Basic calc

String Calculator.py

+#test no string
+#test add 1 string
+#test adding 2 strings
+import unittest
+
+class StringCalculator:
+    def add (self, numbers : str)-> int: #Erwartet Integer
+        if not numbers:
+            return 0
+        else:
+            number_list = numbers.split(',')#aufteilung der strings
+            if len(number_list) ==1:
+                return int(number_list[0])#bei einem string wird er in int umgewandelt
+            elif len(number_list)==2:
+                return int(number_list[0])+ int(number_list[1])#bei 2 strings wird beides in int verwandelt und die summe zurück gegeben(Position 1/0+Position 2/1)
+            return 0
+        
+    
+class TestStingCalculator(unittest.TestCase):
+    def test_empty_string(self):
+        calculator = StringCalculator()
+        self.assertEqual(calculator.add(""), 0) #leerer string + 0
+    def test_single_number(self):
+        calculator = StringCalculator()
+        self.assertEqual(calculator.add("5"),5) #eingabe von einem String
+    def test_multiple_numbers(self):
+        calculator=StringCalculator()
+        self.assertEqual(calculator.add("5,5"),10)#eingabe mehrere strings
+
+if __name__=='__main__':
+    unittest.main()
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