pygame-2.1.0/test/rect_test.py

import math
import sys
import unittest
import platform

from pygame import Rect, Vector2, get_sdl_version
from pygame.tests import test_utils


PY3 = sys.version_info >= (3, 0, 0)
SDL1 = get_sdl_version()[0] < 2
IS_PYPY = "PyPy" == platform.python_implementation()


class RectTypeTest(unittest.TestCase):
    def _assertCountEqual(self, *args, **kwargs):
        # Handle method name differences between Python versions.
        if PY3:
            self.assertCountEqual(*args, **kwargs)
        else:
            self.assertItemsEqual(*args, **kwargs)

    def testConstructionXYWidthHeight(self):
        r = Rect(1, 2, 3, 4)
        self.assertEqual(1, r.left)
        self.assertEqual(2, r.top)
        self.assertEqual(3, r.width)
        self.assertEqual(4, r.height)

    def testConstructionTopLeftSize(self):
        r = Rect((1, 2), (3, 4))
        self.assertEqual(1, r.left)
        self.assertEqual(2, r.top)
        self.assertEqual(3, r.width)
        self.assertEqual(4, r.height)

    def testCalculatedAttributes(self):
        r = Rect(1, 2, 3, 4)

        self.assertEqual(r.left + r.width, r.right)
        self.assertEqual(r.top + r.height, r.bottom)
        self.assertEqual((r.width, r.height), r.size)
        self.assertEqual((r.left, r.top), r.topleft)
        self.assertEqual((r.right, r.top), r.topright)
        self.assertEqual((r.left, r.bottom), r.bottomleft)
        self.assertEqual((r.right, r.bottom), r.bottomright)

        midx = r.left + r.width // 2
        midy = r.top + r.height // 2

        self.assertEqual(midx, r.centerx)
        self.assertEqual(midy, r.centery)
        self.assertEqual((r.centerx, r.centery), r.center)
        self.assertEqual((r.centerx, r.top), r.midtop)
        self.assertEqual((r.centerx, r.bottom), r.midbottom)
        self.assertEqual((r.left, r.centery), r.midleft)
        self.assertEqual((r.right, r.centery), r.midright)

    def test_normalize(self):
        """Ensures normalize works when width and height are both negative."""
        test_rect = Rect((1, 2), (-3, -6))
        expected_normalized_rect = (
            (test_rect.x + test_rect.w, test_rect.y + test_rect.h),
            (-test_rect.w, -test_rect.h),
        )

        test_rect.normalize()

        self.assertEqual(test_rect, expected_normalized_rect)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_normalize__positive_height(self):
        """Ensures normalize works with a negative width and a positive height.
        """
        test_rect = Rect((1, 2), (-3, 6))
        expected_normalized_rect = (
            (test_rect.x + test_rect.w, test_rect.y),
            (-test_rect.w, test_rect.h),
        )

        test_rect.normalize()

        self.assertEqual(test_rect, expected_normalized_rect)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_normalize__positive_width(self):
        """Ensures normalize works with a positive width and a negative height.
        """
        test_rect = Rect((1, 2), (3, -6))
        expected_normalized_rect = (
            (test_rect.x, test_rect.y + test_rect.h),
            (test_rect.w, -test_rect.h),
        )

        test_rect.normalize()

        self.assertEqual(test_rect, expected_normalized_rect)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_normalize__zero_height(self):
        """Ensures normalize works with a negative width and a zero height."""
        test_rect = Rect((1, 2), (-3, 0))
        expected_normalized_rect = (
            (test_rect.x + test_rect.w, test_rect.y),
            (-test_rect.w, test_rect.h),
        )

        test_rect.normalize()

        self.assertEqual(test_rect, expected_normalized_rect)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_normalize__zero_width(self):
        """Ensures normalize works with a zero width and a negative height."""
        test_rect = Rect((1, 2), (0, -6))
        expected_normalized_rect = (
            (test_rect.x, test_rect.y + test_rect.h),
            (test_rect.w, -test_rect.h),
        )

        test_rect.normalize()

        self.assertEqual(test_rect, expected_normalized_rect)

    @unittest.skipIf(IS_PYPY, "fails on pypy")
    def test_normalize__non_negative(self):
        """Ensures normalize works when width and height are both non-negative.

        Tests combinations of positive and zero values for width and height.
        The normalize method has no impact when both width and height are
        non-negative.
        """
        for size in ((3, 6), (3, 0), (0, 6), (0, 0)):
            test_rect = Rect((1, 2), size)
            expected_normalized_rect = Rect(test_rect)

            test_rect.normalize()

            self.assertEqual(test_rect, expected_normalized_rect)

    def test_x(self):
        """Ensures changing the x attribute moves the rect and does not change
           the rect's size.
        """
        expected_x = 10
        expected_y = 2
        expected_size = (3, 4)
        r = Rect((1, expected_y), expected_size)

        r.x = expected_x

        self.assertEqual(r.x, expected_x)
        self.assertEqual(r.x, r.left)
        self.assertEqual(r.y, expected_y)
        self.assertEqual(r.size, expected_size)

    def test_x__invalid_value(self):
        """Ensures the x attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.x = value

    def test_x__del(self):
        """Ensures the x attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.x

    def test_y(self):
        """Ensures changing the y attribute moves the rect and does not change
           the rect's size.
        """
        expected_x = 1
        expected_y = 20
        expected_size = (3, 4)
        r = Rect((expected_x, 2), expected_size)

        r.y = expected_y

        self.assertEqual(r.y, expected_y)
        self.assertEqual(r.y, r.top)
        self.assertEqual(r.x, expected_x)
        self.assertEqual(r.size, expected_size)

    def test_y__invalid_value(self):
        """Ensures the y attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.y = value

    def test_y__del(self):
        """Ensures the y attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.y

    def test_left(self):
        """Changing the left attribute moves the rect and does not change
           the rect's width
        """
        r = Rect(1, 2, 3, 4)
        new_left = 10

        r.left = new_left
        self.assertEqual(new_left, r.left)
        self.assertEqual(Rect(new_left, 2, 3, 4), r)

    def test_left__invalid_value(self):
        """Ensures the left attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.left = value

    def test_left__del(self):
        """Ensures the left attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.left

    def test_right(self):
        """Changing the right attribute moves the rect and does not change
           the rect's width
        """
        r = Rect(1, 2, 3, 4)
        new_right = r.right + 20
        expected_left = r.left + 20
        old_width = r.width

        r.right = new_right
        self.assertEqual(new_right, r.right)
        self.assertEqual(expected_left, r.left)
        self.assertEqual(old_width, r.width)

    def test_right__invalid_value(self):
        """Ensures the right attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.right = value

    def test_right__del(self):
        """Ensures the right attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.right

    def test_top(self):
        """Changing the top attribute moves the rect and does not change
           the rect's width
        """
        r = Rect(1, 2, 3, 4)
        new_top = 10

        r.top = new_top
        self.assertEqual(Rect(1, new_top, 3, 4), r)
        self.assertEqual(new_top, r.top)

    def test_top__invalid_value(self):
        """Ensures the top attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.top = value

    def test_top__del(self):
        """Ensures the top attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.top

    def test_bottom(self):
        """Changing the bottom attribute moves the rect and does not change
           the rect's height
        """
        r = Rect(1, 2, 3, 4)
        new_bottom = r.bottom + 20
        expected_top = r.top + 20
        old_height = r.height

        r.bottom = new_bottom
        self.assertEqual(new_bottom, r.bottom)
        self.assertEqual(expected_top, r.top)
        self.assertEqual(old_height, r.height)

    def test_bottom__invalid_value(self):
        """Ensures the bottom attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.bottom = value

    def test_bottom__del(self):
        """Ensures the bottom attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.bottom

    def test_centerx(self):
        """Changing the centerx attribute moves the rect and does not change
           the rect's width
        """
        r = Rect(1, 2, 3, 4)
        new_centerx = r.centerx + 20
        expected_left = r.left + 20
        old_width = r.width

