Add math ops challenge

online_judges/math_ops/test_math_ops.py

@@ -0,0 +1,33 @@
+from nose.tools import assert_equal, assert_true, assert_raises
+
+
+class TestMathOps(object):
+
+    def test_math_ops(self):
+        solution = Solution()
+        assert_raises(TypeError, solution.insert, None)
+        solution.insert(5)
+        solution.insert(2)
+        solution.insert(7)
+        solution.insert(9)
+        solution.insert(9)
+        solution.insert(2)
+        solution.insert(9)
+        solution.insert(4)
+        solution.insert(3)
+        solution.insert(3)
+        solution.insert(2)
+        assert_equal(solution.max, 9)
+        assert_equal(solution.min, 2)
+        assert_equal(solution.mean, 5)
+        assert_true(solution.mode in (2, 92))
+        print('Success: test_math_ops')
+
+
+def main():
+    test = TestMathOps()
+    test.test_math_ops()
+
+
+if __name__ == '__main__':
+    main()