def test_compare_precendence(self):
x = Calculator()
assert x._compare_precedence("^", "^") == 0
assert x._compare_precedence("^", "*") > 0
assert x._compare_precedence("*", "+") > 0
assert x._compare_precedence("-", "^") < 0
assert x._compare_precedence("*", "^") < 0
def test_postfix_doctest(self):
x = Calculator()
assert x.postfix(' 2 ^ 4') == '2.0 4.0 ^'
assert x.postfix('2') == '2.0'
assert x.postfix(
'2.1*5+3^2+1+4.45') == '2.1 5.0 * 3.0 2.0 ^ + 1.0 + 4.45 +'
assert x.postfix(
' 2 * 5.34 + 3 ^ 2 + 1+4 '
) == '2.0 5.34 * 3.0 2.0 ^ + 1.0 + 4.0 +'
assert x.postfix(' 2.1 * 5 + 3 ^ 2+ 1 + 4'
) == '2.1 5.0 * 3.0 2.0 ^ + 1.0 + 4.0 +'
assert x.postfix('(2.5)') == '2.5'
assert x.postfix('((2))') == '2.0'
assert x.postfix(' -2 * (( 5 + 3) ^ 2+(1 +4)) '
) == '-2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
assert x.postfix(' ( 2 * (( 5 + 3) ^ 2+(1 +4))) '
) == '2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
assert x.postfix(' (( 2 * (( 5 + 3) ^ 2+(1 +4)))) '
) == '2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
assert x.postfix(' 2 * ( 5 + 3) ^ 2+(1 +4) '
) == '2.0 5.0 3.0 + 2.0 ^ * 1.0 4.0 + +'
assert x.postfix(' 23 / 12 - 223 + 5.25 * 4 * 3423'
) == '23.0 12.0 / 223.0 - 5.25 4.0 * 3423.0 * +'
assert x.postfix('2 * 5 + 3 ^ -2 +1 +4') is None
assert x.postfix('2 5') is None
assert x.postfix('25 +') is None
assert x.postfix(' 2 * ( 5 + 3) ^ 2+(1 +4 ') is None
assert x.postfix('2*(5 +3)^ 2+)1 +4( ') is None
assert x.postfix('42 + 41 - 4892798*42 - a 42') is None
assert x.postfix('42 + 41 - 4892798*42 - 12'
) == '42.0 41.0 + 4892798.0 42.0 * - 12.0 -'
x.extra_credit = True
assert x.postfix('(2.5)(1)(5)') == '2.5 1.0 * 5.0 *'
assert x.postfix('42 + 41 - 4892798*42 - 12'
) == '42.0 41.0 + 4892798.0 42.0 * - 12.0 -'
assert x.postfix('42 + 41 - 4892798*42 - a 42') is None
assert x.postfix('7*0-(799) - (-7) +56 ^ 90'
) == '7.0 0.0 * 799.0 - -7.0 - 56.0 90.0 ^ +'
assert x.postfix('4 - (9) -905 35 +24 ^77') is None
def test_is_number(self):
x = Calculator()
assert x.isNumber('hello') is False
assert x.isNumber('1.2') is True
assert x.isNumber('1.2.3') is False
assert x.isNumber(' 13 ') is True
assert x.isNumber(' 12 3') is False
assert x.isNumber('4/5') is False
assert x.isNumber('9-8') is False
assert x.isNumber('9.978879824578798') is True
assert x.isNumber('-0970785') is True
assert x.isNumber('43$') is False
def test_preprocess_and_validate(self):
x = Calculator(extra_credit=True)
assert x._preprocess_and_validate(
' 2 * ( 5 + 3) ^ 2+(1 +4 ') is None
assert x._preprocess_and_validate('2*(5 +3)^ 2+)1 +4( ') is None
assert x._preprocess_and_validate('25 +') is None
assert x._preprocess_and_validate('2 5') is None
assert x._preprocess_and_validate(
'2 * 5 + 3 ^ -2 +1 +4') == [
"2", "*", "5", "+", "3", "^", "-2", "+", "1", "+", "4"
]
assert x._preprocess_and_validate("2(4)") == ["2", "*", "(", "4", ")"]
assert x._preprocess_and_validate("5(3*7+25-2187^78)") == [
'5', '*', '(', '3', '*', '7', '+', '25', '-', '2187', '^', '78',
')'
]
assert x._preprocess_and_validate("543(90-78)(") is None
assert x._preprocess_and_validate(
"65 + (4) - 13 ^7-(-1) + 31-69") == [
'65', '+', '(', '4', ')', '-', '13', '^', '7', '-', '(', '-1',
')', '+', '31', '-', '69'
]
x.extra_credit = False
assert x._preprocess_and_validate(
'2 * 5 + 3 ^ -2 +1 +4') is None
