RomanConverter

calculator.py

+import unittest
+
+class Calculator:
+    def add(self, a, b):
+        return a + b
+
+class TestCalculator(unittest.TestCase):
+    def test_add(self):
+        c = Calculator()
+        self.assertEqual(c.add(2,3), 5)
+
+if __name__ == '__main__':
+    unittest.main()
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