pygame / test / rect_test.py

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if __name__ == '__main__':
    import sys
    import os
    pkg_dir = os.path.split(os.path.abspath(__file__))[0]
    parent_dir, pkg_name = os.path.split(pkg_dir)
    is_pygame_pkg = (pkg_name == 'tests' and
                     os.path.split(parent_dir)[1] == 'pygame')
    if not is_pygame_pkg:
        sys.path.insert(0, parent_dir)
else:
    is_pygame_pkg = __name__.startswith('pygame.tests.')

if is_pygame_pkg:
    from pygame.tests.test_utils import test_not_implemented, unittest
else:
    from test.test_utils import test_not_implemented, unittest
from pygame import Rect

class RectTypeTest( unittest.TestCase ):
    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 ):
        r = Rect( 1, 2, -3, -6 )
        r2 = Rect(r)
        r2.normalize()
        self.failUnless( r2.width >= 0 )
        self.failUnless( r2.height >= 0 )
        self.assertEqual( (abs(r.width),abs(r.height)), r2.size )
        self.assertEqual( (-2,-4), r2.topleft )

    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_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_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_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_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_centery( self ):
        """Changing the centerx 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_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_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_topright( self ):
        """Changing the bottomleft 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_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_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_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_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_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_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_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_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_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_contains( self ):
        r = Rect( 1, 2, 3, 4 )
        
        self.failUnless( r.contains( Rect( 2, 3, 1, 1 ) ),
                         "r does not contain Rect(2,3,1,1)" )
        self.failUnless( r.contains( Rect(r) ),
                         "r does not contain the same rect as itself" )
        self.failUnless( r.contains( Rect(2,3,0,0) ),
                         "r does not contain an empty rect within its bounds" )
        self.failIf( r.contains( Rect(0,0,1,2) ),
                     "r contains Rect(0,0,1,2)" )
        self.failIf( r.contains( Rect(4,6,1,1) ),
                     "r contains Rect(4,6,1,1)" )
        self.failIf( 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.failUnless( r.collidepoint( r.left, r.top ),
                         "r does not collide with point (left,top)" )
        self.failIf( r.collidepoint( r.left-1, r.top ),
                     "r collides with point (left-1,top)"  )
        self.failIf( r.collidepoint( r.left, r.top-1 ),
                     "r collides with point (left,top-1)"  )
        self.failIf( r.collidepoint( r.left-1,r.top-1 ),
                     "r collides with point (left-1,top-1)"  )
        
        self.failUnless( r.collidepoint( r.right-1, r.bottom-1 ),
                         "r does not collide with point (right-1,bottom-1)")
        self.failIf( r.collidepoint( r.right, r.bottom ),
                     "r collides with point (right,bottom)" )
        self.failIf( r.collidepoint( r.right-1, r.bottom ),
                     "r collides with point (right-1,bottom)" )
        self.failIf( 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" )
        
    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 )
    
    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_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_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 )



    def test_colliderect( self ):
        r1 = Rect(1,2,3,4)
        self.failUnless( r1.colliderect( Rect(0,0,2,3) ),
                         "r1 does not collide with Rect(0,0,2,3)" )
        self.failIf( r1.colliderect( Rect(0,0,1,2) ),
                     "r1 collides with Rect(0,0,1,2)" )
        self.failIf( r1.colliderect( Rect(r1.right,r1.bottom,2,2) ),
                     "r1 collides with Rect(r1.right,r1.bottom,2,2)" )
        self.failUnless( 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.failUnless( 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.failUnless( r1.colliderect( Rect(r1) ),
                         "r1 does not collide with an identical rect" )
        self.failIf( r1.colliderect( Rect(r1.right,r1.bottom,0,0) ),
                     "r1 collides with Rect(r1.right,r1.bottom,0,0)" )
        self.failIf( r1.colliderect( Rect(r1.right,r1.bottom,1,1) ),
                     "r1 collides with Rect(r1.right,r1.bottom,1,1)" )

    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);

        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):

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

          # Rect.collidedict(dict): return (key, value)
          # test if one rectangle in a dictionary intersects
          # 
          # Returns the key and value of the first dictionary value that
          # collides with the Rect. If no collisions are found, None is
          # returned.
          # 
          # Rect objects are not hashable and cannot be used as keys in a
          # dictionary, only as values.

        r = Rect(1, 1, 10, 10)
        r1 = Rect(1, 1, 10, 10)
        r2 = Rect(50, 50, 10, 10)
        r3 = Rect(70, 70, 10, 10)
        r4 = Rect(61, 61, 10, 10)

        d = {1: r1, 2: r2, 3: r3}

        rects_values = 1
        val = r.collidedict(d, rects_values)
        self.assertTrue(val)
        self.assertEqual(len(val), 2)
        self.assertEqual(val[0], 1)
        self.assertEqual(val[1], r1)

        none_d = {2: r2, 3: r3}
        none_val = r.collidedict(none_d, rects_values)
        self.assertFalse(none_val)

        barely_d = {1: r1, 2: r2, 3: r3}
        k3, v3 = r4.collidedict(barely_d, rects_values)
        self.assertEqual(k3, 3)
        self.assertEqual(v3, r3)


    def test_collidedictall(self):

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

          # Rect.collidedictall(dict): return [(key, value), ...]
          # test if all rectangles in a dictionary intersect
          # 
          # Returns a list of all the key and value pairs that intersect with
          # the Rect. If no collisions are found an empty dictionary is
          # returned.
          # 
          # Rect objects are not hashable and cannot be used as keys in a
          # dictionary, only as values.

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

        r2 = Rect(1, 1, 10, 10)
        r3 = Rect(5, 5, 10, 10)
        r4 = Rect(10, 10, 10, 10)
        r5 = Rect(50, 50, 10, 10)

        rects_values = 1
        d = {2: r2}
        l = r.collidedictall(d, rects_values)
        self.assertEqual(l, [(2, r2)])

        d2 = {2: r2, 3: r3, 4: r4, 5: r5}
        l2 = r.collidedictall(d2, rects_values)
        self.assertEqual(l2, [(2, r2), (3, r3), (4, r4)])
        
    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.failUnlessEqual(c, r)
        
if __name__ == '__main__':
    unittest.main()
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