from testtools import TestCase
from mock import Mock

from troveclient import common


class CommonTest(TestCase):

    def test_check_for_exceptions(self):
        status = [400, 422, 500]
        for s in status:
            resp = Mock()
            resp.status_code = s
            self.assertRaises(Exception,
                              common.check_for_exceptions, resp, "body")

    def test_limit_url(self):
        url_ = "test-url"
        limit_ = None
        marker_ = None
        self.assertEqual(url_, common.limit_url(url_))

        limit_ = "test-limit"
        marker_ = "test-marker"
        expected = "test-url?marker=test-marker&limit=test-limit"
        self.assertEqual(expected,
                         common.limit_url(url_, limit=limit_, marker=marker_))


class PaginatedTest(TestCase):

    def setUp(self):
        super(PaginatedTest, self).setUp()
        self.items_ = ["item1", "item2"]
        self.next_marker_ = "next-marker"
        self.links_ = ["link1", "link2"]
        self.pgn = common.Paginated(self.items_, self.next_marker_,
                                    self.links_)

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

    def test___init__(self):
        self.assertEqual(self.items_, self.pgn.items)
        self.assertEqual(self.next_marker_, self.pgn.next)
        self.assertEqual(self.links_, self.pgn.links)

    def test___len__(self):
        self.assertEqual(len(self.items_), self.pgn.__len__())

    def test___iter__(self):
        itr_expected = self.items_.__iter__()
        itr = self.pgn.__iter__()
        self.assertEqual(itr_expected.next(), itr.next())
        self.assertEqual(itr_expected.next(), itr.next())
        self.assertRaises(StopIteration, itr_expected.next)
        self.assertRaises(StopIteration, itr.next)

    def test___getitem__(self):
        self.assertEqual(self.items_[0], self.pgn.__getitem__(0))

    def test___setitem__(self):
        self.pgn.__setitem__(0, "new-item")
        self.assertEqual("new-item", self.pgn.items[0])

    def test___delitem(self):
        del self.pgn[0]
        self.assertEqual(1, self.pgn.__len__())

    def test___reversed__(self):
        itr = self.pgn.__reversed__()
        expected = ["item2", "item1"]
        self.assertEqual("item2", itr.next())
        self.assertEqual("item1", itr.next())
        self.assertRaises(StopIteration, itr.next)

    def test___contains__(self):
        self.assertTrue(self.pgn.__contains__("item1"))
        self.assertTrue(self.pgn.__contains__("item2"))
        self.assertFalse(self.pgn.__contains__("item3"))