//
// Encog(tm) Core v3.2 - .Net Version
// http://www.heatonresearch.com/encog/
//
// Copyright 2008-2014 Heaton Research, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//   
// For more information on Heaton Research copyrights, licenses 
// and trademarks visit:
// http://www.heatonresearch.com/copyright
//
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Encog.Engine.Network.Activation
{
    [TestClass]
    public class TestActivationLOG
    {
        [TestMethod]
        public void TestLog()
        {
            var activation = new ActivationLOG();
            Assert.IsTrue(activation.HasDerivative);

            var clone = (ActivationLOG) activation.Clone();
            Assert.IsNotNull(clone);

            double[] input = {0.0};

            activation.ActivationFunction(input, 0, 1);

            Assert.AreEqual(0.0, input[0], 0.1);

            // test derivative
            input[0] = activation.DerivativeFunction(input[0],input[0]);
            Assert.AreEqual(1.0, input[0], 0.1);
        }
    }
}