        r.centerx = new_centerx
        self.assertEqual(new_centerx, r.centerx)
        self.assertEqual(expected_left, r.left)
        self.assertEqual(old_width, r.width)

    def test_centerx__invalid_value(self):
        """Ensures the centerx attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.centerx = value

    def test_centerx__del(self):
        """Ensures the centerx attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.centerx

    def test_centery(self):
        """Changing the centery attribute moves the rect and does not change
           the rect's width
        """
        r = Rect(1, 2, 3, 4)
        new_centery = r.centery + 20
        expected_top = r.top + 20
        old_height = r.height

        r.centery = new_centery
        self.assertEqual(new_centery, r.centery)
        self.assertEqual(expected_top, r.top)
        self.assertEqual(old_height, r.height)

    def test_centery__invalid_value(self):
        """Ensures the centery attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.centery = value

    def test_centery__del(self):
        """Ensures the centery attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.centery

    def test_topleft(self):
        """Changing the topleft attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.topleft = new_topleft
        self.assertEqual(new_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_topleft__invalid_value(self):
        """Ensures the topleft attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.topleft = value

    def test_topleft__del(self):
        """Ensures the topleft attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.topleft

    def test_bottomleft(self):
        """Changing the bottomleft attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_bottomleft = (r.left + 20, r.bottom + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.bottomleft = new_bottomleft
        self.assertEqual(new_bottomleft, r.bottomleft)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_bottomleft__invalid_value(self):
        """Ensures the bottomleft attribute handles invalid values correctly.
        """
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.bottomleft = value

    def test_bottomleft__del(self):
        """Ensures the bottomleft attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.bottomleft

    def test_topright(self):
        """Changing the topright attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_topright = (r.right + 20, r.top + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.topright = new_topright
        self.assertEqual(new_topright, r.topright)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_topright__invalid_value(self):
        """Ensures the topright attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.topright = value

    def test_topright__del(self):
        """Ensures the topright attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.topright

    def test_bottomright(self):
        """Changing the bottomright attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_bottomright = (r.right + 20, r.bottom + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.bottomright = new_bottomright
        self.assertEqual(new_bottomright, r.bottomright)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_bottomright__invalid_value(self):
        """Ensures the bottomright attribute handles invalid values correctly.
        """
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.bottomright = value

    def test_bottomright__del(self):
        """Ensures the bottomright attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.bottomright

    def test_center(self):
        """Changing the center attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_center = (r.centerx + 20, r.centery + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.center = new_center
        self.assertEqual(new_center, r.center)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_center__invalid_value(self):
        """Ensures the center attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.center = value

    def test_center__del(self):
        """Ensures the center attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.center

    def test_midleft(self):
        """Changing the midleft attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_midleft = (r.left + 20, r.centery + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.midleft = new_midleft
        self.assertEqual(new_midleft, r.midleft)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_midleft__invalid_value(self):
        """Ensures the midleft attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.midleft = value

    def test_midleft__del(self):
        """Ensures the midleft attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.midleft

    def test_midright(self):
        """Changing the midright attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_midright = (r.right + 20, r.centery + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.midright = new_midright
        self.assertEqual(new_midright, r.midright)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_midright__invalid_value(self):
        """Ensures the midright attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.midright = value

    def test_midright__del(self):
        """Ensures the midright attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.midright

    def test_midtop(self):
        """Changing the midtop attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_midtop = (r.centerx + 20, r.top + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.midtop = new_midtop
        self.assertEqual(new_midtop, r.midtop)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_midtop__invalid_value(self):
        """Ensures the midtop attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.midtop = value

    def test_midtop__del(self):
        """Ensures the midtop attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.midtop

    def test_midbottom(self):
        """Changing the midbottom attribute moves the rect and does not change
           the rect's size
        """
        r = Rect(1, 2, 3, 4)
        new_midbottom = (r.centerx + 20, r.bottom + 30)
        expected_topleft = (r.left + 20, r.top + 30)
        old_size = r.size

        r.midbottom = new_midbottom
        self.assertEqual(new_midbottom, r.midbottom)
        self.assertEqual(expected_topleft, r.topleft)
        self.assertEqual(old_size, r.size)

    def test_midbottom__invalid_value(self):
        """Ensures the midbottom attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.midbottom = value

    def test_midbottom__del(self):
        """Ensures the midbottom attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.midbottom

    def test_width(self):
        """Changing the width resizes the rect from the top-left corner
        """
        r = Rect(1, 2, 3, 4)
        new_width = 10
        old_topleft = r.topleft
        old_height = r.height

        r.width = new_width
        self.assertEqual(new_width, r.width)
        self.assertEqual(old_height, r.height)
        self.assertEqual(old_topleft, r.topleft)

    def test_width__invalid_value(self):
        """Ensures the width attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.width = value

    def test_width__del(self):
        """Ensures the width attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.width

    def test_height(self):
        """Changing the height resizes the rect from the top-left corner
        """
        r = Rect(1, 2, 3, 4)
        new_height = 10
        old_topleft = r.topleft
        old_width = r.width

        r.height = new_height
        self.assertEqual(new_height, r.height)
        self.assertEqual(old_width, r.width)
        self.assertEqual(old_topleft, r.topleft)

    def test_height__invalid_value(self):
        """Ensures the height attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.height = value

    def test_height__del(self):
        """Ensures the height attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.height

    def test_size(self):
        """Changing the size resizes the rect from the top-left corner
        """
        r = Rect(1, 2, 3, 4)
        new_size = (10, 20)
        old_topleft = r.topleft

        r.size = new_size
        self.assertEqual(new_size, r.size)
        self.assertEqual(old_topleft, r.topleft)

    def test_size__invalid_value(self):
        """Ensures the size attribute handles invalid values correctly."""
        r = Rect(0, 0, 1, 1)

        for value in (None, [], "1", 1, (1,), [1, 2, 3]):
            with self.assertRaises(TypeError):
                r.size = value

    def test_size__del(self):
        """Ensures the size attribute can't be deleted."""
        r = Rect(0, 0, 1, 1)

        with self.assertRaises(AttributeError):
            del r.size

    def test_contains(self):
        r = Rect(1, 2, 3, 4)

        self.assertTrue(
            r.contains(Rect(2, 3, 1, 1)), "r does not contain Rect(2, 3, 1, 1)"
        )
        self.assertTrue(
            r.contains(Rect(r)), "r does not contain the same rect as itself"
        )
        self.assertTrue(
            r.contains(Rect(2, 3, 0, 0)),
            "r does not contain an empty rect within its bounds",
        )
        self.assertFalse(r.contains(Rect(0, 0, 1, 2)), "r contains Rect(0, 0, 1, 2)")
        self.assertFalse(r.contains(Rect(4, 6, 1, 1)), "r contains Rect(4, 6, 1, 1)")
        self.assertFalse(r.contains(Rect(4, 6, 0, 0)), "r contains Rect(4, 6, 0, 0)")

    def test_collidepoint(self):
        r = Rect(1, 2, 3, 4)

        self.assertTrue(
            r.collidepoint(r.left, r.top), "r does not collide with point (left, top)"
        )
        self.assertFalse(
            r.collidepoint(r.left - 1, r.top), "r collides with point (left - 1, top)"
        )
        self.assertFalse(
            r.collidepoint(r.left, r.top - 1), "r collides with point (left, top - 1)"
        )
        self.assertFalse(
            r.collidepoint(r.left - 1, r.top - 1),
            "r collides with point (left - 1, top - 1)",
        )

        self.assertTrue(
            r.collidepoint(r.right - 1, r.bottom - 1),
            "r does not collide with point (right - 1, bottom - 1)",
        )
        self.assertFalse(
            r.collidepoint(r.right, r.bottom), "r collides with point (right, bottom)"
        )
        self.assertFalse(
            r.collidepoint(r.right - 1, r.bottom),
            "r collides with point (right - 1, bottom)",
        )
        self.assertFalse(
            r.collidepoint(r.right, r.bottom - 1),
            "r collides with point (right, bottom - 1)",
        )

