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44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
from nose.tools import assert_equal
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class TestStackMin(object):
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def test_stack_min(self):
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print('Test: Push on empty stack, non-empty stack')
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stack = StackMin()
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stack.push(5)
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assert_equal(stack.peek(), 5)
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assert_equal(stack.min(), 5)
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stack.push(1)
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assert_equal(stack.peek(), 1)
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assert_equal(stack.min(), 1)
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stack.push(3)
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assert_equal(stack.peek(), 3)
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assert_equal(stack.min(), 1)
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stack.push(0)
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assert_equal(stack.peek(), 0)
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assert_equal(stack.min(), 0)
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print('Test: Pop on non-empty stack')
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assert_equal(stack.pop(), 0)
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assert_equal(stack.min(), 1)
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assert_equal(stack.pop(), 3)
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assert_equal(stack.min(), 1)
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assert_equal(stack.pop(), 1)
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assert_equal(stack.min(), 5)
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assert_equal(stack.pop(), 5)
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assert_equal(stack.min(), sys.maxsize)
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print('Test: Pop empty stack')
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assert_equal(stack.pop(), None)
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print('Success: test_stack_min')
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def main():
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test = TestStackMin()
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test.test_stack_min()
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if __name__ == '__main__':
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main() |