old_contents: import unittest
  
  from go import Array, ArrayError
  
  
  class ArrayTest(unittest.TestCase):
  
      def test_init(self):
          a = Array(4, 3, 0)
  
          self.assertEqual(a._width, 4)
          self.assertEqual(a._height, 3)
          self.assertEqual(a._empty, 0)
  
          self.assertEqual(
              a._array,
              [
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
              ],
          )
  
      def test_get_or_set_index(self):
          a = Array(4, 3, 0)
  
          a[(1, 1)] = 1
          a[(3, 1)] = 2
  
          self.assertEqual(
              a._array,
              [
                  [1, 0, 2, 0],
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
              ],
          )
  
          self.assertEqual(a[(1, 1)], 1)
          self.assertEqual(a[(2, 1)], 0)
  
      def test_get_or_set_invalid_index(self):
          a = Array(4, 3, 0)
  
          self.assertRaises(ArrayError, a.__getitem__, (10, 10))
          self.assertRaises(ArrayError, a.__setitem__, (10, 10), 10)
  
      def test_equality(self):
          a1 = Array(4, 3, 0)
          a2 = Array(4, 3, 0)
          a3 = Array(4, 3, 0)
  
          a1[(1, 1)] = 1
          a2[(1, 1)] = 1
  
          self.assertEqual(a1, a2)
          self.assertNotEqual(a1, a3)
  
          a4 = Array(5, 5)
          a5 = Array(12, 34)
  
          self.assertNotEqual(a4, a5)
  
new_contents: import unittest
  
  from go import Array, ArrayError
  
  
  class ArrayTest(unittest.TestCase):
  
      def test_init(self):
          a = Array(4, 3, 0)
  
          self.assertEqual(a._width, 4)
          self.assertEqual(a._height, 3)
          self.assertEqual(a._empty, 0)
  
          self.assertEqual(
              a._array,
              [
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
              ],
          )
  
      def test_get_or_set_index(self):
          a = Array(4, 3, 0)
  
          a[1, 1] = 1
          a[3, 1] = 2
  
          self.assertEqual(
              a._array,
              [
                  [1, 0, 2, 0],
                  [0, 0, 0, 0],
                  [0, 0, 0, 0],
              ],
          )
  
          self.assertEqual(a[1, 1], 1)
          self.assertEqual(a[2, 1], 0)
  
      def test_get_or_set_invalid_index(self):
          a = Array(4, 3, 0)
  
          self.assertRaises(ArrayError, a.__getitem__, (10, 10))
          self.assertRaises(ArrayError, a.__setitem__, (10, 10), 10)
  
      def test_equality(self):
          a1 = Array(4, 3, 0)
          a2 = Array(4, 3, 0)
          a3 = Array(4, 3, 0)
  
          a1[1, 1] = 1
          a2[1, 1] = 1
  
          self.assertEqual(a1, a2)
          self.assertNotEqual(a1, a3)
  
          a4 = Array(5, 5)
          a5 = Array(12, 34)
  
          self.assertNotEqual(a4, a5)
  
subject: Update array_test.py