    def test_inflate__larger(self):
        """The inflate method inflates around the center of the rectangle
        """
        r = Rect(2, 4, 6, 8)
        r2 = r.inflate(4, 6)

        self.assertEqual(r.center, r2.center)
        self.assertEqual(r.left - 2, r2.left)
        self.assertEqual(r.top - 3, r2.top)
        self.assertEqual(r.right + 2, r2.right)
        self.assertEqual(r.bottom + 3, r2.bottom)
        self.assertEqual(r.width + 4, r2.width)
        self.assertEqual(r.height + 6, r2.height)

    def test_inflate__smaller(self):
        """The inflate method inflates around the center of the rectangle
        """
        r = Rect(2, 4, 6, 8)
        r2 = r.inflate(-4, -6)

        self.assertEqual(r.center, r2.center)
        self.assertEqual(r.left + 2, r2.left)
        self.assertEqual(r.top + 3, r2.top)
        self.assertEqual(r.right - 2, r2.right)
        self.assertEqual(r.bottom - 3, r2.bottom)
        self.assertEqual(r.width - 4, r2.width)
        self.assertEqual(r.height - 6, r2.height)

    def test_inflate_ip__larger(self):
        """The inflate_ip method inflates around the center of the rectangle
        """
        r = Rect(2, 4, 6, 8)
        r2 = Rect(r)
        r2.inflate_ip(-4, -6)

        self.assertEqual(r.center, r2.center)
        self.assertEqual(r.left + 2, r2.left)
        self.assertEqual(r.top + 3, r2.top)
        self.assertEqual(r.right - 2, r2.right)
        self.assertEqual(r.bottom - 3, r2.bottom)
        self.assertEqual(r.width - 4, r2.width)
        self.assertEqual(r.height - 6, r2.height)

    def test_inflate_ip__smaller(self):
        """The inflate method inflates around the center of the rectangle
        """
        r = Rect(2, 4, 6, 8)
        r2 = Rect(r)
        r2.inflate_ip(-4, -6)

        self.assertEqual(r.center, r2.center)
        self.assertEqual(r.left + 2, r2.left)
        self.assertEqual(r.top + 3, r2.top)
        self.assertEqual(r.right - 2, r2.right)
        self.assertEqual(r.bottom - 3, r2.bottom)
        self.assertEqual(r.width - 4, r2.width)
        self.assertEqual(r.height - 6, r2.height)

    def test_clamp(self):
        r = Rect(10, 10, 10, 10)
        c = Rect(19, 12, 5, 5).clamp(r)
        self.assertEqual(c.right, r.right)
        self.assertEqual(c.top, 12)
        c = Rect(1, 2, 3, 4).clamp(r)
        self.assertEqual(c.topleft, r.topleft)
        c = Rect(5, 500, 22, 33).clamp(r)
        self.assertEqual(c.center, r.center)

    def test_clamp_ip(self):
        r = Rect(10, 10, 10, 10)
        c = Rect(19, 12, 5, 5)
        c.clamp_ip(r)
        self.assertEqual(c.right, r.right)
        self.assertEqual(c.top, 12)
        c = Rect(1, 2, 3, 4)
        c.clamp_ip(r)
        self.assertEqual(c.topleft, r.topleft)
        c = Rect(5, 500, 22, 33)
        c.clamp_ip(r)
        self.assertEqual(c.center, r.center)

    def test_clip(self):
        r1 = Rect(1, 2, 3, 4)
        self.assertEqual(Rect(1, 2, 2, 2), r1.clip(Rect(0, 0, 3, 4)))
        self.assertEqual(Rect(2, 2, 2, 4), r1.clip(Rect(2, 2, 10, 20)))
        self.assertEqual(Rect(2, 3, 1, 2), r1.clip(Rect(2, 3, 1, 2)))
        self.assertEqual((0, 0), r1.clip(20, 30, 5, 6).size)
        self.assertEqual(
            r1, r1.clip(Rect(r1)), "r1 does not clip an identical rect to itself"
        )

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline(self):
        """Ensures clipline handles four int parameters.

        Tests the clipline(x1, y1, x2, y2) format.
        """
        rect = Rect((1, 2), (35, 40))
        x1 = 5
        y1 = 6
        x2 = 11
        y2 = 19
        expected_line = ((x1, y1), (x2, y2))

        clipped_line = rect.clipline(x1, y1, x2, y2)

        self.assertIsInstance(clipped_line, tuple)
        self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__two_sequences(self):
        """Ensures clipline handles a sequence of two sequences.

        Tests the clipline((x1, y1), (x2, y2)) format.
        Tests the sequences as different types.
        """
        rect = Rect((1, 2), (35, 40))
        pt1 = (5, 6)
        pt2 = (11, 19)

        INNER_SEQUENCES = (list, tuple, Vector2)
        expected_line = (pt1, pt2)

        for inner_seq1 in INNER_SEQUENCES:
            endpt1 = inner_seq1(pt1)

            for inner_seq2 in INNER_SEQUENCES:
                clipped_line = rect.clipline((endpt1, inner_seq2(pt2)))

                self.assertIsInstance(clipped_line, tuple)
                self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__sequence_of_four_ints(self):
        """Ensures clipline handles a sequence of four ints.

        Tests the clipline((x1, y1, x2, y2)) format.
        Tests the sequence as different types.
        """
        rect = Rect((1, 2), (35, 40))
        line = (5, 6, 11, 19)
        expected_line = ((line[0], line[1]), (line[2], line[3]))

        for outer_seq in (list, tuple):
            clipped_line = rect.clipline(outer_seq(line))

            self.assertIsInstance(clipped_line, tuple)
            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__sequence_of_two_sequences(self):
        """Ensures clipline handles a sequence of two sequences.

        Tests the clipline(((x1, y1), (x2, y2))) format.
        Tests the sequences as different types.
        """
        rect = Rect((1, 2), (35, 40))
        pt1 = (5, 6)
        pt2 = (11, 19)

        INNER_SEQUENCES = (list, tuple, Vector2)
        expected_line = (pt1, pt2)

        for inner_seq1 in INNER_SEQUENCES:
            endpt1 = inner_seq1(pt1)

            for inner_seq2 in INNER_SEQUENCES:
                endpt2 = inner_seq2(pt2)

                for outer_seq in (list, tuple):
                    clipped_line = rect.clipline(outer_seq((endpt1, endpt2)))

                    self.assertIsInstance(clipped_line, tuple)
                    self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__floats(self):
        """Ensures clipline handles float parameters."""
        rect = Rect((1, 2), (35, 40))
        x1 = 5.9
        y1 = 6.9
        x2 = 11.9
        y2 = 19.9

        # Floats are truncated.
        expected_line = (
            (math.floor(x1), math.floor(y1)),
            (math.floor(x2), math.floor(y2)),
        )

        clipped_line = rect.clipline(x1, y1, x2, y2)

        self.assertIsInstance(clipped_line, tuple)
        self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__no_overlap(self):
        """Ensures lines that do not overlap the rect are not clipped."""
        rect = Rect((10, 25), (15, 20))
        # Use a bigger rect to help create test lines.
        big_rect = rect.inflate(2, 2)
        lines = (
            (big_rect.bottomleft, big_rect.topleft),  # Left edge.
            (big_rect.topleft, big_rect.topright),  # Top edge.
            (big_rect.topright, big_rect.bottomright),  # Right edge.
            (big_rect.bottomright, big_rect.bottomleft),
        )  # Bottom edge.
        expected_line = ()

        # Test lines outside rect.
        for line in lines:
            clipped_line = rect.clipline(line)

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__both_endpoints_outside(self):
        """Ensures lines that overlap the rect are clipped.

