from unittest import TestCase
from geometry.point import Point
from geometry.vector import Vector

class TestPoint(TestCase):
    def setUp(self):
        self.origin = Point((0, 0))
        self.a = Point((4, 0))
        self.b = Point((0, 3))
        self.c = Point((5, 2))
        self.v = Vector((1, 2))

    def test_init_with_none(self):
        origin = Point()
        self.assertEqual(origin.x, 0)

    def test_init_with_pair(self):
        p = Point((4, 2))
        self.assertEqual(p.x, 4)

    def test_init_with_vector(self):
        self.assertEqual(self.a, Point(Vector(self.a)))

    def test_string_representation(self):
        self.assertEqual(str(self.a), "(4, 0)")

    def test_equality(self):
        self.assertEqual(self.a, self.a)
        self.assertNotEqual(self.a, self.b)

    def test_addition_with_vector(self):
        self.assertEqual(self.a + self.v, self.c)

    def test_addition_with_invalid_type(self):
        with self.assertRaises(TypeError):
            self.a + self.a

    def test_subtraction_with_point(self):
        self.assertEqual(self.c - self.a, self.v)

    def test_subtraction_with_vector(self):
        self.assertEqual(self.c - self.v, self.a)

    def test_subtraction_with_invalid_type(self):
        with self.assertRaises(TypeError):
            self.a - 4