request for Scientific Calculator

calctests.py

@@ -2,24 +2,106 @@
 from calculator import Calculator
 
 
-class TestStringMethods(unittest.TestCase):
+class TestCalculator(unittest.TestCase):
+    """ When the test case is executed,
+        setUp() method gets executed first."""
 
-    def test_add(self):
-        c = Calculator()
-        self.assertEqual(c.add(3, 3), 6)
+    def setUp(self):
+        self.calculator = Calculator()
 
-    def test_add2(self):
-        c = Calculator()
-        self.assertEqual(c.add(12, -10), 2)
+    """ test each method in the Calculator class.
+        assertEqual checks if the Calculator methods returns 
+        the expected value."""
 
-    def test_add3(self):
-        c = Calculator()
-        self.assertEqual(c.add(5, 8), 13)
+    def test_add(self):
+        self.assertEqual(self.calculator.add(4, 7), 11)
 
     def test_sub(self):
-        c = Calculator()
-        self.assertEqual(c.sub(9, 3), 6)
+        self.assertEqual(self.calculator.sub(10, 5), 5)
+
+    def test_mult(self):
+        self.assertEqual(self.calculator.mult(3, 7), 21)
+
+    def test_div(self):
+        self.assertEqual(self.calculator.div(10, 2), 5)
+
+    def test_sq(self):
+        self.assertEqual(self.calculator.sq(2), 4)
+
+    def test_sqrt(self):
+        self.assertEqual(self.calculator.sqrt(4), 2)
+
+    def test_varexp(self):
+        self.assertEqual(self.calculator.varexp(10, 2), 100)
+
+    def test_inverse(self):
+        self.assertEqual(self.calculator.inverse(10), 0.1)
+
+    def test_invert_sign(self):
+        self.assertEqual(self.calculator.invert_sign(10), -10)
+
+    def test_sin_deg(self):
+        self.assertEqual(self.calculator.sin_deg(45), 0.7071067811865475)
+
+    def test_sin_rad(self):
+        self.assertEqual(self.calculator.sin_rad(45), 0.8509035245341184)
+
+    def test_cos_deg(self):
+        self.assertEqual(self.calculator.cos_deg(45), 0.7071067811865476)
+
+    def test_cos_rad(self):
+        self.assertEqual(self.calculator.cos_rad(45), 0.5253219888177297)
+
+    def test_tan_deg(self):
+        self.assertEqual(self.calculator.tan_deg(45), 0.9999999999999999)
+
+    def test_tan_rad(self):
+        self.assertEqual(self.calculator.tan_rad(45), 1.6197751905438615)
+
+    def test_inv_sin_deg(self):
+        self.assertEqual(self.calculator.inv_sin_deg(45), 0.7071067811865475)
+
+    def test_inv_sin_rad(self):
+        self.assertEqual(self.calculator.inv_sin_rad(45), 0.8509035245341184)
+
+    def test_inv_cos_deg(self):
+        self.assertEqual(self.calculator.inv_cos_deg(45), 0.7071067811865476)
+
+    def test_inv_cos_rad(self):
+        self.assertEqual(self.calculator.inv_cos_rad(45), 0.5253219888177297)
+
+    def test_inv_tan_deg(self):
+        self.assertEqual(self.calculator.inv_tan_deg(45), 0.9999999999999999)
+
+    def test_inv_tan_rad(self):
+        self.assertEqual(self.calculator.inv_tan_rad(45), 1.6197751905438615)
+
+    def test_trig_units_mode_deg_to_rad(self):
+        self.assertEqual(self.calculator.trig_units_mode_deg_to_rad(45), 0.7853981633974483)
+
+    def test_trig_units_mode_rad_to_deg(self):
+        self.assertEqual(self.calculator.trig_units_mode_rad_to_deg(45), 2578.3100780887044)
+
+    def test_factorial(self):
+        self.assertEqual(self.calculator.factorial(5), 120)
+
+    def test_log(self):
+        self.assertEqual(self.calculator.log(45, 10), 1.6532125137753435)
+
+    def test_inverse_log(self):
+        self.assertEqual(self.calculator.inverse_log(3), 1000)
+
+    def test_inv_ln(self):
+        self.assertEqual(self.calculator.inv_ln(3), 20.085536923187668)
+
+    def test_pi(self):
+        self.assertEqual(self.calculator.pi(), 3.141592653589793)
+
+    def test_e(self):
+        self.assertEqual(self.calculator.e(), 2.718281828459045)
 
