Renamed coinchange to coin_change.

recursion_dynamic/coin_change_ways/test_coin_change_ways.py

@@ -0,0 +1,19 @@
+from nose.tools import assert_equal
+
+
+class Challenge(object):
+
+    def test_coin_change_ways(self,solution):
+        assert_equal(solution(0, [1, 2]), 0)
+        assert_equal(solution(100, [1, 2, 3]), 884)
+        assert_equal(solution(1000, range(1, 101)), 15658181104580771094597751280645)
+        print('Success: test_coin_change_ways')
+
+
+def main():
+    test = Challenge()
+    test.test_coin_change_ways(change_ways)
+
+
+if __name__ == '__main__':
+    main()