"""
This module provides tests for the
:py:mod:`taskresults.management.commands.fetch_taskresults` Django management
command.

"""
from __future__ import unicode_literals

try:
    from unittest.mock import patch, MagicMock
except ImportError:
    from mock import patch, MagicMock

from django.test import TestCase

from taskresults.models import TaskResult

from taskresults.management.commands.fetch_taskresults import Command


TEST_TASK_UUID = '3120f6a8-2665-4fa3-a785-79efd28bfe92'
TEST_TASK_NAME = 'test.task'
TEST_TASK_RESULT = '4ll y0ur b453 4r3 b3l0ng t0 u5'


@patch('taskresults.models.app.AsyncResult')
class FetchTaskResultsCommandTest(TestCase):

    def test_handle_unfinished(self, asyncresult):
        resultmock = MagicMock(task_id=TEST_TASK_UUID)
        sigmock = MagicMock()
        sigmock.apply_async.return_value = resultmock
        tr = TaskResult.objects.create_task_result(TEST_TASK_NAME, sigmock)
        self.assertFalse(tr.finished)
        self.assertEqual(tr.result, '')
        self.assertEqual(tr.state, '')

        aresult = asyncresult.return_value
        aresult.state = 'PENDING'
        aresult.ready.return_value = False

        Command().handle()

        tr = TaskResult.objects.get(task_id=TEST_TASK_UUID)
        self.assertTrue(asyncresult.called_with(TEST_TASK_UUID))
        self.assertTrue(aresult.ready.called_with())
        self.assertFalse(tr.finished)
        self.assertEqual(tr.result, '')
        self.assertEqual(tr.state, 'PENDING')

    def test_handle_finished(self, asyncresult):
        resultmock = MagicMock(task_id=TEST_TASK_UUID)
        sigmock = MagicMock()
        sigmock.apply_async.return_value = resultmock
        tr = TaskResult.objects.create_task_result(TEST_TASK_NAME, sigmock)
        self.assertFalse(tr.finished)
        self.assertEqual(tr.result, '')
        self.assertEqual(tr.state, '')

        aresult = asyncresult.return_value
        aresult.state = 'SUCCESS'
        aresult.ready.return_value = True
        aresult.get.return_value = TEST_TASK_RESULT

        Command().handle()

        tr = TaskResult.objects.get(task_id=TEST_TASK_UUID)
        self.assertTrue(asyncresult.called_with(TEST_TASK_UUID))
        self.assertTrue(aresult.ready.called_with())
        self.assertTrue(aresult.get.called_with())
        self.assertTrue(tr.finished)
        self.assertEqual(tr.result, TEST_TASK_RESULT)
        self.assertEqual(tr.state, 'SUCCESS')