'''
    CS5001
    Fall 2018
    Test code -- convert from decimal to binary.
    Today's class exercise was to write a function,
    convert_to_binary, that would pass all of these tests,
    using a stack as the only data structure.
'''

import unittest
from decimal_to_binary import convert_to_binary

class TestConversion(unittest.TestCase):
    def test_convert_to_binary(self):
        self.assertEqual(convert_to_binary(0), "0")
        self.assertEqual(convert_to_binary(1), "1")
        self.assertEqual(convert_to_binary(2), "10")
        self.assertEqual(convert_to_binary(3), "11")
        self.assertEqual(convert_to_binary(4), "100")
        self.assertEqual(convert_to_binary(-1), "")
        self.assertEqual(convert_to_binary(-10), "")
        self.assertEqual(convert_to_binary(20), "10100")
        self.assertEqual(convert_to_binary(25), "11001")
        self.assertEqual(convert_to_binary(31), "11111")
        self.assertEqual(convert_to_binary(250), "11111010")
        self.assertEqual(convert_to_binary(256), "100000000")

def main():
    unittest.main(verbosity = 3)

main()