// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.

using System.Linq;
using System.Web.Mvc;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;

namespace Microsoft.Web.Mvc.ModelBinding.Test
{
    public class ComplexModelDtoTest
    {
        [Fact]
        public void ConstructorThrowsIfModelMetadataIsNull()
        {
            // Act & assert
            Assert.ThrowsArgumentNull(
                delegate { new ComplexModelDto(null, Enumerable.Empty<ModelMetadata>()); }, "modelMetadata");
        }

        [Fact]
        public void ConstructorThrowsIfPropertyMetadataIsNull()
        {
            // Arrange
            ModelMetadata modelMetadata = GetModelMetadata();

            // Act & assert
            Assert.ThrowsArgumentNull(
                delegate { new ComplexModelDto(modelMetadata, null); }, "propertyMetadata");
        }

        [Fact]
        public void ConstructorSetsProperties()
        {
            // Arrange
            ModelMetadata modelMetadata = GetModelMetadata();
            ModelMetadata[] propertyMetadata = new ModelMetadata[0];

            // Act
            ComplexModelDto dto = new ComplexModelDto(modelMetadata, propertyMetadata);

            // Assert
            Assert.Equal(modelMetadata, dto.ModelMetadata);
            Assert.Equal(propertyMetadata, dto.PropertyMetadata.ToArray());
            Assert.Empty(dto.Results);
        }

        private static ModelMetadata GetModelMetadata()
        {
            return new ModelMetadata(new EmptyModelMetadataProvider(), typeof(object), null, typeof(object), "PropertyName");
        }
    }
}