'
                ' --os-image-url https://image:1234/v1 image-list')
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        assert v1_client.called
        (args, kwargs) = v1_client.call_args
        self.assertEqual('mytoken', kwargs['token'])
        self.assertEqual('https://image:1234', args[0])

    @mock.patch('glanceclient.v2.client.Client')
    def test_no_auth_with_token_and_image_url_with_v2(self, v2_client):
        # test no authentication is required if both token and endpoint url
        # are specified
        args = ('--os-image-api-version 2 --os-auth-token mytoken '
                '--os-image-url https://image:1234 image-list')
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertTrue(v2_client.called)
        (args, kwargs) = v2_client.call_args
        self.assertEqual('mytoken', kwargs['token'])
        self.assertEqual('https://image:1234', args[0])

    def _assert_auth_plugin_args(self):
        # make sure our auth plugin is invoked with the correct args
        self.assertFalse(self.v3_auth.called)

        body = json.loads(self.v2_auth.last_request.body)

        self.assertEqual(self.auth_env['OS_TENANT_NAME'],
                         body['auth']['tenantName'])
        self.assertEqual(self.auth_env['OS_USERNAME'],
                         body['auth']['passwordCredentials']['username'])
        self.assertEqual(self.auth_env['OS_PASSWORD'],
                         body['auth']['passwordCredentials']['password'])

    @mock.patch.object(openstack_shell.OpenStackImagesShell, '_cache_schemas',
                       return_value=False)
    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_without_version(self,
                                                    v2_client,
                                                    cache_schemas):

        cli2 = mock.MagicMock()
        v2_client.return_value = cli2
        cli2.http_client.get.return_value = (None, {'versions':
                                                    [{'id': 'v2'}]})

        args = 'image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        # NOTE(flaper87): this currently calls auth twice since it'll
        # authenticate to get the version list *and* to execute the command.
        # This is not the ideal behavior and it should be fixed in a follow
        # up patch.

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_with_v1(self, v1_client):
        args = '--os-image-api-version 1 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(0, self.v2_auth.call_count)

    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_with_v2(self,
                                            v2_client):
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(0, self.v2_auth.call_count)

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_with_unversioned_auth_url_with_v1(
            self, v1_client):
        args = ('--os-image-api-version 1 --os-auth-url %s image-list' %
                DEFAULT_UNVERSIONED_AUTH_URL)
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())

    @mock.patch('glanceclient.v2.client.Client')
    @mock.patch.object(openstack_shell.OpenStackImagesShell, '_cache_schemas',
                       return_value=False)
    def test_auth_plugin_invocation_with_unversioned_auth_url_with_v2(
            self, v2_client, cache_schemas):
        args = ('--os-auth-url %s --os-image-api-version 2 '
                'image-list') % DEFAULT_UNVERSIONED_AUTH_URL
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())

    @mock.patch('glanceclient.Client')
    def test_endpoint_token_no_auth_req(self, mock_client):

        def verify_input(version=None, endpoint=None, *args, **kwargs):
            self.assertIn('token', kwargs)
            self.assertEqual(TOKEN_ID, kwargs['token'])
            self.assertEqual(DEFAULT_IMAGE_URL, endpoint)
            return mock.MagicMock()

        mock_client.side_effect = verify_input
        glance_shell = openstack_shell.OpenStackImagesShell()
        args = ['--os-image-api-version', '2',
                '--os-auth-token', TOKEN_ID,
                '--os-image-url', DEFAULT_IMAGE_URL,
                'image-list']

        glance_shell.main(args)
        self.assertEqual(1, mock_client.call_count)

    @mock.patch('sys.stdin', side_effect=mock.MagicMock)
    @mock.patch('getpass.getpass', side_effect=EOFError)
    @mock.patch('glanceclient.v2.client.Client')
    def test_password_prompted_ctrlD_with_v2(self, v2_client,
                                             mock_getpass, mock_stdin):
        cli2 = mock.MagicMock()
        v2_client.return_value = cli2
        cli2.http_client.get.return_value = (None, {'versions': []})

        glance_shell = openstack_shell.OpenStackImagesShell()
        self.make_env(exclude='OS_PASSWORD')
        # We should get Command Error because we mock Ctl-D.
        self.assertRaises(exc.CommandError, glance_shell.main, ['image-list'])
        # Make sure we are actually prompted.
        mock_getpass.assert_called_with('OS Password: ')

