def test_eq(self):
x1 = task1.ListADT(10)
x2 = task1.ListADT(20)
# Check equality for lists of different size
self.assertTrue(
x1 == x2,
msg="Lists with different capacity should still be equal.")
# Check that equality tests for List type.
append(x1, [1, 2, 3])
self.assertFalse(x1 == [1, 2, 3],
msg="Equality test doesn't check type.")
append(x2, [1, 2, 3])
# Checks to see whether objects of the same ListADT class with the same list are equal
self.assertTrue(
x1 == x2,
msg=
"Different objects of ListADT with same elements should be equal")
# Checks to see whether objects of the same ListADT class with different lists are not equal
append(x2, [1])
self.assertFalse(
x1 == x2,
msg=
"Different objects of ListADT should not be equal if elements are different"
)
def test_eq(self):
x1 = task1.ListADT(10)
x2 = task1.ListADT(20)
# Check equality for lists of different size
self.assertTrue(
x1 == x2,
msg="Lists with different capacity should still be equal.")
# Check that equality tests for List type.
append(x1, [1, 2, 3])
self.assertFalse(x1 == [1, 2, 3], "Equality test doesn't check type.")
def test_init(self):
y = task1.ListADT(10)
self.assertEqual(y.length, 0, msg="Length of empty list should be 0")
# Checks to see whether it'll only accept integer values as original list size
with self.assertRaises(
TypeError,
msg="List cannot have the size of a non-integer value"):
f = task1.ListADT(4.3)
def test_set(self):
x1 = task1.ListADT(10)
append(x1, [1, 2, 3])
# Testing assignment (and implicitly _getitem_)
x1[0] = 8
self.assertTrue(equal(x1, [8, 2, 3]),
msg="Incorrect assignment at index 0")
def test_get(self):
x = task1.ListADT(10)
append(x, [0, 1, 2, 3, 4])
# Check both positive and negative indices
for index, value in [(1, 1), (-2, 3)]:
self.assertEqual(x[index], value, msg="Incorrect _getitem_.")
def test_len(self):
# Test length of an empty list
x = task1.ListADT(20)
self.assertEqual(len(x), 0, msg="Length of empty list should be 0")
# And for a non-empty one
x.insert(0, 2)
self.assertEqual(len(x), 1, msg="Length should be 1")
def test_insert(self):
x = task1.ListADT(10)
# Check insertion at beginning
x.insert(0, 1)
self.assertTrue(equal(x, [1]), msg="Insertion in empty list failed")
# And at end.
x.insert(1, 2)
self.assertTrue(equal(x, [1, 2]), msg="Insertion at end failed")
# Check insertion out-of-bounds
with self.assertRaises(IndexError,
msg="Inserting out of bounds should fail"):
x.insert(6, 8)
with self.assertRaises(
Exception,
msg="Inserting above capacity should raise an exception."):
append(x, [1 for i in range(20)])
# Checks to see whether inserting on a negative index gives correct result
for i in range(10):
x.delete(0)
x.insert(0, 1)
x.insert(-1, 3)
self.assertTrue(equal(x, [1, 3]), msg="Reverse index insertion failed")
# Checks to see whether inserting on a negative index limits gives correct result
x.insert(-2, 4)
self.assertTrue(equal(x, [1, 4, 3]),
msg="Reverse index insertion failed")
def test_delete(self):
x = task1.ListADT(10)
append(x, [0, 1, 2, 3, 4, 5])
# Test deletion from the middle.
x.delete(2)
self.assertTrue(equal(x, [0, 1, 3, 4, 5]),
msg="Delete from middle failed")
# And from a negative index.
x.delete(-4)
self.assertTrue(equal(x, [0, 3, 4, 5]), msg="Negative deletion failed")
def test_str(self):
# Check str for non-empty lists
x = task1.ListADT(10)
append(x, [1, 2, 3])
self.assertEqual(str(x).strip('\n'), '1\n2\n3')
append(x, [4, 4, 4])
# Checks to see if appending multiple times will successfully add onto the original str list
self.assertNotEqual(str(x).strip('\n'), '1\n2\n3\n4\n5\n6')
self.assertEqual(str(x).strip('\n'), '1\n2\n3\n4\n4\n4')
def test_len(self):
# Test length of an empty list
x = task1.ListADT(20)
self.assertEqual(len(x), 0, msg="Length of empty list should be 0")
# And for a non-empty one
x.insert(0, 2)
self.assertEqual(len(x), 1, msg="Length should be 1")
# Testing negative indices on list size
x.insert(-1, 3)
self.assertNotEqual(len(x), 4, msg="Length should not be 4")
self.assertEqual(len(x), 2, msg="Length should be 2")
def test_set(self):
x1 = task1.ListADT(10)
append(x1, [1, 2, 3])
# Testing assignment (and implicitly _getitem_)
x1[0] = 8
self.assertTrue(equal(x1, [8, 2, 3]),
msg="Incorrect assignment at index 0")
# Checks to see whether it throws IndexError for out of range sets
with self.assertRaises(IndexError,
msg="Should have raised an index error"):
x1[3] = 4
with self.assertRaises(IndexError,
msg="Should have raised an index error"):
x1[-4] = 4
def test_insert(self):
x = task1.ListADT(10)
# Check insertion at beginning
x.insert(0, 1)
self.assertTrue(equal(x, [1]), msg="Insertion in empty list failed")
# And at end.
x.insert(1, 2)
self.assertTrue(equal(x, [1, 2]), msg="Insertion at end failed")
# Check insertion out-of-bounds
with self.assertRaises(IndexError,
msg="Inserting out of bounds should fail"):
x.insert(6, 8)
with self.assertRaises(
Exception,
msg="Inserting above capacity should raise an exception."):
append(x, [1 for i in range(20)])
def test_get(self):
x = task1.ListADT(10)
append(x, [0, 1, 2, 3, 4])
# Check both positive and negative indices
for index, value in [(1, 1), (-2, 3)]:
self.assertEqual(x[index], value, msg="Incorrect _getitem_.")
# Checks to see if index error is raised when out of range
with self.assertRaises(IndexError,
msg="Should have raised an index error"):
x[-11]
with self.assertRaises(IndexError,
msg="Should have raised an index error"):
x[-6]
with self.assertRaises(IndexError,
msg="Should have raised an index error"):
x[6]
def test_delete(self):
x = task1.ListADT(10)
append(x, [0, 1, 2, 3, 4, 5])
# Test deletion from the middle.
x.delete(2)
self.assertTrue(equal(x, [0, 1, 3, 4, 5]),
msg="Delete from middle failed")
# And from a negative index.
x.delete(-4)
self.assertTrue(equal(x, [0, 3, 4, 5]), msg="Negative deletion failed")
# Checks to see whether it throws an IndexError for deleting an out of range element
with self.assertRaises(IndexError, msg="Should throw an IndexError"):
x.delete(9)
# Checks to see whether it throws a TypeError for deleting at a non integer index
with self.assertRaises(
TypeError, msg="Deleting string indexes throw a TypeError"):
x.delete("4")
def test_init(self):
y = task1.ListADT(10)
def test_str(self):
# Check str for non-empty lists
x = task1.ListADT(10)
append(x, [1, 2, 3])
self.assertEqual(str(x).strip('\n'), '1\n2\n3')
