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41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
from nose.tools import assert_equal
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class TestStack(object):
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# TODO: It would be better if we had unit tests for each
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# method in addition to the following end-to-end test
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def test_end_to_end(self):
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print('Test: Empty stack')
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stack = Stack()
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assert_equal(stack.peek(), None)
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assert_equal(stack.pop(), None)
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print('Test: One element')
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top = Node(5)
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stack = Stack(top)
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assert_equal(stack.pop(), 5)
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assert_equal(stack.peek(), None)
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print('Test: More than one element')
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stack = Stack()
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stack.push(1)
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stack.push(2)
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stack.push(3)
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assert_equal(stack.pop(), 3)
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assert_equal(stack.peek(), 2)
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assert_equal(stack.pop(), 2)
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assert_equal(stack.peek(), 1)
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assert_equal(stack.is_empty(), False)
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assert_equal(stack.pop(), 1)
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assert_equal(stack.peek(), None)
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assert_equal(stack.is_empty(), True)
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print('Success: test_end_to_end')
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def main():
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test = TestStack()
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test.test_end_to_end()
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if __name__ == '__main__':
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main() |