// Copyright (C) Stichting Deltares 2017. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.Collections.Generic;
using System.Linq;
using Core.Common.Base;
using NUnit.Framework;
using Ringtoets.Common.Data.AssessmentSection;
using Ringtoets.Common.Data.Contribution;
using Ringtoets.Common.Data.FailureMechanism;

namespace Ringtoets.Common.Data.TestUtil.Test
{
    [TestFixture]
    public class ObservableTestAssessmentSectionStubTest
    {
        [Test]
        public void Constructor_ExpectedValues()
        {
            // Call
            var assessmentSection = new ObservableTestAssessmentSectionStub();

            // Assert
            Assert.IsInstanceOf<IAssessmentSection>(assessmentSection);
            Assert.IsInstanceOf<Observable>(assessmentSection);

            Assert.IsNull(assessmentSection.Id);
            Assert.IsNull(assessmentSection.Name);
            Assert.IsNull(assessmentSection.Comments);
            Assert.AreEqual(0, Convert.ToInt32(assessmentSection.Composition));
            Assert.IsNull(assessmentSection.ReferenceLine);
            Assert.IsNull(assessmentSection.HydraulicBoundaryDatabase);
            Assert.IsNotNull(assessmentSection.BackgroundData);
            Assert.AreEqual("Background data", assessmentSection.BackgroundData.Name);

            Assert.AreEqual(1.0 / 30000, assessmentSection.FailureMechanismContribution.Norm);
            Assert.AreEqual(1.0 / 30000, assessmentSection.FailureMechanismContribution.SignalingNorm);
            Assert.AreEqual(1.0 / 30000, assessmentSection.FailureMechanismContribution.LowerLimitNorm);
            FailureMechanismContributionItem[] contributionItems = assessmentSection.FailureMechanismContribution.Distribution.ToArray();
            Assert.AreEqual(1, contributionItems.Length);
            Assert.AreEqual(0, contributionItems[0].Contribution);
            Assert.IsInstanceOf<OtherFailureMechanism>(contributionItems[0].FailureMechanism);
        }

        [Test]
        public void GetFailureMechanisms_Always_ReturnEmpty()
        {
            // Setup
            var assessmentSection = new ObservableTestAssessmentSectionStub();

            // Call
            IEnumerable<IFailureMechanism> failureMechanism = assessmentSection.GetFailureMechanisms();

            // Assert
            CollectionAssert.IsEmpty(failureMechanism);
        }

        [Test]
        public void ChangeComposition_Call_ThrowsNotImplementedException()
        {
            // Setup
            var assessmentSection = new ObservableTestAssessmentSectionStub();

            // Call
            TestDelegate call = () => assessmentSection.ChangeComposition(AssessmentSectionComposition.Dike);

            // Assert
            string message = Assert.Throws<NotImplementedException>(call).Message;
            const string expectedMessage = "Stub only verifies Observable and basic behaviour, use a proper stub when this function is necessary.";
            Assert.AreEqual(expectedMessage, message);
        }
    }
}