        Testing lines with both endpoints outside the rect.
        """
        rect = Rect((0, 0), (20, 20))
        # Use a bigger rect to help create test lines.
        big_rect = rect.inflate(2, 2)

        # Create a dict of lines and expected results.
        line_dict = {
            (big_rect.midleft, big_rect.midright): (
                rect.midleft,
                (rect.midright[0] - 1, rect.midright[1]),
            ),
            (big_rect.midtop, big_rect.midbottom): (
                rect.midtop,
                (rect.midbottom[0], rect.midbottom[1] - 1),
            ),
            # Diagonals.
            (big_rect.topleft, big_rect.bottomright): (
                rect.topleft,
                (rect.bottomright[0] - 1, rect.bottomright[1] - 1),
            ),
            # This line needs a small adjustment to make sure it intersects
            # the rect correctly.
            (
                (big_rect.topright[0] - 1, big_rect.topright[1]),
                (big_rect.bottomleft[0], big_rect.bottomleft[1] - 1),
            ): (
                (rect.topright[0] - 1, rect.topright[1]),
                (rect.bottomleft[0], rect.bottomleft[1] - 1),
            ),
        }

        for line, expected_line in line_dict.items():
            clipped_line = rect.clipline(line)

            self.assertTupleEqual(clipped_line, expected_line)

            # Swap endpoints to test for symmetry.
            expected_line = (expected_line[1], expected_line[0])

            clipped_line = rect.clipline((line[1], line[0]))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__both_endpoints_inside(self):
        """Ensures lines that overlap the rect are clipped.

        Testing lines with both endpoints inside the rect.
        """
        rect = Rect((-10, -5), (20, 20))
        # Use a smaller rect to help create test lines.
        small_rect = rect.inflate(-2, -2)

        lines = (
            (small_rect.midleft, small_rect.midright),
            (small_rect.midtop, small_rect.midbottom),
            # Diagonals.
            (small_rect.topleft, small_rect.bottomright),
            (small_rect.topright, small_rect.bottomleft),
        )

        for line in lines:
            expected_line = line

            clipped_line = rect.clipline(line)

            self.assertTupleEqual(clipped_line, expected_line)

            # Swap endpoints to test for symmetry.
            expected_line = (expected_line[1], expected_line[0])

            clipped_line = rect.clipline((line[1], line[0]))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__endpoints_inside_and_outside(self):
        """Ensures lines that overlap the rect are clipped.

        Testing lines with one endpoint outside the rect and the other is
        inside the rect.
        """
        rect = Rect((0, 0), (21, 21))
        # Use a bigger rect to help create test lines.
        big_rect = rect.inflate(2, 2)

        # Create a dict of lines and expected results.
        line_dict = {
            (big_rect.midleft, rect.center): (rect.midleft, rect.center),
            (big_rect.midtop, rect.center): (rect.midtop, rect.center),
            (big_rect.midright, rect.center): (
                (rect.midright[0] - 1, rect.midright[1]),
                rect.center,
            ),
            (big_rect.midbottom, rect.center): (
                (rect.midbottom[0], rect.midbottom[1] - 1),
                rect.center,
            ),
            # Diagonals.
            (big_rect.topleft, rect.center): (rect.topleft, rect.center),
            (big_rect.topright, rect.center): (
                (rect.topright[0] - 1, rect.topright[1]),
                rect.center,
            ),
            (big_rect.bottomright, rect.center): (
                (rect.bottomright[0] - 1, rect.bottomright[1] - 1),
                rect.center,
            ),
            # This line needs a small adjustment to make sure it intersects
            # the rect correctly.
            ((big_rect.bottomleft[0], big_rect.bottomleft[1] - 1), rect.center): (
                (rect.bottomleft[0], rect.bottomleft[1] - 1),
                rect.center,
            ),
        }

        for line, expected_line in line_dict.items():
            clipped_line = rect.clipline(line)

            self.assertTupleEqual(clipped_line, expected_line)

            # Swap endpoints to test for symmetry.
            expected_line = (expected_line[1], expected_line[0])

            clipped_line = rect.clipline((line[1], line[0]))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__edges(self):
        """Ensures clipline properly clips line that are along the rect edges.
        """
        rect = Rect((10, 25), (15, 20))

        # Create a dict of edges and expected results.
        edge_dict = {
            # Left edge.
            (rect.bottomleft, rect.topleft): (
                (rect.bottomleft[0], rect.bottomleft[1] - 1),
                rect.topleft,
            ),
            # Top edge.
            (rect.topleft, rect.topright): (
                rect.topleft,
                (rect.topright[0] - 1, rect.topright[1]),
            ),
            # Right edge.
            (rect.topright, rect.bottomright): (),
            # Bottom edge.
            (rect.bottomright, rect.bottomleft): (),
        }

        for edge, expected_line in edge_dict.items():
            clipped_line = rect.clipline(edge)

            self.assertTupleEqual(clipped_line, expected_line)

            # Swap endpoints to test for symmetry.
            if expected_line:
                expected_line = (expected_line[1], expected_line[0])

            clipped_line = rect.clipline((edge[1], edge[0]))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__equal_endpoints_with_overlap(self):
        """Ensures clipline handles lines with both endpoints the same.

        Testing lines that overlap the rect.
        """
        rect = Rect((10, 25), (15, 20))

        # Test all the points in and on a rect.
        pts = (
            (x, y)
            for x in range(rect.left, rect.right)
            for y in range(rect.top, rect.bottom)
        )

        for pt in pts:
            expected_line = (pt, pt)

            clipped_line = rect.clipline((pt, pt))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__equal_endpoints_no_overlap(self):
        """Ensures clipline handles lines with both endpoints the same.

        Testing lines that do not overlap the rect.
        """
        expected_line = ()
        rect = Rect((10, 25), (15, 20))

        # Test points outside rect.
        for pt in test_utils.rect_perimeter_pts(rect.inflate(2, 2)):
            clipped_line = rect.clipline((pt, pt))

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__zero_size_rect(self):
        """Ensures clipline handles zero sized rects correctly."""
        expected_line = ()

        for size in ((0, 15), (15, 0), (0, 0)):
            rect = Rect((10, 25), size)

            clipped_line = rect.clipline(rect.topleft, rect.topleft)

            self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__negative_size_rect(self):
        """Ensures clipline handles negative sized rects correctly."""
        expected_line = ()

        for size in ((-15, 20), (15, -20), (-15, -20)):
            rect = Rect((10, 25), size)
            norm_rect = rect.copy()
            norm_rect.normalize()
            # Use a bigger rect to help create test lines.
            big_rect = norm_rect.inflate(2, 2)

            # Create a dict of lines and expected results. Some line have both
            # endpoints outside the rect and some have one inside and one
            # outside.
            line_dict = {
                (big_rect.midleft, big_rect.midright): (
                    norm_rect.midleft,
                    (norm_rect.midright[0] - 1, norm_rect.midright[1]),
                ),
                (big_rect.midtop, big_rect.midbottom): (
                    norm_rect.midtop,
                    (norm_rect.midbottom[0], norm_rect.midbottom[1] - 1),
                ),
                (big_rect.midleft, norm_rect.center): (
                    norm_rect.midleft,
                    norm_rect.center,
                ),
                (big_rect.midtop, norm_rect.center): (
                    norm_rect.midtop,
                    norm_rect.center,
                ),
                (big_rect.midright, norm_rect.center): (
                    (norm_rect.midright[0] - 1, norm_rect.midright[1]),
                    norm_rect.center,
                ),
                (big_rect.midbottom, norm_rect.center): (
                    (norm_rect.midbottom[0], norm_rect.midbottom[1] - 1),
                    norm_rect.center,
                ),
            }

            for line, expected_line in line_dict.items():
                clipped_line = rect.clipline(line)

                # Make sure rect wasn't normalized.
                self.assertNotEqual(rect, norm_rect)
                self.assertTupleEqual(clipped_line, expected_line)

