# lec12test.py
# Lillian Lee (LJL2)
# Feb 28, 2013

import lec12
import cunittest2


def testes2():
    """test functions num_es2"""
    cunittest2.assert_equals(0, lec12.num_es2('x'))
    cunittest2.assert_equals(0, lec12.num_es2(''))
    cunittest2.assert_equals(1, lec12.num_es2('e'))
    cunittest2.assert_equals(2, lec12.num_es2('else'))
    cunittest2.assert_equals(2, lec12.num_es2('ae  xe'))
    cunittest2.assert_equals(4, lec12.num_es2('xeeeze'))
    cunittest2.assert_equals(3, lec12.num_es2('e sd 45 e e'))
    print "num_es2 tests passed"

def testreverses():
    """test reversal functions"""
    testfn = lec12.reverse
    cunittest2.assert_equals('x', testfn('x'))
    cunittest2.assert_equals('', testfn(''))
    cunittest2.assert_equals('esle', testfn('else'))
    cunittest2.assert_equals('ex  ea', testfn('ae  xe'))
    cunittest2.assert_equals('ezeeex', testfn('xeeeze'))
    cunittest2.assert_equals('e e 54 ds e', testfn('e sd 45 e e'))
    print "first version of reverse tests passed"

    testfn = lec12.reverse2
    cunittest2.assert_equals('x', testfn('x'))
    cunittest2.assert_equals('', testfn(''))
    cunittest2.assert_equals('esle', testfn('else'))
    cunittest2.assert_equals('ex  ea', testfn('ae  xe'))
    cunittest2.assert_equals('ezeeex', testfn('xeeeze'))
    cunittest2.assert_equals('e e 54 ds e', testfn('e sd 45 e e'))
    print "first version of reverse tests passed"


def testispal():
    """test lecture 12's ispalindrome function"""
    cunittest2.assert_equals(True, lec12.ispalindrome(''))
    cunittest2.assert_equals(True, lec12.ispalindrome('x'))
    cunittest2.assert_equals(False, lec12.ispalindrome('ab'))
    cunittest2.assert_equals(True, lec12.ispalindrome('aa'))
    cunittest2.assert_equals(False, lec12.ispalindrome('abda'))
    cunittest2.assert_equals(True, lec12.ispalindrome('abba'))
    cunittest2.assert_equals(True, lec12.ispalindrome('AMANAPLANACANALPANAMA'))
    cunittest2.assert_equals(False, lec12.ispalindrome('AMANAPLANACANAPANAMA'))
    print "ispalindrome tests passed"

if __name__ == '__main__':
    testes2()
    testreverses()
    testispal()
    print 'all test cases for lec12 passed'