Merge pull request 12meses12katas#104 from Amedio/master

Python StringCalculator

amedio/.gitignore

@@ -0,0 +1,15 @@
+*.pydevproject
+.project
+.metadata
+bin/**
+tmp/**
+tmp/**/*
+*.pyc
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.classpath
+.settings/
+.loadpath

amedio/src/main/Calculator.py

@@ -0,0 +1,17 @@
+from src.main.constants import _constants
+
+class Calculator(object):
+
+    def __init__(self):
+        pass
+
+    def add(self, addParams):
+
+        result = 0
+
+        if addParams != "":
+            const = _constants()
+            for calcParam in addParams.replace(const.COMMA_SEP(), const.NEW_LINE_SEP()).split(const.NEW_LINE_SEP()):
+                result += int(calcParam)
+
+        return result

amedio/src/main/constants.py

@@ -0,0 +1,10 @@
+class _constants(object):
+
+    def __init__(self):
+        pass
+
+    def COMMA_SEP(self):
+        return ','
+
+    def NEW_LINE_SEP(self):
+        return '\\n'

amedio/src/test/CalculatorTest.py

@@ -0,0 +1,123 @@
+import unittest
+from src.main.calculator import Calculator
+
+
+class CalculatorTest(unittest.TestCase):
+
+    def testAddNoParams(self):
+
+        calc = Calculator()
+
+        expected = 0
+        resulted = calc.add("")
+
+        self.assertEquals(expected, resulted, "Adding no params Error")
+
+        pass
+
+    def testAddOneParam(self):
+
+        calc = Calculator()
+
+        expected = 1
+        resulted = calc.add("1")
+
+        self.assertEquals(expected, resulted, "Adding one param Error")
+
+        expected = 2
+        resulted = calc.add("2")
+
+        self.assertEquals(expected, resulted, "Adding one param Error")
+
+        expected = 3
+        resulted = calc.add("3")
+
+        self.assertEquals(expected, resulted, "Adding one param Error")
+
+        pass
+
+    def testAddTwoParams(self):
+
+        calc = Calculator()
+
+        expected = 2
+        resulted = calc.add("1,1")
+
+        self.assertEquals(expected, resulted, "Adding two params Error")
+
+        expected = 3
+        resulted = calc.add("1,2")
+
+        self.assertEquals(expected, resulted, "Adding two params Error")
+
+        expected = 1
+        resulted = calc.add("0,1")
+
+        self.assertEquals(expected, resulted, "Adding two params Error")
+
+        expected = 5
+        resulted = calc.add("3,2")
+
+        self.assertEquals(expected, resulted, "Adding two params Error")
+
+        expected = 20
+        resulted = calc.add("10,10")
+
+        self.assertEquals(expected, resulted, "Adding two params Error")
+
+        pass
+
+    def testAddSomeParams(self):
+
+        calc = Calculator()
+
+        expected = 6
+        resulted = calc.add("1,2,3")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 12
+        resulted = calc.add("1,2,3,6")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 5
+        resulted = calc.add("1,1,3")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 30
+        resulted = calc.add("10,10,10")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        pass
+
+    def testAddSomeParamsWithNewLineSymbol(self):
+
+        calc = Calculator()
+
+        expected = 6
+        resulted = calc.add("1\\n2,3")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 12
+        resulted = calc.add("1,2\\n3,6")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 5
+        resulted = calc.add("1,1\\n3")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        expected = 30
+        resulted = calc.add("10\\n10\\n10")
+
+        self.assertEquals(expected, resulted, "Adding some params Error")
+
+        pass
+
+if __name__ == "__main__":
+    unittest.main()