def test_satisfies_single_letter_rule_2_bcd_20(self):
cursor = Cursor([['A', 'B'], [None, 'D']])
cursor._position = (2, 0)
self.assertFalse(cursor.satisfies_single_letter_rule(['B']))
def test_satisfies_single_letter_rule_2_abc_11(self):
cursor = Cursor([['A', 'B'], ['C', None]])
cursor._position = (1, 1)
self.assertFalse(cursor.satisfies_single_letter_rule(['C']))
def test_satisfies_single_letter_rule_2_abc_20(self):
cursor = Cursor([['A', 'B'], ['C', None]])
cursor._position = (2, 0)
self.assertTrue(cursor.satisfies_single_letter_rule(['A', 'B']))
def test_find_sequences_2_abd(self):
cursor = Cursor([['A', 'B'], [None, 'D']])
self.assertEqual(cursor.find_sequences(), {('A', 'B')})
def test_find_sequences_2_bcd(self):
cursor = Cursor([[None, 'B'], ['C', 'D']])
self.assertEqual(cursor.find_sequences(), {('C', 'D')})
def test_read_northwest_value(self):
cursor = Cursor([['A']])
cursor._position = (1, 1)
self.assertEqual(cursor.read(-1, -1), 'A')
def test_read_out_of_range(self):
cursor = Cursor([[]])
self.assertIsNone(cursor.read())
def test_initial_position(self):
cursor = Cursor([[]])
self.assertEqual(cursor.position, (0, 0))
def test_has_more_rows_negative(self):
cursor = Cursor([[1]])
cursor.advance_row()
self.assertTrue(cursor.has_more_rows())
def test_advance(self):
cursor = Cursor([[1]])
cursor.advance()
self.assertEqual(cursor.position, (1, 0))
def test_has_more_rows_positive(self):
cursor = Cursor([[1]])
self.assertTrue(cursor.has_more_rows())
def test_beyond_fence_1_positive(self):
cursor = Cursor([[1]])
cursor.advance()
cursor.advance()
self.assertTrue(cursor.beyond_fence())
def test_beyond_fence_1_negative(self):
cursor = Cursor([[1]])
cursor.advance()
self.assertFalse(cursor.beyond_fence())
def test_beyond_fence_0_negative(self):
cursor = Cursor([[]])
self.assertFalse(cursor.beyond_fence())
def test_satisfies_single_letter_rule_2_ad_10(self):
cursor = Cursor([['A', None], [None, 'D']])
cursor._position = (1, 0)
self.assertTrue(cursor.satisfies_single_letter_rule(['A']))
def test_advance_row(self):
cursor = Cursor([[]])
cursor.advance_row()
self.assertEqual(cursor.position, (0, 1))
def test_read_value(self):
cursor = Cursor([[1]])
self.assertEqual(cursor.read(), 1)
def test_find_sequences_2_abc(self):
cursor = Cursor([['A', 'B'], ['C', None]])
self.assertEqual(cursor.find_sequences(), {('A', 'B')})
def test_read_northwest_out_of_bounds(self):
cursor = Cursor([['A']])
cursor._position = (0, 0)
self.assertIsNone(cursor.read(-1, -1))
def test_read_value_x_y(self):
cursor = Cursor([[1], [2]])
cursor.advance_row()
self.assertEqual(cursor.read(), 2)