    @mock.patch(
        'glanceclient.shell.OpenStackImagesShell._get_keystone_auth_plugin')
    @mock.patch.object(openstack_shell.OpenStackImagesShell, '_cache_schemas',
                       return_value=False)
    def test_no_auth_with_proj_name(self, cache_schemas, session):
        with mock.patch('glanceclient.v2.client.Client'):
            args = ('--os-project-name myname '
                    '--os-project-domain-name mydomain '
                    '--os-project-domain-id myid '
                    '--os-image-api-version 2 image-list')
            glance_shell = openstack_shell.OpenStackImagesShell()
            glance_shell.main(args.split())
            ((args), kwargs) = session.call_args
            self.assertEqual('myname', kwargs['project_name'])
            self.assertEqual('mydomain', kwargs['project_domain_name'])
            self.assertEqual('myid', kwargs['project_domain_id'])

    @mock.patch.object(openstack_shell.OpenStackImagesShell, 'main')
    def test_shell_keyboard_interrupt(self, mock_glance_shell):
        # Ensure that exit code is 130 for KeyboardInterrupt
        try:
            mock_glance_shell.side_effect = KeyboardInterrupt()
            openstack_shell.main()
        except SystemExit as ex:
            self.assertEqual(130, ex.code)

    @mock.patch('glanceclient.common.utils.exit', side_effect=utils.exit)
    def test_shell_illegal_version(self, mock_exit):
        # Only int versions are allowed on cli
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 1.1 image-list'
        try:
            shell.main(argstr.split())
        except SystemExit as ex:
            self.assertEqual(1, ex.code)
        msg = ("Invalid API version parameter. "
               "Supported values are %s" % openstack_shell.SUPPORTED_VERSIONS)
        mock_exit.assert_called_with(msg=msg)

    @mock.patch('glanceclient.common.utils.exit', side_effect=utils.exit)
    def test_shell_unsupported_version(self, mock_exit):
        # Test an integer version which is not supported (-1)
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version -1 image-list'
        try:
            shell.main(argstr.split())
        except SystemExit as ex:
            self.assertEqual(1, ex.code)
        msg = ("Invalid API version parameter. "
               "Supported values are %s" % openstack_shell.SUPPORTED_VERSIONS)
        mock_exit.assert_called_with(msg=msg)

    @mock.patch.object(openstack_shell.OpenStackImagesShell,
                       'get_subcommand_parser')
    def test_shell_import_error_with_mesage(self, mock_parser):
        msg = 'Unable to import module xxx'
        mock_parser.side_effect = ImportError('%s' % msg)
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2 image-list'
        try:
            shell.main(argstr.split())
            self.fail('No import error returned')
        except ImportError as e:
            self.assertEqual(msg, str(e))

    @mock.patch.object(openstack_shell.OpenStackImagesShell,
                       'get_subcommand_parser')
    def test_shell_import_error_default_message(self, mock_parser):
        mock_parser.side_effect = ImportError
        shell = openstack_shell.OpenStackImagesShell()
        argstr = '--os-image-api-version 2 image-list'
        try:
            shell.main(argstr.split())
            self.fail('No import error returned')
        except ImportError as e:
            msg = 'Unable to import module. Re-run with --debug for more info.'
            self.assertEqual(msg, str(e))

    @mock.patch('glanceclient.v2.client.Client')
    @mock.patch('glanceclient.v1.images.ImageManager.list')
    def test_shell_v1_fallback_from_v2(self, v1_imgs, v2_client):
        self.make_env()
        cli2 = mock.MagicMock()
        v2_client.return_value = cli2
        cli2.http_client.get.return_value = (None, {'versions': []})
        args = 'image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertFalse(cli2.schemas.get.called)
        self.assertTrue(v1_imgs.called)

    @mock.patch.object(openstack_shell.OpenStackImagesShell,
                       '_cache_schemas')
    @mock.patch('glanceclient.v2.client.Client')
    def test_shell_no_fallback_from_v2(self, v2_client, cache_schemas):
        self.make_env()
        cli2 = mock.MagicMock()
        v2_client.return_value = cli2
        cli2.http_client.get.return_value = (None,
                                             {'versions': [{'id': 'v2'}]})
        cache_schemas.return_value = False
        args = 'image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertTrue(cli2.images.list.called)

