def testD():
"test procedure for part D"
# Test is_currency
cornell.assert_equals(True, a1.iscurrency('USD'))
cornell.assert_equals(True, a1.iscurrency('SAR'))
cornell.assert_equals(False, a1.iscurrency(' '))
cornell.assert_equals(False, a1.iscurrency('sar'))
#Test Exchange
cornell.assert_floats_equal(112.518, a1.exchange('USD', 'SAR', 30))
def test_asserts():
"""
This is a simple test procedure to help you understand how assert works
"""
print('Testing the cornell asserts')
cornell.assert_equals('b c', 'ab cd'[1:4])
#cornell.assert_equals('b c', 'ab cd'[1:3]) # UNCOMMENT ONLY WHEN DIRECTED
cornell.assert_true(3 < 4)
cornell.assert_equals(3, 1+2)
cornell.assert_equals(3.0, 1.0+2.0)
cornell.assert_floats_equal(6.3, 3.1+3.2)
def testD():
"""Test procedure for functions iscurrency and exchange"""
#Test case for valid iscurrency
result24 = a1.iscurrency('USD')
cornell.assert_equals = (True, result24)
#test case for invalid iscurrency
result25 = a1.iscurrency('AAA')
cornell.assert_equals = (False, result25)
#Test case for invalid iscurrency
result26 = a1.iscurrency('usd')
cornell.assert_equals = (False, result26)
#Test case for valid exchange
result27 = a1.exchange('USD','HKD',1.0)
cornell.assert_floats_equal(7.82541, result27)
def testD():
"""Test procedure for Part A"""
result = a1.iscurrency('USD')
cornell.assert_true(True)
result = a1.iscurrency('')
cornell.assert_equals(False, result)
result = a1.iscurrency('E')
cornell.assert_equals(False, result)
result = a1.iscurrency('zxcvbn')
cornell.assert_equals(False, result)
result = a1.exchange('USD', 'EUR', 2.5)
cornell.assert_floats_equal(2.0952375, result)
result = a1.exchange('SVC', 'GEL', 3.5254023347401)
cornell.assert_floats_equal(1, result)
result = a1.exchange('USD', 'EUR', 3)
cornell.assert_floats_equal(2.514285, result)