                # Swap endpoints to test for symmetry.
                expected_line = (expected_line[1], expected_line[0])

                clipped_line = rect.clipline((line[1], line[0]))

                self.assertTupleEqual(clipped_line, expected_line)

    @unittest.skipIf(SDL1, "rect.clipline not available in SDL1")
    def test_clipline__invalid_line(self):
        """Ensures clipline handles invalid lines correctly."""
        rect = Rect((0, 0), (10, 20))
        invalid_lines = (
            (),
            (1,),
            (1, 2),
            (1, 2, 3),
            (1, 2, 3, 4, 5),
            ((1, 2),),
            ((1, 2), (3,)),
            ((1, 2), 3),
            ((1, 2, 5), (3, 4)),
            ((1, 2), (3, 4, 5)),
            ((1, 2), (3, 4), (5, 6)),
        )

        for line in invalid_lines:
            with self.assertRaises(TypeError):
                clipped_line = rect.clipline(line)

            with self.assertRaises(TypeError):
                clipped_line = rect.clipline(*line)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_move(self):
        r = Rect(1, 2, 3, 4)
        move_x = 10
        move_y = 20
        r2 = r.move(move_x, move_y)
        expected_r2 = Rect(r.left + move_x, r.top + move_y, r.width, r.height)
        self.assertEqual(expected_r2, r2)

    @unittest.skipIf(IS_PYPY, "fails on pypy sometimes")
    def test_move_ip(self):
        r = Rect(1, 2, 3, 4)
        r2 = Rect(r)
        move_x = 10
        move_y = 20
        r2.move_ip(move_x, move_y)
        expected_r2 = Rect(r.left + move_x, r.top + move_y, r.width, r.height)
        self.assertEqual(expected_r2, r2)

    def test_update_XYWidthHeight(self):
        """Test update with 4 int values(x, y, w, h)"""
        rect = Rect(0, 0, 1, 1)
        rect.update(1, 2, 3, 4)

        self.assertEqual(1, rect.left)
        self.assertEqual(2, rect.top)
        self.assertEqual(3, rect.width)
        self.assertEqual(4, rect.height)

    def test_update__TopLeftSize(self):
        """Test update with 2 tuples((x, y), (w, h))"""
        rect = Rect(0, 0, 1, 1)
        rect.update((1, 2), (3, 4))

        self.assertEqual(1, rect.left)
        self.assertEqual(2, rect.top)
        self.assertEqual(3, rect.width)
        self.assertEqual(4, rect.height)

    def test_update__List(self):
        """Test update with list"""
        rect = Rect(0, 0, 1, 1)
        rect2 = [1, 2, 3, 4]
        rect.update(rect2)

        self.assertEqual(1, rect.left)
        self.assertEqual(2, rect.top)
        self.assertEqual(3, rect.width)
        self.assertEqual(4, rect.height)

    def test_update__RectObject(self):
        """Test update with other rect object"""
        rect = Rect(0, 0, 1, 1)
        rect2 = Rect(1, 2, 3, 4)
        rect.update(rect2)

        self.assertEqual(1, rect.left)
        self.assertEqual(2, rect.top)
        self.assertEqual(3, rect.width)
        self.assertEqual(4, rect.height)

    def test_union(self):
        r1 = Rect(1, 1, 1, 2)
        r2 = Rect(-2, -2, 1, 2)
        self.assertEqual(Rect(-2, -2, 4, 5), r1.union(r2))

    def test_union__with_identical_Rect(self):
        r1 = Rect(1, 2, 3, 4)
        self.assertEqual(r1, r1.union(Rect(r1)))

    def test_union_ip(self):
        r1 = Rect(1, 1, 1, 2)
        r2 = Rect(-2, -2, 1, 2)
        r1.union_ip(r2)
        self.assertEqual(Rect(-2, -2, 4, 5), r1)

    def test_unionall(self):
        r1 = Rect(0, 0, 1, 1)
        r2 = Rect(-2, -2, 1, 1)
        r3 = Rect(2, 2, 1, 1)

        r4 = r1.unionall([r2, r3])
        self.assertEqual(Rect(-2, -2, 5, 5), r4)

    def test_unionall__invalid_rect_format(self):
        """Ensures unionall correctly handles invalid rect parameters."""
        numbers = [0, 1.2, 2, 3.3]
        strs = ["a", "b", "c"]
        nones = [None, None]

        for invalid_rects in (numbers, strs, nones):
            with self.assertRaises(TypeError):
                Rect(0, 0, 1, 1).unionall(invalid_rects)

    def test_unionall_ip(self):
        r1 = Rect(0, 0, 1, 1)
        r2 = Rect(-2, -2, 1, 1)
        r3 = Rect(2, 2, 1, 1)

        r1.unionall_ip([r2, r3])
        self.assertEqual(Rect(-2, -2, 5, 5), r1)

        # Bug for an empty list. Would return a Rect instead of None.
        self.assertTrue(r1.unionall_ip([]) is None)

    def test_unionall__invalid_rect_format(self):
        """Ensures unionall_ip correctly handles invalid rect parameters."""
        numbers = [0, 1.2, 2, 3.3]
        strs = ["a", "b", "c"]
        nones = [None, None]

        for invalid_rects in (numbers, strs, nones):
            with self.assertRaises(TypeError):
                Rect(0, 0, 1, 1).unionall_ip(invalid_rects)

    def test_colliderect(self):
        r1 = Rect(1, 2, 3, 4)
        self.assertTrue(
            r1.colliderect(Rect(0, 0, 2, 3)),
            "r1 does not collide with Rect(0, 0, 2, 3)",
        )
        self.assertFalse(
            r1.colliderect(Rect(0, 0, 1, 2)), "r1 collides with Rect(0, 0, 1, 2)"
        )
        self.assertFalse(
            r1.colliderect(Rect(r1.right, r1.bottom, 2, 2)),
            "r1 collides with Rect(r1.right, r1.bottom, 2, 2)",
        )
        self.assertTrue(
            r1.colliderect(Rect(r1.left + 1, r1.top + 1, r1.width - 2, r1.height - 2)),
            "r1 does not collide with Rect(r1.left + 1, r1.top + 1, "
            + "r1.width - 2, r1.height - 2)",
        )
        self.assertTrue(
            r1.colliderect(Rect(r1.left - 1, r1.top - 1, r1.width + 2, r1.height + 2)),
            "r1 does not collide with Rect(r1.left - 1, r1.top - 1, "
            + "r1.width + 2, r1.height + 2)",
        )
        self.assertTrue(
            r1.colliderect(Rect(r1)), "r1 does not collide with an identical rect"
        )
        self.assertFalse(
            r1.colliderect(Rect(r1.right, r1.bottom, 0, 0)),
            "r1 collides with Rect(r1.right, r1.bottom, 0, 0)",
        )
        self.assertFalse(
            r1.colliderect(Rect(r1.right, r1.bottom, 1, 1)),
            "r1 collides with Rect(r1.right, r1.bottom, 1, 1)",
        )

    @unittest.skipIf(IS_PYPY, "fails on pypy3 sometimes")
    def testEquals(self):
        """ check to see how the rect uses __eq__
        """
        r1 = Rect(1, 2, 3, 4)
        r2 = Rect(10, 20, 30, 40)
        r3 = (10, 20, 30, 40)
        r4 = Rect(10, 20, 30, 40)

        class foo(Rect):
            def __eq__(self, other):
                return id(self) == id(other)

            def __ne__(self, other):
                return id(self) != id(other)

        class foo2(Rect):
            pass

        r5 = foo(10, 20, 30, 40)
        r6 = foo2(10, 20, 30, 40)

        self.assertNotEqual(r5, r2)

        # because we define equality differently for this subclass.
        self.assertEqual(r6, r2)

        rect_list = [r1, r2, r3, r4, r6]

