def test_root_incorect(self):
self.assertEqual(
m.root(2, -5), None,
"Expected solution: None -> Can't do even root of a negative number"
)
self.assertEqual(
m.root(0, 17), None,
"Expected solution: None -> Can't do zero root of a number")
self.assertEqual(m.root(-8, 0), None,
"Expected solution: None -> Can't do root of a zero")
self.assertEqual(
m.root(-8, -53), None,
"Expected solution: None -> Can't do even negative root of a negative number"
)
def calcBinary(a, b, operator):
if operator == "+":
return math.add(a, b)
elif operator == "-":
return math.sub(a, b)
elif operator == "×":
return math.mul(a, b)
elif operator == "÷":
try:
return math.div(a, b)
except Exception as e:
return e
elif operator == "√":
try:
return math.root(b, a)
except Exception as e:
return e
elif operator == "^":
try:
return math.pow(a, b)
except Exception as e:
return e
elif operator == "%":
try:
return math.mod(a, b)
except Exception as e:
return e
def eq_pressed(self):
x2 = float(self.result.text())
if self.pushButton_add.isChecked():
result_label = format(m.addition(self.x1, x2), '.15g')
self.pushButton_add.setChecked(False)
elif self.pushButton_sub.isChecked():
result_label = format(m.substraction(self.x1, x2), '.15g')
self.pushButton_sub.setChecked(False)
elif self.pushButton_mul.isChecked():
result_label = format(m.multiplication(self.x1, x2), '.15g')
self.pushButton_mul.setChecked(False)
elif self.pushButton_div.isChecked():
if m.division(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.division(self.x1, x2), '.15g')
self.pushButton_div.setChecked(False)
elif self.pushButton_mod.isChecked():
if m.modulo(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.modulo(self.x1, x2), '.15g')
self.pushButton_mod.setChecked(False)
elif self.pushButton_root.isChecked():
if m.root(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.root(self.x1, x2), '.15g')
self.pushButton_root.setChecked(False)
elif self.pushButton_power.isChecked():
if m.exponencial(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.exponencial(self.x1, x2), '.15g')
self.pushButton_power.setChecked(False)
else:
result_label = self.result.text()
self.result.setText(result_label)
self.x2_type = False
def test_root(self):
numbers_root = [4, 2, 25, 644, 1987, 330.5, 918, 13.1, 43, 6.5, 49, 9]
numbers_results = [
2, 1.414214, 5, 25.377155, 44.575778, 18.179659, 30.298515,
3.619392, 6.557439, 2.54951, 7, 3
]
for i in range(12):
self.assertEqual(math_lib.root(numbers_root[i]),
numbers_results[i])
# TESTING ANOTHER ROOTS
self.assertEqual(math_lib.root(8, 3), 2)
self.assertEqual(math_lib.root(16, 4), 2)
self.assertEqual(math_lib.root(100, 5), 2.511886)
self.assertEqual(math_lib.root(9, 0.5), 81)
self.assertEqual(math_lib.root(5, -1), 0.2)
self.assertEqual(math_lib.root(8, -3), 0.5)
# TESTING ERRORS
self.assertEqual(math_lib.root(-5, 2), ValueError)
self.assertEqual(math_lib.root(-5, -2), ValueError)
self.assertEqual(math_lib.root(5, 0), ValueError)
def calculate_result():
global amount, sum_normal, sum_square, result
sum_normal = m.multiplication(sum_normal,
(m.division(1, amount))) # 1/N * (sum x)
result = m.multiplication(sum_normal, sum_normal) # x^2
result = m.multiplication(result, amount) # N*x^2
result = m.substraction(sum_square, result) # (sum (xi^2)) - (N*x^2)
help = m.substraction(amount, 1) # N - 1
help = m.division(1, help) # 1/(N-1)
result = m.multiplication(help,
result) # (1/(N-1)) * ((sum (xi^2)) - (N*x^2))
result = m.root(2, result)
def test_root_correct_negative_decimal(self):
self.assertAlmostEqual(m.root(-5, -22), -0.5389090339)
self.assertAlmostEqual(m.root(-12, 428.56489), 0.6034833386)
self.assertAlmostEqual(m.root(5.51, -2090278243656.45878),
-172.17564002024687333)
def test_root_correct_positive_decimal(self):
self.assertAlmostEqual(m.root(2, 2), 1.41421356237309504880168872420)
self.assertAlmostEqual(m.root(12, 428.56489), 1.657046576)
self.assertAlmostEqual(m.root(5.58564, 2090278243656), 160.5803766)
def test_root_correct_negative_whole(self):
self.assertAlmostEqual(m.root(7, -10460353203), -27)
self.assertAlmostEqual(m.root(9, -46411484401953), -33)
self.assertAlmostEqual(m.root(23, -94143178827), -3)
def test_root_correct_positive_whole(self):
self.assertAlmostEqual(m.root(5, 601692057), 57)
self.assertAlmostEqual(m.root(8, 16777216), 8)
self.assertAlmostEqual(m.root(3, 2090278243656), 12786)