def test_decrements_total_count_and_removes_mails_id_from_mails(self):
tag = Tag('one_more')
tag.mails = set([12])
tag.decrement(12)
self.assertNotIn(12, tag.mails)
self.assertEquals(0, tag.total)
def test_decrements_total_count_and_removes_mails_id_from_mails(self):
tag = Tag('one_more')
tag.mails = set([12])
tag.decrement(12)
self.assertNotIn(12, tag.mails)
self.assertEquals(0, tag.total)
def test_decrement_does_nothing_if_mail_has_not_the_tag(self):
tag = Tag('tag')
tag.decrement(2000)
self.assertEquals(0, tag.total)
def test_decrement_does_nothing_if_mail_has_not_the_tag(self):
tag = Tag('tag')
tag.decrement(2000)
self.assertEquals(0, tag.total)