        # see if we can remove 4 of these.
        rect_list.remove(r2)
        rect_list.remove(r2)
        rect_list.remove(r2)
        rect_list.remove(r2)
        self.assertRaises(ValueError, rect_list.remove, r2)

    def test_collidedict(self):
        """Ensures collidedict detects collisions."""
        rect = Rect(1, 1, 10, 10)

        collide_item1 = ("collide 1", rect.copy())
        collide_item2 = ("collide 2", Rect(5, 5, 10, 10))
        no_collide_item1 = ("no collide 1", Rect(60, 60, 10, 10))
        no_collide_item2 = ("no collide 2", Rect(70, 70, 10, 10))

        # Dict to check collisions with values.
        rect_values = dict(
            (collide_item1, collide_item2, no_collide_item1, no_collide_item2)
        )
        value_collide_items = (collide_item1, collide_item2)

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}
        key_collide_items = tuple((tuple(v), k) for k, v in value_collide_items)

        for use_values in (True, False):
            if use_values:
                expected_items = value_collide_items
                d = rect_values
            else:
                expected_items = key_collide_items
                d = rect_keys

            collide_item = rect.collidedict(d, use_values)

            # The detected collision could be any of the possible items.
            self.assertIn(collide_item, expected_items)

    def test_collidedict__no_collision(self):
        """Ensures collidedict returns None when no collisions."""
        rect = Rect(1, 1, 10, 10)

        no_collide_item1 = ("no collide 1", Rect(50, 50, 10, 10))
        no_collide_item2 = ("no collide 2", Rect(60, 60, 10, 10))
        no_collide_item3 = ("no collide 3", Rect(70, 70, 10, 10))

        # Dict to check collisions with values.
        rect_values = dict((no_collide_item1, no_collide_item2, no_collide_item3))

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            collide_item = rect.collidedict(d, use_values)

            self.assertIsNone(collide_item)

    def test_collidedict__barely_touching(self):
        """Ensures collidedict works correctly for rects that barely touch."""
        rect = Rect(1, 1, 10, 10)
        # Small rect to test barely touching collisions.
        collide_rect = Rect(0, 0, 1, 1)

        collide_item1 = ("collide 1", collide_rect)
        no_collide_item1 = ("no collide 1", Rect(50, 50, 10, 10))
        no_collide_item2 = ("no collide 2", Rect(60, 60, 10, 10))
        no_collide_item3 = ("no collide 3", Rect(70, 70, 10, 10))

        # Dict to check collisions with values.
        no_collide_rect_values = dict(
            (no_collide_item1, no_collide_item2, no_collide_item3)
        )

        # Dict to check collisions with keys.
        no_collide_rect_keys = {tuple(v): k for k, v in no_collide_rect_values.items()}

        # Tests the collide_rect on each of the rect's corners.
        for attr in ("topleft", "topright", "bottomright", "bottomleft"):
            setattr(collide_rect, attr, getattr(rect, attr))

            for use_values in (True, False):
                if use_values:
                    expected_item = collide_item1
                    d = dict(no_collide_rect_values)
                else:
                    expected_item = (tuple(collide_item1[1]), collide_item1[0])
                    d = dict(no_collide_rect_keys)

                d.update((expected_item,))  # Add in the expected item.

                collide_item = rect.collidedict(d, use_values)

                self.assertTupleEqual(collide_item, expected_item)

    def test_collidedict__zero_sized_rects(self):
        """Ensures collidedict works correctly with zero sized rects.

        There should be no collisions with zero sized rects.
        """
        zero_rect1 = Rect(1, 1, 0, 0)
        zero_rect2 = Rect(1, 1, 1, 0)
        zero_rect3 = Rect(1, 1, 0, 1)
        zero_rect4 = Rect(1, 1, -1, 0)
        zero_rect5 = Rect(1, 1, 0, -1)

        no_collide_item1 = ("no collide 1", zero_rect1.copy())
        no_collide_item2 = ("no collide 2", zero_rect2.copy())
        no_collide_item3 = ("no collide 3", zero_rect3.copy())
        no_collide_item4 = ("no collide 4", zero_rect4.copy())
        no_collide_item5 = ("no collide 5", zero_rect5.copy())
        no_collide_item6 = ("no collide 6", Rect(0, 0, 10, 10))
        no_collide_item7 = ("no collide 7", Rect(0, 0, 2, 2))

        # Dict to check collisions with values.
        rect_values = dict(
            (
                no_collide_item1,
                no_collide_item2,
                no_collide_item3,
                no_collide_item4,
                no_collide_item5,
                no_collide_item6,
                no_collide_item7,
            )
        )

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            for zero_rect in (
                zero_rect1,
                zero_rect2,
                zero_rect3,
                zero_rect4,
                zero_rect5,
            ):
                collide_item = zero_rect.collidedict(d, use_values)

                self.assertIsNone(collide_item)

    def test_collidedict__zero_sized_rects_as_args(self):
        """Ensures collidedict works correctly with zero sized rects as args.

        There should be no collisions with zero sized rects.
        """
        rect = Rect(0, 0, 10, 10)

        no_collide_item1 = ("no collide 1", Rect(1, 1, 0, 0))
        no_collide_item2 = ("no collide 2", Rect(1, 1, 1, 0))
        no_collide_item3 = ("no collide 3", Rect(1, 1, 0, 1))

        # Dict to check collisions with values.
        rect_values = dict((no_collide_item1, no_collide_item2, no_collide_item3))

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            collide_item = rect.collidedict(d, use_values)

            self.assertIsNone(collide_item)

    def test_collidedict__negative_sized_rects(self):
        """Ensures collidedict works correctly with negative sized rects."""
        neg_rect = Rect(1, 1, -1, -1)

        collide_item1 = ("collide 1", neg_rect.copy())
        collide_item2 = ("collide 2", Rect(0, 0, 10, 10))
        no_collide_item1 = ("no collide 1", Rect(1, 1, 10, 10))

        # Dict to check collisions with values.
        rect_values = dict((collide_item1, collide_item2, no_collide_item1))
        value_collide_items = (collide_item1, collide_item2)

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}
        key_collide_items = tuple((tuple(v), k) for k, v in value_collide_items)

        for use_values in (True, False):
            if use_values:
                collide_items = value_collide_items
                d = rect_values
            else:
                collide_items = key_collide_items
                d = rect_keys

            collide_item = neg_rect.collidedict(d, use_values)

            # The detected collision could be any of the possible items.
            self.assertIn(collide_item, collide_items)

    def test_collidedict__negative_sized_rects_as_args(self):
        """Ensures collidedict works correctly with negative sized rect args.
        """
        rect = Rect(0, 0, 10, 10)

        collide_item1 = ("collide 1", Rect(1, 1, -1, -1))
        no_collide_item1 = ("no collide 1", Rect(1, 1, -1, 0))
        no_collide_item2 = ("no collide 2", Rect(1, 1, 0, -1))

