def test_messages_0(self):
player = Player("PlayerA")
player.sends("A")
# First test count.
self.assertEqual(1, player.messages_count(), "1 message")
# Now test message contents.
self.assertEqual(["A"], player.messages)
player.sends("B")
# First test count.
self.assertEqual(2, player.messages_count(), "2 messages")
# Now test message contents.
self.assertEqual(["A", "B"], player.messages)
player.sends("C")
# First test count.
self.assertEqual(3, player.messages_count(), "3 messages")
# Now test message contents.
self.assertEqual(["A", "B", "C"], player.messages)
