import os
import sys
import unittest

import StringIO as stringio

import mock


# We have to do this craziness because 'import koji' is ambiguous.  Is it the
# koji module, or the koji cli module.  Jump through hoops accordingly.
# http://stackoverflow.com/questions/67631/how-to-import-a-module-given-the-full-path
CLI_FILENAME = os.path.dirname(__file__) + "/../../cli/koji"
if sys.version_info[0] >= 3:
    import importlib.util
    spec = importlib.util.spec_from_file_location("koji_cli", CLI_FILENAME)
    cli = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(cli)
else:
    import imp
    cli = imp.load_source('koji_cli', CLI_FILENAME)


class TestListCommands(unittest.TestCase):
    def setUp(self):
        self.options = mock.MagicMock()
        self.session = mock.MagicMock()
        self.args = mock.MagicMock()
        self.original_parser = cli.OptionParser
        cli.OptionParser = mock.MagicMock()
        self.parser = cli.OptionParser.return_value
        cli.options = self.options # globals!!!

    def tearDown(self):
        cli.OptionParser = self.original_parser

    # Show long diffs in error output...
    maxDiff = None

    @mock.patch('sys.stdout', new_callable=stringio.StringIO)
    def test_handle_runroot(self, stdout):
        tag = 'tag'
        arch = 'arch'
        command = 'command'
        arguments = [tag, arch, command]
        options = mock.MagicMock()
        options.admin = True
        self.parser.parse_args.return_value = [options, arguments]

        # Mock out the xmlrpc server
        self.session.getTaskInfo.return_value = {'state': 1}
        self.session.downloadTaskOutput.return_value = 'task output'
        self.session.listTaskOutput.return_value = ['runroot.log']
        self.session.runroot.return_value = 1

        # Run it and check immediate output
        cli.handle_runroot(self.options, self.session, self.args)
        actual = stdout.getvalue()
        actual = actual.replace('nosetests', 'koji')
        expected = 'successfully connected to hub\n1\ntask output'
        self.assertMultiLineEqual(actual, expected)

        # Finally, assert that things were called as we expected.
        self.session.getTaskInfo.assert_called_once_with(1)
        self.session.listTaskOutput.assert_called_once_with(1)
        self.session.downloadTaskOutput.assert_called_once_with(1, 'runroot.log')
        self.session.runroot.assert_called_once_with(
            tag, arch, command, repo_id=mock.ANY, weight=mock.ANY,
            mounts=mock.ANY, packages=mock.ANY, skip_setarch=mock.ANY,
            channel=mock.ANY,
        )