        # Dict to check collisions with values.
        rect_values = dict((collide_item1, no_collide_item1, no_collide_item2))

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        for use_values in (True, False):
            if use_values:
                expected_item = collide_item1
                d = rect_values
            else:
                expected_item = (tuple(collide_item1[1]), collide_item1[0])
                d = rect_keys

            collide_item = rect.collidedict(d, use_values)

            self.assertTupleEqual(collide_item, expected_item)

    def test_collidedict__invalid_dict_format(self):
        """Ensures collidedict correctly handles invalid dict parameters."""
        rect = Rect(0, 0, 10, 10)

        invalid_value_dict = ("collide", rect.copy())
        invalid_key_dict = tuple(invalid_value_dict[1]), invalid_value_dict[0]

        for use_values in (True, False):
            d = invalid_value_dict if use_values else invalid_key_dict

            with self.assertRaises(TypeError):
                collide_item = rect.collidedict(d, use_values)

    def test_collidedict__invalid_dict_value_format(self):
        """Ensures collidedict correctly handles dicts with invalid values."""
        rect = Rect(0, 0, 10, 10)
        rect_keys = {tuple(rect): "collide"}

        with self.assertRaises(TypeError):
            collide_item = rect.collidedict(rect_keys, 1)

    def test_collidedict__invalid_dict_key_format(self):
        """Ensures collidedict correctly handles dicts with invalid keys."""
        rect = Rect(0, 0, 10, 10)
        rect_values = {"collide": rect.copy()}

        with self.assertRaises(TypeError):
            collide_item = rect.collidedict(rect_values)

    def test_collidedict__invalid_use_values_format(self):
        """Ensures collidedict correctly handles invalid use_values parameters.
        """
        rect = Rect(0, 0, 1, 1)
        d = {}

        for invalid_param in (None, d, 1.1):
            with self.assertRaises(TypeError):
                collide_item = rect.collidedict(d, invalid_param)

    def test_collidedictall(self):
        """Ensures collidedictall detects collisions."""
        rect = Rect(1, 1, 10, 10)

        collide_item1 = ("collide 1", rect.copy())
        collide_item2 = ("collide 2", Rect(5, 5, 10, 10))
        no_collide_item1 = ("no collide 1", Rect(60, 60, 20, 20))
        no_collide_item2 = ("no collide 2", Rect(70, 70, 20, 20))

        # Dict to check collisions with values.
        rect_values = dict(
            (collide_item1, collide_item2, no_collide_item1, no_collide_item2)
        )
        value_collide_items = [collide_item1, collide_item2]

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}
        key_collide_items = [(tuple(v), k) for k, v in value_collide_items]

        for use_values in (True, False):
            if use_values:
                expected_items = value_collide_items
                d = rect_values
            else:
                expected_items = key_collide_items
                d = rect_keys

            collide_items = rect.collidedictall(d, use_values)

            self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__no_collision(self):
        """Ensures collidedictall returns an empty list when no collisions."""
        rect = Rect(1, 1, 10, 10)

        no_collide_item1 = ("no collide 1", Rect(50, 50, 20, 20))
        no_collide_item2 = ("no collide 2", Rect(60, 60, 20, 20))
        no_collide_item3 = ("no collide 3", Rect(70, 70, 20, 20))

        # Dict to check collisions with values.
        rect_values = dict((no_collide_item1, no_collide_item2, no_collide_item3))

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        expected_items = []

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            collide_items = rect.collidedictall(d, use_values)

            self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__barely_touching(self):
        """Ensures collidedictall works correctly for rects that barely touch.
        """
        rect = Rect(1, 1, 10, 10)
        # Small rect to test barely touching collisions.
        collide_rect = Rect(0, 0, 1, 1)

        collide_item1 = ("collide 1", collide_rect)
        no_collide_item1 = ("no collide 1", Rect(50, 50, 20, 20))
        no_collide_item2 = ("no collide 2", Rect(60, 60, 20, 20))
        no_collide_item3 = ("no collide 3", Rect(70, 70, 20, 20))

        # Dict to check collisions with values.
        no_collide_rect_values = dict(
            (no_collide_item1, no_collide_item2, no_collide_item3)
        )

        # Dict to check collisions with keys.
        no_collide_rect_keys = {tuple(v): k for k, v in no_collide_rect_values.items()}

        # Tests the collide_rect on each of the rect's corners.
        for attr in ("topleft", "topright", "bottomright", "bottomleft"):
            setattr(collide_rect, attr, getattr(rect, attr))

            for use_values in (True, False):
                if use_values:
                    expected_items = [collide_item1]
                    d = dict(no_collide_rect_values)
                else:
                    expected_items = [(tuple(collide_item1[1]), collide_item1[0])]
                    d = dict(no_collide_rect_keys)

                d.update(expected_items)  # Add in the expected items.

                collide_items = rect.collidedictall(d, use_values)

                self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__zero_sized_rects(self):
        """Ensures collidedictall works correctly with zero sized rects.

        There should be no collisions with zero sized rects.
        """
        zero_rect1 = Rect(2, 2, 0, 0)
        zero_rect2 = Rect(2, 2, 2, 0)
        zero_rect3 = Rect(2, 2, 0, 2)
        zero_rect4 = Rect(2, 2, -2, 0)
        zero_rect5 = Rect(2, 2, 0, -2)

        no_collide_item1 = ("no collide 1", zero_rect1.copy())
        no_collide_item2 = ("no collide 2", zero_rect2.copy())
        no_collide_item3 = ("no collide 3", zero_rect3.copy())
        no_collide_item4 = ("no collide 4", zero_rect4.copy())
        no_collide_item5 = ("no collide 5", zero_rect5.copy())
        no_collide_item6 = ("no collide 6", Rect(0, 0, 10, 10))
        no_collide_item7 = ("no collide 7", Rect(0, 0, 2, 2))

        # Dict to check collisions with values.
        rect_values = dict(
            (
                no_collide_item1,
                no_collide_item2,
                no_collide_item3,
                no_collide_item4,
                no_collide_item5,
                no_collide_item6,
                no_collide_item7,
            )
        )

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        expected_items = []

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            for zero_rect in (
                zero_rect1,
                zero_rect2,
                zero_rect3,
                zero_rect4,
                zero_rect5,
            ):
                collide_items = zero_rect.collidedictall(d, use_values)

                self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__zero_sized_rects_as_args(self):
        """Ensures collidedictall works correctly with zero sized rects
        as args.

        There should be no collisions with zero sized rects.
        """
        rect = Rect(0, 0, 20, 20)

        no_collide_item1 = ("no collide 1", Rect(2, 2, 0, 0))
        no_collide_item2 = ("no collide 2", Rect(2, 2, 2, 0))
        no_collide_item3 = ("no collide 3", Rect(2, 2, 0, 2))

        # Dict to check collisions with values.
        rect_values = dict((no_collide_item1, no_collide_item2, no_collide_item3))

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}

        expected_items = []

        for use_values in (True, False):
            d = rect_values if use_values else rect_keys

            collide_items = rect.collidedictall(d, use_values)

            self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__negative_sized_rects(self):
        """Ensures collidedictall works correctly with negative sized rects."""
        neg_rect = Rect(2, 2, -2, -2)

        collide_item1 = ("collide 1", neg_rect.copy())
        collide_item2 = ("collide 2", Rect(0, 0, 20, 20))
        no_collide_item1 = ("no collide 1", Rect(2, 2, 20, 20))

        # Dict to check collisions with values.
        rect_values = dict((collide_item1, collide_item2, no_collide_item1))
        value_collide_items = [collide_item1, collide_item2]

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}
        key_collide_items = [(tuple(v), k) for k, v in value_collide_items]

        for use_values in (True, False):
            if use_values:
                expected_items = value_collide_items
                d = rect_values
            else:
                expected_items = key_collide_items
                d = rect_keys

            collide_items = neg_rect.collidedictall(d, use_values)

            self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__negative_sized_rects_as_args(self):
        """Ensures collidedictall works correctly with negative sized rect
        args.
        """
        rect = Rect(0, 0, 10, 10)

        collide_item1 = ("collide 1", Rect(1, 1, -1, -1))
        no_collide_item1 = ("no collide 1", Rect(1, 1, -1, 0))
        no_collide_item2 = ("no collide 2", Rect(1, 1, 0, -1))

        # Dict to check collisions with values.
        rect_values = dict((collide_item1, no_collide_item1, no_collide_item2))
        value_collide_items = [collide_item1]

