# hasNoETest.py     P.Conrad for CS5NM, Fall 2008, UC Santa Barbara
# Incorporates code from Think Python, by Allen B. Downey, from Chapter 9
# Shows how to use check_expect testing with string functions


################################################################
# Here is the function definition from Chapter 9 (section 9.3)
################################################################

def has_no_e(word):
   for letter in word:
     if letter == 'e':
       return False
   return True

#####################################
# Here is our check_expect function
#####################################

# check_expect checks whether a function produces the expected result
# consumes:
#     test: a string describing the test
#    check: the value we are testing (typically result of a function call)
#   expect: the value we are expecting (typically a literal value)
# produces:
#    nothing (there is no return value)
# side effect:
#    prints a message indicating whether the test passed or failed

def check_expect(test,check,expect):
    if (check == expect):
        print "Test " + test + " passed."
    else:
        print "Test " + test + " failed: expected " + str(expect)  + \
              " but I got " + str(check)

###############################################################
# Here are tests to see if has_no_e(word) functions correctly
###############################################################

check_expect("has_no_e('Fred')",has_no_e('Fred'),False)
check_expect("has_no_e('Jane')",has_no_e('Jane'),False)
check_expect("has_no_e('Santa')",has_no_e('Santa'),True)
check_expect("has_no_e('Barbara')",has_no_e('Barbara'),True)
check_expect("has_no_e('Goleta')",has_no_e('Goleta'),False)
check_expect("has_no_e('Edward')",has_no_e('Edward'),False)
check_expect("has_no_e('Ice Cream')",has_no_e('Ice Cream'),False)