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_without_username_with_v1(self, v1_client):
        self.make_env(exclude='OS_USERNAME')
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_without_username_with_v2(self, v2_client):
        self.make_env(exclude='OS_USERNAME')
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_without_auth_url_with_v1(self, v1_client):
        self.make_env(exclude='OS_AUTH_URL')
        args = '--os-image-api-version 1 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_without_auth_url_with_v2(self, v2_client):
        self.make_env(exclude='OS_AUTH_URL')
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_without_tenant_with_v1(self, v1_client):
        if 'OS_TENANT_NAME' in os.environ:
            self.make_env(exclude='OS_TENANT_NAME')
        if 'OS_PROJECT_ID' in os.environ:
            self.make_env(exclude='OS_PROJECT_ID')
        args = '--os-image-api-version 1 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('glanceclient.v2.client.Client')
    @mock.patch.object(openstack_shell.OpenStackImagesShell, '_cache_schemas',
                       return_value=False)
    def test_auth_plugin_invocation_without_tenant_with_v2(self, v2_client,
                                                           cache_schemas):
        if 'OS_TENANT_NAME' in os.environ:
            self.make_env(exclude='OS_TENANT_NAME')
        if 'OS_PROJECT_ID' in os.environ:
            self.make_env(exclude='OS_PROJECT_ID')
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    @mock.patch('sys.argv', ['glance'])
    @mock.patch('sys.stdout', io.StringIO())
    @mock.patch('sys.stderr', io.StringIO())
    def test_main_noargs(self):
        # Ensure that main works with no command-line arguments
        try:
            openstack_shell.main()
        except SystemExit:
            self.fail('Unexpected SystemExit')

        # We expect the normal v2 usage as a result
        expected = ['Command-line interface to the OpenStack Images API',
                    'image-list',
                    'image-deactivate',
                    'location-add']
        for output in expected:
            self.assertIn(output,
                          sys.stdout.getvalue())

    @mock.patch('glanceclient.v2.client.Client')
    @mock.patch('glanceclient.v1.shell.do_image_list')
    @mock.patch('glanceclient.shell.logging.basicConfig')
    def test_setup_debug(self, conf, func, v2_client):
        cli2 = mock.MagicMock()
        v2_client.return_value = cli2
        cli2.http_client.get.return_value = (None, {'versions': []})
        args = '--debug image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        glance_logger = logging.getLogger('glanceclient')
        self.assertEqual(glance_logger.getEffectiveLevel(), logging.DEBUG)
        conf.assert_called_with(level=logging.DEBUG)

    def test_subcommand_help(self):
        # Ensure that main works with sub command help
        stdout, stderr = self.shell('help stores-delete')

        expected = 'usage: glance stores-delete --store <STORE_ID> ' \
                   '<IMAGE_ID>\n\nDelete image from specific store.' \
                   '\n\nPositional arguments:\n  <IMAGE_ID>          ' \
                   'ID of image to update.\n\nRequired arguments:\n  ' \
                   '--store <STORE_ID>  Store to delete image from.\n'
        self.assertEqual(expected, stdout)


class ShellTestWithKeystoneV3Auth(ShellTest):
    # auth environment to use
    auth_env = FAKE_V3_ENV.copy()
    token_url = DEFAULT_V3_AUTH_URL + '/auth/tokens'

    def _assert_auth_plugin_args(self):
        self.assertFalse(self.v2_auth.called)

        body = json.loads(self.v3_auth.last_request.body)
        user = body['auth']['identity']['password']['user']

        self.assertEqual(self.auth_env['OS_USERNAME'], user['name'])
        self.assertEqual(self.auth_env['OS_PASSWORD'], user['password'])
        self.assertEqual(self.auth_env['OS_USER_DOMAIN_NAME'],
                         user['domain']['name'])
        self.assertEqual(self.auth_env['OS_PROJECT_ID'],
                         body['auth']['scope']['project']['id'])