        # Dict to check collisions with keys.
        rect_keys = {tuple(v): k for k, v in rect_values.items()}
        key_collide_items = [(tuple(v), k) for k, v in value_collide_items]

        for use_values in (True, False):
            if use_values:
                expected_items = value_collide_items
                d = rect_values
            else:
                expected_items = key_collide_items
                d = rect_keys

            collide_items = rect.collidedictall(d, use_values)

            self._assertCountEqual(collide_items, expected_items)

    def test_collidedictall__invalid_dict_format(self):
        """Ensures collidedictall correctly handles invalid dict parameters."""
        rect = Rect(0, 0, 10, 10)

        invalid_value_dict = ("collide", rect.copy())
        invalid_key_dict = tuple(invalid_value_dict[1]), invalid_value_dict[0]

        for use_values in (True, False):
            d = invalid_value_dict if use_values else invalid_key_dict

            with self.assertRaises(TypeError):
                collide_item = rect.collidedictall(d, use_values)

    def test_collidedictall__invalid_dict_value_format(self):
        """Ensures collidedictall correctly handles dicts with invalid values.
        """
        rect = Rect(0, 0, 10, 10)
        rect_keys = {tuple(rect): "collide"}

        with self.assertRaises(TypeError):
            collide_items = rect.collidedictall(rect_keys, 1)

    def test_collidedictall__invalid_dict_key_format(self):
        """Ensures collidedictall correctly handles dicts with invalid keys."""
        rect = Rect(0, 0, 10, 10)
        rect_values = {"collide": rect.copy()}

        with self.assertRaises(TypeError):
            collide_items = rect.collidedictall(rect_values)

    def test_collidedictall__invalid_use_values_format(self):
        """Ensures collidedictall correctly handles invalid use_values
        parameters.
        """
        rect = Rect(0, 0, 1, 1)
        d = {}

        for invalid_param in (None, d, 1.1):
            with self.assertRaises(TypeError):
                collide_items = rect.collidedictall(d, invalid_param)

    def test_collidelist(self):

        # __doc__ (as of 2008-08-02) for pygame.rect.Rect.collidelist:

        # Rect.collidelist(list): return index
        # test if one rectangle in a list intersects
        #
        # Test whether the rectangle collides with any in a sequence of
        # rectangles. The index of the first collision found is returned. If
        # no collisions are found an index of -1 is returned.

        r = Rect(1, 1, 10, 10)
        l = [Rect(50, 50, 1, 1), Rect(5, 5, 10, 10), Rect(15, 15, 1, 1)]

        self.assertEqual(r.collidelist(l), 1)

        f = [Rect(50, 50, 1, 1), (100, 100, 4, 4)]
        self.assertEqual(r.collidelist(f), -1)

    def test_collidelistall(self):

        # __doc__ (as of 2008-08-02) for pygame.rect.Rect.collidelistall:

        # Rect.collidelistall(list): return indices
        # test if all rectangles in a list intersect
        #
        # Returns a list of all the indices that contain rectangles that
        # collide with the Rect. If no intersecting rectangles are found, an
        # empty list is returned.

        r = Rect(1, 1, 10, 10)

        l = [
            Rect(1, 1, 10, 10),
            Rect(5, 5, 10, 10),
            Rect(15, 15, 1, 1),
            Rect(2, 2, 1, 1),
        ]
        self.assertEqual(r.collidelistall(l), [0, 1, 3])

        f = [Rect(50, 50, 1, 1), Rect(20, 20, 5, 5)]
        self.assertFalse(r.collidelistall(f))

    def test_fit(self):

        # __doc__ (as of 2008-08-02) for pygame.rect.Rect.fit:

        # Rect.fit(Rect): return Rect
        # resize and move a rectangle with aspect ratio
        #
        # Returns a new rectangle that is moved and resized to fit another.
        # The aspect ratio of the original Rect is preserved, so the new
        # rectangle may be smaller than the target in either width or height.

        r = Rect(10, 10, 30, 30)

        r2 = Rect(30, 30, 15, 10)

        f = r.fit(r2)
        self.assertTrue(r2.contains(f))

        f2 = r2.fit(r)
        self.assertTrue(r.contains(f2))

    def test_copy(self):
        r = Rect(1, 2, 10, 20)
        c = r.copy()
        self.assertEqual(c, r)

    def test_subscript(self):
        r = Rect(1, 2, 3, 4)
        self.assertEqual(r[0], 1)
        self.assertEqual(r[1], 2)
        self.assertEqual(r[2], 3)
        self.assertEqual(r[3], 4)
        self.assertEqual(r[-1], 4)
        self.assertEqual(r[-2], 3)
        self.assertEqual(r[-4], 1)
        self.assertRaises(IndexError, r.__getitem__, 5)
        self.assertRaises(IndexError, r.__getitem__, -5)
        self.assertEqual(r[0:2], [1, 2])
        self.assertEqual(r[0:4], [1, 2, 3, 4])
        self.assertEqual(r[0:-1], [1, 2, 3])
        self.assertEqual(r[:], [1, 2, 3, 4])
        self.assertEqual(r[...], [1, 2, 3, 4])
        self.assertEqual(r[0:4:2], [1, 3])
        self.assertEqual(r[0:4:3], [1, 4])
        self.assertEqual(r[3::-1], [4, 3, 2, 1])
        self.assertRaises(TypeError, r.__getitem__, None)

    def test_ass_subscript(self):
        r = Rect(0, 0, 0, 0)
        r[...] = 1, 2, 3, 4
        self.assertEqual(r, [1, 2, 3, 4])
        self.assertRaises(TypeError, r.__setitem__, None, 0)
        self.assertEqual(r, [1, 2, 3, 4])
        self.assertRaises(TypeError, r.__setitem__, 0, "")
        self.assertEqual(r, [1, 2, 3, 4])
        self.assertRaises(IndexError, r.__setitem__, 4, 0)
        self.assertEqual(r, [1, 2, 3, 4])
        self.assertRaises(IndexError, r.__setitem__, -5, 0)
        self.assertEqual(r, [1, 2, 3, 4])
        r[0] = 10
        self.assertEqual(r, [10, 2, 3, 4])
        r[3] = 40
        self.assertEqual(r, [10, 2, 3, 40])
        r[-1] = 400
        self.assertEqual(r, [10, 2, 3, 400])
        r[-4] = 100
        self.assertEqual(r, [100, 2, 3, 400])
        r[1:3] = 0
        self.assertEqual(r, [100, 0, 0, 400])
        r[...] = 0
        self.assertEqual(r, [0, 0, 0, 0])
        r[:] = 9
        self.assertEqual(r, [9, 9, 9, 9])
        r[:] = 11, 12, 13, 14
        self.assertEqual(r, [11, 12, 13, 14])
        r[::-1] = r
        self.assertEqual(r, [14, 13, 12, 11])


@unittest.skipIf(IS_PYPY, "fails on pypy")
class SubclassTest(unittest.TestCase):
    class MyRect(Rect):
        def __init__(self, *args, **kwds):
            super(SubclassTest.MyRect, self).__init__(*args, **kwds)
            self.an_attribute = True

    def test_copy(self):
        mr1 = self.MyRect(1, 2, 10, 20)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.copy()
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_move(self):
        mr1 = self.MyRect(1, 2, 10, 20)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.move(1, 2)
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_inflate(self):
        mr1 = self.MyRect(1, 2, 10, 20)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.inflate(2, 4)
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_clamp(self):
        mr1 = self.MyRect(19, 12, 5, 5)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.clamp(Rect(10, 10, 10, 10))
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_clip(self):
        mr1 = self.MyRect(1, 2, 3, 4)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.clip(Rect(0, 0, 3, 4))
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_union(self):
        mr1 = self.MyRect(1, 1, 1, 2)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.union(Rect(-2, -2, 1, 2))
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_unionall(self):
        mr1 = self.MyRect(0, 0, 1, 1)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.unionall([Rect(-2, -2, 1, 1), Rect(2, 2, 1, 1)])
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")

    def test_fit(self):
        mr1 = self.MyRect(10, 10, 30, 30)
        self.assertTrue(mr1.an_attribute)
        mr2 = mr1.fit(Rect(30, 30, 15, 10))
        self.assertTrue(isinstance(mr2, self.MyRect))
        self.assertRaises(AttributeError, getattr, mr2, "an_attribute")


if __name__ == "__main__":
    unittest.main()