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from algorithms.stack import (

first_is_consecutive, second_is_consecutive,

is_sorted,

remove_min,

first_stutter, second_stutter,

first_switch_pairs, second_switch_pairs,

is_valid,

simplify_path,

ArrayStack, LinkedListStack,

OrderedStack

)

import unittest

class TestSuite(unittest.TestCase):

def test_is_consecutive(self):

self.assertTrue(first_is_consecutive([3, 4, 5, 6, 7]))

self.assertFalse(first_is_consecutive([3, 4, 6, 7]))

self.assertFalse(first_is_consecutive([3, 2, 1]))

self.assertTrue(second_is_consecutive([3, 4, 5, 6, 7]))

self.assertFalse(second_is_consecutive([3, 4, 6, 7]))

self.assertFalse(second_is_consecutive([3, 2, 1]))

def test_is_sorted(self):

# Test case: bottom [6, 3, 5, 1, 2, 4] top

self.assertFalse(is_sorted([6, 3, 5, 1, 2, 4]))

self.assertTrue(is_sorted([1, 2, 3, 4, 5, 6]))

self.assertFalse(is_sorted([3, 4, 7, 8, 5, 6]))

def test_remove_min(self):

# Test case: bottom [2, 8, 3, -6, 7, 3] top

self.assertEqual([2, 8, 3, 7, 3], remove_min([2, 8, 3, -6, 7, 3]))

# Test case: 2 smallest value [2, 8, 3, 7, 3]

self.assertEqual([4, 8, 7], remove_min([4, 8, 3, 7, 3]))

def test_stutter(self):

# Test case: bottom [3, 7, 1, 14, 9] top

self.assertEqual([3, 3, 7, 7, 1, 1, 14, 14, 9, 9],

first_stutter([3, 7, 1, 14, 9]))

self.assertEqual([3, 3, 7, 7, 1, 1, 14, 14, 9, 9],

second_stutter([3, 7, 1, 14, 9]))

def test_switch_pairs(self):

# Test case: even number of values in stack

# bottom [3, 8, 17, 9, 1, 10] top

self.assertEqual([8, 3, 9, 17, 10, 1],

first_switch_pairs([3, 8, 17, 9, 1, 10]))

self.assertEqual([8, 3, 9, 17, 10, 1],

second_switch_pairs([3, 8, 17, 9, 1, 10]))

# Test case: odd number of values in stack

# bottom [3, 8, 17, 9, 1] top

self.assertEqual([8, 3, 9, 17, 1],

first_switch_pairs([3, 8, 17, 9, 1]))

self.assertEqual([8, 3, 9, 17, 1],

second_switch_pairs([3, 8, 17, 9, 1]))

def test_is_valid_parenthesis(self):

self.assertTrue(is_valid("[]"))

self.assertTrue(is_valid("[]()[]"))

self.assertFalse(is_valid("[[[]]"))

self.assertTrue(is_valid("{([])}"))

self.assertFalse(is_valid("(}"))

def test_simplify_path(self):

p = '/my/name/is/..//keon'

self.assertEqual('/my/name/keon', simplify_path(p))

class TestStack(unittest.TestCase):

def test_ArrayStack(self):

stack = ArrayStack()

stack.push(1)

stack.push(2)

stack.push(3)

# test __iter__()

it = iter(stack)

self.assertEqual(3, next(it))

self.assertEqual(2, next(it))

self.assertEqual(1, next(it))

self.assertRaises(StopIteration, next, it)

# test __len__()

self.assertEqual(3, len(stack))

# test __str__()

self.assertEqual(str(stack), "Top-> 3 2 1")

# test is_empty()

self.assertFalse(stack.is_empty())

# test peek()

self.assertEqual(3, stack.peek())

# test pop()

self.assertEqual(3, stack.pop())

self.assertEqual(2, stack.pop())

self.assertEqual(1, stack.pop())

self.assertTrue(stack.is_empty())

def test_LinkedListStack(self):

stack = LinkedListStack()

stack.push(1)

stack.push(2)

stack.push(3)

# test __iter__()

it = iter(stack)

self.assertEqual(3, next(it))

self.assertEqual(2, next(it))

self.assertEqual(1, next(it))

self.assertRaises(StopIteration, next, it)

# test __len__()

self.assertEqual(3, len(stack))

# test __str__()

self.assertEqual(str(stack), "Top-> 3 2 1")

# test is_empty()

self.assertFalse(stack.is_empty())

# test peek()

self.assertEqual(3, stack.peek())

# test pop()

self.assertEqual(3, stack.pop())

self.assertEqual(2, stack.pop())

self.assertEqual(1, stack.pop())

self.assertTrue(stack.is_empty())

class TestOrderedStack(unittest.TestCase):

def test_OrderedStack(self):

stack = OrderedStack()

self.assertTrue(stack.is_empty())

stack.push(1)

stack.push(4)

stack.push(3)

stack.push(6)

"bottom - > 1 3 4 6 "

self.assertEqual(6, stack.pop())

self.assertEqual(4, stack.peek())

self.assertEqual(3, stack.size())

if __name__ == "__main__":

unittest.main()