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_with_v1(self, v1_client):
        args = '--os-image-api-version 1 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(0, self.v3_auth.call_count)

    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_with_v2(self, v2_client):
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(0, self.v3_auth.call_count)

    @mock.patch('keystoneauth1.discover.Discover',
                side_effect=ks_exc.ClientException())
    def test_api_discovery_failed_with_unversioned_auth_url(self,
                                                            discover):
        args = ('--os-image-api-version 2 --os-auth-url %s image-list'
                % DEFAULT_UNVERSIONED_AUTH_URL)
        glance_shell = openstack_shell.OpenStackImagesShell()
        self.assertRaises(exc.CommandError, glance_shell.main, args.split())

    def test_bash_completion(self):
        stdout, stderr = self.shell('--os-image-api-version 2 bash_completion')
        # just check we have some output
        required = [
            '--status',
            'image-create',
            'help',
            '--size']
        for r in required:
            self.assertIn(r, stdout.split())
        avoided = [
            'bash_completion',
            'bash-completion']
        for r in avoided:
            self.assertNotIn(r, stdout.split())


class ShellTestWithNoOSImageURLPublic(ShellTestWithKeystoneV3Auth):
    # auth environment to use
    # default uses public
    auth_env = FAKE_V4_ENV.copy()

    def setUp(self):
        super(ShellTestWithNoOSImageURLPublic, self).setUp()
        self.image_url = DEFAULT_IMAGE_URL
        self.requests.get(DEFAULT_IMAGE_URL + 'v2/images',
                          text='{"images": []}')

    @mock.patch('glanceclient.v1.client.Client')
    def test_auth_plugin_invocation_with_v1(self, v1_client):
        args = '--os-image-api-version 1 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(1, self.v3_auth.call_count)
        self._assert_auth_plugin_args()

    @mock.patch('glanceclient.v2.client.Client')
    def test_auth_plugin_invocation_with_v2(self, v2_client):
        args = '--os-image-api-version 2 image-list'
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(1, self.v3_auth.call_count)
        self._assert_auth_plugin_args()

    @mock.patch('glanceclient.v2.client.Client')
    def test_endpoint_from_interface(self, v2_client):
        args = ('--os-image-api-version 2 image-list')
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        assert v2_client.called
        (args, kwargs) = v2_client.call_args
        self.assertEqual(self.image_url, kwargs['endpoint_override'])

    def test_endpoint_real_from_interface(self):
        args = ('--os-image-api-version 2 image-list')
        glance_shell = openstack_shell.OpenStackImagesShell()
        glance_shell.main(args.split())
        self.assertEqual(self.requests.request_history[2].url,
                         self.image_url + "v2/images?limit=200&"
                         "sort_key=name&sort_dir=asc")


class ShellTestWithNoOSImageURLInternal(ShellTestWithNoOSImageURLPublic):
    # auth environment to use
    # this uses internal
    FAKE_V5_ENV = FAKE_V4_ENV.copy()
    FAKE_V5_ENV['OS_ENDPOINT_TYPE'] = 'internal'
    auth_env = FAKE_V5_ENV.copy()

    def setUp(self):
        super(ShellTestWithNoOSImageURLPublic, self).setUp()
        self.image_url = DEFAULT_IMAGE_URL_INTERNAL
        self.requests.get(DEFAULT_IMAGE_URL_INTERNAL + 'v2/images',
                          text='{"images": []}')


class ShellCacheSchemaTest(testutils.TestCase):
    def setUp(self):
        super(ShellCacheSchemaTest, self).setUp()
        self._mock_client_setup()
        self._mock_shell_setup()
        self.cache_dir = '/dir_for_cached_schema'
        self.os_auth_url = 'http://localhost:5000/v2'
        url_hex = hashlib.sha1(self.os_auth_url.encode('utf-8')).hexdigest()
        self.prefix_path = (self.cache_dir + '/' + url_hex)
        self.cache_files = [self.prefix_path + '/image_schema.json',
                            self.prefix_path + '/namespace_schema.json',
                            self.prefix_path + '/resource_type_schema.json']

    def tearDown(self):
        super(ShellCacheSchemaTest, self).tearDown()

    def _mock_client_setup(self):
        self.schema_dict = {
            'name': 'image',
            'properties': {
                'name': {'type': 'string', 'description': 'Name of image'},
            },
        }

        self.client = mock.Mock()
        schema_odict = OrderedDict(self.schema_dict)
        self.client.schemas.get.return_value = schemas.Schema(schema_odict)

    def _mock_shell_setup(self):
        self.shell = openstack_shell.OpenStackImagesShell()
        self.shell._get_versioned_client = mock.create_autospec(
            self.shell._get_versioned_client, return_value=self.client,
            spec_set=True
        )

    def _make_args(self, args):
        class Args(object):
            def __init__(self, entries):
                self.__dict__.update(entries)

        return Args(args)

