added test for fraction reduction as well as corresponding functionality

src/main/py/fractions.py

@@ -1,2 +1,10 @@
+from src.main.py.more_advanced_calculations import gcd
+
 def frac_to_dec(num, denom):
     return num/denom
+
+def reduceFraction(num, denom):
+    gcdOfFraction = gcd(num, denom)
+    num /= gcdOfFraction
+    denom /= gcdOfFraction
+    return (num, denom)

src/test/py/test_fractions.py

@@ -15,6 +15,9 @@ class fractions(unittest.TestCase):
     def test_dec_value_of_negative_20_by_5_should_be_negative_4(self):
         self.assertEqual(frac_to_dec(-20,5), -4)
 
+    def test_reduce_fraction_56_by_32_should_be_7_by_4(self):
+        self.assertEqual(reduceFraction(56,32), (7,4))
+
 
 if __name__ == '__main__':
     unittest.main()