// ------------------------------------------------------------
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//  Licensed under the MIT License (MIT). See LICENSE in the repo root for license information.
// ------------------------------------------------------------

using Microsoft.OData.Edm;
using Xunit;

namespace Microsoft.OpenApi.OData.Tests
{
    public class EdmModelExtensionsTest
    {
        [Fact]
        public void GetDescriptionReturnsNullForElementWithoutCoreDescription()
        {
            // Arrange
            IEdmModel model = EdmModelHelper.BasicEdmModel;
            IEdmSingleton me = model.EntityContainer.FindSingleton("Me");
            Assert.NotNull(me); // Guard

            // Act
            string description = model.GetDescriptionAnnotation(me);

            // Assert
            Assert.Null(description);
        }

        [Fact]
        public void GetDescriptionReturnsAnnotationForElementWithCoreDescription()
        {
            // Arrange
            IEdmModel model = EdmModelHelper.BasicEdmModel;
            IEdmEntitySet people = model.EntityContainer.FindEntitySet("People");
            Assert.NotNull(people); // Guard

            // Act
            string description = model.GetDescriptionAnnotation(people);

            // Assert
            Assert.Equal("People's description.", description);
        }

        [Fact]
        public void GetLongDescriptionReturnsAnnotationForElementWithCoreLongDescription()
        {
            // Arrange
            IEdmModel model = EdmModelHelper.BasicEdmModel;
            IEdmEntitySet people = model.EntityContainer.FindEntitySet("People");
            Assert.NotNull(people); // Guard

            // Act
            string description = model.GetLongDescriptionAnnotation(people);

            // Assert
            Assert.Equal("People's Long description.", description);
        }
    }
}