    @mock.patch('builtins.open', new=mock.mock_open(), create=True)
    @mock.patch('os.path.exists', return_value=True)
    def test_cache_schemas_gets_when_forced(self, exists_mock):
        options = {
            'get_schema': True,
            'os_auth_url': self.os_auth_url
        }
        schema_odict = OrderedDict(self.schema_dict)

        args = self._make_args(options)
        client = self.shell._get_versioned_client('2', args)
        self.shell._cache_schemas(args, client, home_dir=self.cache_dir)

        self.assertEqual(12, open.mock_calls.__len__())
        self.assertEqual(mock.call(self.cache_files[0], 'w'),
                         open.mock_calls[0])
        self.assertEqual(mock.call(self.cache_files[1], 'w'),
                         open.mock_calls[4])
        actual = json.loads(open.mock_calls[2][1][0])
        self.assertEqual(schema_odict, actual)
        actual = json.loads(open.mock_calls[6][1][0])
        self.assertEqual(schema_odict, actual)

    @mock.patch('builtins.open', new=mock.mock_open(), create=True)
    @mock.patch('os.path.exists', side_effect=[True, False, False, False])
    def test_cache_schemas_gets_when_not_exists(self, exists_mock):
        options = {
            'get_schema': False,
            'os_auth_url': self.os_auth_url
        }
        schema_odict = OrderedDict(self.schema_dict)

        args = self._make_args(options)
        client = self.shell._get_versioned_client('2', args)
        self.shell._cache_schemas(args, client, home_dir=self.cache_dir)

        self.assertEqual(12, open.mock_calls.__len__())
        self.assertEqual(mock.call(self.cache_files[0], 'w'),
                         open.mock_calls[0])
        self.assertEqual(mock.call(self.cache_files[1], 'w'),
                         open.mock_calls[4])
        actual = json.loads(open.mock_calls[2][1][0])
        self.assertEqual(schema_odict, actual)
        actual = json.loads(open.mock_calls[6][1][0])
        self.assertEqual(schema_odict, actual)

    @mock.patch('builtins.open', new=mock.mock_open(), create=True)
    @mock.patch('os.path.exists', return_value=True)
    def test_cache_schemas_leaves_when_present_not_forced(self, exists_mock):
        options = {
            'get_schema': False,
            'os_auth_url': self.os_auth_url
        }

        client = mock.MagicMock()
        self.shell._cache_schemas(self._make_args(options),
                                  client, home_dir=self.cache_dir)

        exists_mock.assert_has_calls([
            mock.call(self.prefix_path),
            mock.call(self.cache_files[0]),
            mock.call(self.cache_files[1]),
            mock.call(self.cache_files[2])
        ])
        self.assertEqual(4, exists_mock.call_count)
        self.assertEqual(0, open.mock_calls.__len__())

    @mock.patch('builtins.open', new=mock.mock_open(), create=True)
    @mock.patch('os.path.exists', return_value=True)
    def test_cache_schemas_leaves_auto_switch(self, exists_mock):
        options = {
            'get_schema': True,
            'os_auth_url': self.os_auth_url
        }

        self.client.schemas.get.return_value = Exception()

        client = mock.MagicMock()
        switch_version = self.shell._cache_schemas(self._make_args(options),
                                                   client,
                                                   home_dir=self.cache_dir)
        self.assertEqual(True, switch_version)


class ShellTestRequests(testutils.TestCase):
    """Shell tests using the requests mock library."""
    def _make_args(self, args):
        # NOTE(venkatesh): this conversion from a dict to an object
        # is required because the test_shell.do_xxx(gc, args) methods
        # expects the args to be attributes of an object. If passed as
        # dict directly, it throws an AttributeError.
        class Args(object):
            def __init__(self, entries):
                self.__dict__.update(entries)