 
-if __name__ == '__main__':
+""" runs the test case TestCalculator. executes each test method 
+    defined in the class and gives us the result."""
+if __name__ == "__main__":
     unittest.main()

calculator.py

@@ -1,3 +1,6 @@
+import math
+
+
 class Calculator:
 
     def __init__(self):
@@ -7,6 +10,116 @@ def add(self, x, y):
         return x + y
 
     def sub(self, x, y):
-        return 0
+        return x - y
+
+    def mult(self, x, y):
+        return x * y
+
+    def div(self, x, y):
+        if y == 0:
+            print(Err)
+        return x / y
+
+    def sq(self, x):
+        return x ** 2
+
+    def sqrt(self, x):
+        return x ** (1 / 2)
+
+    def varexp(self, x, y):
+        return x ** y
+
+    def inverse(self, x):
+        return 1 / x
+
+    def invert_sign(self, x):
+        return x * -1
+
+    def switchDisplayMode(self, string_mode, x):
+        """
+        Switch display mode (binary, octal, decimal, hexadecimal)
+        switchDisplayMode(String mode) should set the display to the mode given
+        :param string_mode:
+        :return:
+        """
+
+        if (string_mode == 'bin'):
+
+            return str(bin(int(x)).replace("0b", ""))
+        elif (string_mode == 'dec'):
+            return str(round(float(x), 2))
+        elif (string_mode == 'oct'):
+            return str(oct(int(x)).replace("0o", ""))
+        elif (string_mode == 'hex'):
+            return str(hex(int(x)).replace("0x", ""))
+        else:
+            return str('invalid selection')
+
+    def sin_deg(self, x):
+        x = math.radians(x)
+        return math.sin(x)
+
+    def sin_rad(self, x):
+        return math.sin(x)
+
+    def cos_deg(self, x):
+        return math.cos(math.radians(x))
+
+    def cos_rad(self, x):
+        return math.cos(x)
+
+    def tan_deg(self, x):
+        return math.tan(math.radians(x))
+
+    def tan_rad(self, x):
+        return math.tan(x)
+
+    def inv_sin_deg(self, x):
+        return math.sin(math.radians(x))
+
+    def inv_sin_rad(self, x):
+        return math.sin(x)
+
+    def inv_cos_deg(self, x):
+        return math.cos(math.radians(x))
+
+    def inv_cos_rad(self, x):
+        return math.cos(x)
+
+    def inv_tan_deg(self, x):
+        return math.tan(math.radians(x))
+
+    def inv_tan_rad(self, x):
+        return math.tan(x)
+
+    def trig_units_mode_deg_to_rad(self, x):
+        return math.radians(x)
+
+    def trig_units_mode_rad_to_deg(self, x):
+        return math.degrees(x)
+
+    def factorial(self,x ):
+        return math.factorial(x)
+
+    def log(self, x, base):
+        return math.log(x,base)
+
+    def inverse_log(self,x):
+        return 10**x
+
+    def inv_ln(self,x):
+        return math.exp(x)
+
+    def pi(self):
+        return math.pi
+
+    def e(self):
+        return math.e
+
+    def madd(self, x, memory):
+        memory = x + memory
+        return memory
 
-# add lots more methods to this calculator class.
+    def mclear(self):
+        memory=0
+        return memory