assert x._preprocess_and_validate("2(4)") is None
assert x._preprocess_and_validate(' 2*2+6-34^78') == [
'2', '*', '2', '+', '6', '-', '34', '^', '78'
]
assert x._preprocess_and_validate("5(3*7+25-2187^78)") is None
assert x._preprocess_and_validate("543(90-78)(") is None
assert x._preprocess_and_validate(
"65 + (4) - 13 ^7-(-1) + 31-69") is None
def test_validate_parentheses(self):
x = Calculator()
assert x._validate_parentheses("(())") is True
assert x._validate_parentheses("))(())()((") is False
assert x._validate_parentheses(")(") is False
assert x._validate_parentheses(
"(asdsadsadsadsadsa(asdsadsadds(sadsada)))") is True
assert x._validate_parentheses("hifhsv())()))()(((") is False
assert x._validate_parentheses("314314") is True
assert x._validate_parentheses("-0-909r viurvpu()9efi cd()") is True
assert x._validate_parentheses("[][]{}{][]()()") is True
assert x._validate_parentheses("[()][()]][") is True
def test_calculate_doctest(self):
x = Calculator()
x.expr = ' 4 + 3 -2'
assert x.calculate == 5.0
x.expr = ' -2 +3.5'
assert x.calculate == 1.5
x.expr = '4+3.65-2 /2'
assert x.calculate == 6.65
x.expr = ' 23 / 12 - 223 + 5.25 * 4 * 3423'
assert x.calculate == 71661.91666666667
x.expr = ' 2 - 3 *4'
assert x.calculate == -10.0
x.expr = ' 3 * ( ( (10 - 2*3)))'
assert x.calculate == 12.0
x.expr = ' 8 / 4 * (3 - 2.45 * ( 4- 2 ^ 3)) + 3'
assert x.calculate == 28.6
x.expr = ' 2 * ( 4 + 2 * (5-3^2)+1)+4'
assert x.calculate == -2.0
x.expr = '2.5 + 3 * ( 2 +(3.0) *(5^2 - 2*3^(2) ) *(4) ) * ( 2 /8 + 2*( 3 - 1/ 3) ) - 2/ 3^2'
assert x.calculate == 1442.7777777777778
x.expr = "4++ 3 +2"
assert x.calculate is None
x.expr = "4 3 +2"
assert x.calculate is None
x.expr = '(2)*10 - 3*(2 - 3*2)) '
assert x.calculate is None
x.expr = '(2)*10 - 3*/(2 - 3*2) '
assert x.calculate is None
x.expr = ')2(*10 - 3*(2 - 3*2) '
assert x.calculate is None
x.extra_credit = True
x.expr = '(2.5)(1)(5)'
assert x.calculate == 12.5
x.expr = '3(6)'
assert x.calculate == 18
x.expr = '(6)3'
assert x.calculate == 18
x.expr = '9-(-9) + 79-27'
assert x.calculate == 70.0
x.expr = '1.9 ^1 -2'
assert x.calculate == -0.10000000000000009
x.expr = '4^^2-4'
assert x.calculate is None
x.expr = '1(3-3)^0-0*(24-12)'
assert x.calculate == 1.0
x.expr = '0^1 - 90 + 9^2-(9*(9))-(-9)'
assert x.calculate == -81.0
x.expr = '0^(2-2)+50-5*2 + 2(9)+ 3 ^ 2 + 5309 ^ (0)'
assert x.calculate == 69.0
from HW3 import Calculator
x = Calculator()
print('------- Postfix Test Case --------------')
print(x.postfix(' 2 ^ 4'))
#'2.0 4.0 ^'
print(x.postfix('2'))
# '2.0'
print(x.postfix('2.1*5+3^2+1+4.45'))
# '2.1 5.0 * 3.0 2.0 ^ + 1.0 + 4.45 +'
print(x.postfix(' 2 * 5.34 + 3 ^ 2 + 1+4 '))
# '2.0 5.34 * 3.0 2.0 ^ + 1.0 + 4.0 +'
print(x.postfix(' 2.1 * 5 + 3 ^ 2+ 1 + 4'))
# '2.1 5.0 * 3.0 2.0 ^ + 1.0 + 4.0 +'
print(x.postfix('(2.5)'))
# '2.5'
print(x.postfix ('((2))'))
# '2.0'
print(x.postfix (' -2 * (( 5 + 3) ^ 2+(1 +4)) '))
'-2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
print(x.postfix (' ( 2 * (( 5 + 3) ^ 2+(1 +4))) '))
# '2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
print(x.postfix (' (( 2 * (( 5 + 3) ^ 2+(1 +4)))) '))
# '2.0 5.0 3.0 + 2.0 ^ 1.0 4.0 + + *'
print(x.postfix(' 2 * ( 5 + 3) ^ 2+(1 +4) '))
# '2.0 5.0 3.0 + 2.0 ^ * 1.0 4.0 + +'
print(x.postfix('2 * 5 + 3 ^ -2 +1 +4'))
# 'error message'
print(x.postfix('2 5'))