        return Args(args)

    def setUp(self):
        super(ShellTestRequests, self).setUp()
        self._old_env = os.environ
        os.environ = {}

    def tearDown(self):
        super(ShellTestRequests, self).tearDown()
        os.environ = self._old_env

    def test_download_has_no_stray_output_to_stdout(self):
        """Regression test for bug 1488914"""
        saved_stdout = sys.stdout
        try:
            sys.stdout = output = testutils.FakeNoTTYStdout()
            id = image_show_fixture['id']
            self.requests = self.useFixture(rm_fixture.Fixture())
            self.requests.get('http://example.com/versions',
                              json=image_versions_fixture)

            headers = {'Content-Length': '4',
                       'Content-type': 'application/octet-stream'}
            fake = testutils.FakeResponse(headers, io.StringIO('DATA'))
            self.requests.get('http://example.com/v1/images/%s' % id,
                              raw=fake)

            self.requests.get('http://example.com/v1/images/detail'
                              '?sort_key=name&sort_dir=asc&limit=20')

            headers = {'X-Image-Meta-Id': id}
            self.requests.head('http://example.com/v1/images/%s' % id,
                               headers=headers)

            with mock.patch.object(openstack_shell.OpenStackImagesShell,
                                   '_cache_schemas') as mocked_cache_schema:
                mocked_cache_schema.return_value = True
                shell = openstack_shell.OpenStackImagesShell()
                argstr = ('--os-auth-token faketoken '
                          '--os-image-url http://example.com '
                          'image-download %s' % id)
                shell.main(argstr.split())
                self.assertTrue(mocked_cache_schema.called)
            # Ensure we have *only* image data
            self.assertEqual('DATA', output.getvalue())
        finally:
            sys.stdout = saved_stdout

    def test_v1_download_has_no_stray_output_to_stdout(self):
        """Ensure no stray print statements corrupt the image"""
        saved_stdout = sys.stdout
        try:
            sys.stdout = output = testutils.FakeNoTTYStdout()
            id = image_show_fixture['id']

            self.requests = self.useFixture(rm_fixture.Fixture())
            headers = {'X-Image-Meta-Id': id}
            self.requests.head('http://example.com/v1/images/%s' % id,
                               headers=headers)

            headers = {'Content-Length': '4',
                       'Content-type': 'application/octet-stream'}
            fake = testutils.FakeResponse(headers, io.StringIO('DATA'))
            self.requests.get('http://example.com/v1/images/%s' % id,
                              headers=headers, raw=fake)

            shell = openstack_shell.OpenStackImagesShell()
            argstr = ('--os-image-api-version 1 --os-auth-token faketoken '
                      '--os-image-url http://example.com '
                      'image-download %s' % id)
            shell.main(argstr.split())
            # Ensure we have *only* image data
            self.assertEqual('DATA', output.getvalue())
        finally:
            sys.stdout = saved_stdout

    def test_v2_download_has_no_stray_output_to_stdout(self):
        """Ensure no stray print statements corrupt the image"""
        saved_stdout = sys.stdout
        try:
            sys.stdout = output = testutils.FakeNoTTYStdout()
            id = image_show_fixture['id']
            headers = {'Content-Length': '4',
                       'Content-type': 'application/octet-stream'}
            fake = testutils.FakeResponse(headers, io.StringIO('DATA'))

            self.requests = self.useFixture(rm_fixture.Fixture())
            self.requests.get('http://example.com/v2/images/%s/file' % id,
                              headers=headers, raw=fake)
            self.requests.get('http://example.com/v2/images/%s' % id,
                              headers={'Content-type': 'application/json'},
                              json=image_show_fixture)
            shell = openstack_shell.OpenStackImagesShell()
            argstr = ('--os-image-api-version 2 --os-auth-token faketoken '
                      '--os-image-url http://example.com '
                      'image-download %s' % id)
            shell.main(argstr.split())
            # Ensure we have *only* image data
            self.assertEqual('DATA', output.getvalue())
        finally:
            sys.stdout = saved_stdout
