/Silverlight4/Source/RiaClient.Tests/System.ComponentModel.DataAnnotations/AssociatedMetadataTypeTypeDescriptionProviderTest.cs

// (c) Copyright Microsoft Corporation.

// This source is subject to the Microsoft Public License (Ms-PL).

// Please see http://go.microsoft.com/fwlink/?LinkID=131993 for details.

// All other rights reserved.



#if !SILVERLIGHT

using System.Linq;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using Moq;



namespace System.ComponentModel.DataAnnotations.Test {

    [TestClass]

    public class AssociatedMetadataTypeTypeDescriptionProviderTest {



        [TestMethod]

        public void ConstructorAndGetTypeDescriptor() {

            AssociatedMetadataTypeTypeDescriptionProvider provider1 = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(TestTable));

            Assert.IsTrue(provider1.GetTypeDescriptor(typeof(TestTable)).GetProperties().Find("Number", true).Attributes.ContainsEquivalent(new RangeAttribute(0, 10)));



            AssociatedMetadataTypeTypeDescriptionProvider provider2 = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(TestTable), typeof(TestTable_MetadataAlternative));

            Assert.IsTrue(provider2.GetTypeDescriptor(typeof(TestTable)).GetProperties().Find("Number", true).Attributes.ContainsEquivalent(new RequiredAttribute()));

        }



        // Dev10 Bug 722118: Inheritance is broken with the AssociatedMetadataTypeTypeDescription provider

        [TestMethod]

        public void AddProviderToBaseType_GetPropertiesOfDerivedType() {

            // Before adding TDP

            var props = TypeDescriptor.GetProperties(typeof(Base)).Cast<PropertyDescriptor>().

                Select(p => p.Name).ToArray();

            CollectionAssert.AreEquivalent(new[] { "A", "B" }, props);



            props = TypeDescriptor.GetProperties(typeof(Derived)).Cast<PropertyDescriptor>().

                Select(p => p.Name).ToArray();

            CollectionAssert.AreEquivalent(new[] { "A", "B", "C" }, props);



            TypeDescriptionProvider provider = null;

            try {

                provider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(provider, typeof(Base));



                // After adding TDP

                props = TypeDescriptor.GetProperties(typeof(Base)).Cast<PropertyDescriptor>().

                    Select(p => p.Name).ToArray();

                CollectionAssert.AreEquivalent(new[] { "A", "B" }, props);



                props = TypeDescriptor.GetProperties(typeof(Derived)).Cast<PropertyDescriptor>().

                    Select(p => p.Name).ToArray();

                CollectionAssert.AreEquivalent(new[] { "A", "B", "C" }, props);

            }

            finally {

                // Ensure we remove the provider we attached.

                TypeDescriptor.RemoveProvider(provider, typeof(Base));

            }

        }



        [TestMethod]

        public void AddProviderToTypeAndInstance() {

            var instance = new Base();



            // Before adding TDPs

            var props = TypeDescriptor.GetProperties(instance).Cast<PropertyDescriptor>().

                Select(p => p.Name).ToArray();

            CollectionAssert.AreEquivalent(new[] { "A", "B" }, props);



            TypeDescriptionProvider typeProvider = null;

            TypeDescriptionProvider instanceProvider = null;

            try {

                typeProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(typeProvider, typeof(Base));



                instanceProvider = new TestTypeDescriptionProvider(instance);

                TypeDescriptor.AddProvider(instanceProvider, instance);



                // After adding TDPs

                props = TypeDescriptor.GetProperties(instance).Cast<PropertyDescriptor>().

                    Select(p => p.Name).ToArray();

                CollectionAssert.AreEquivalent(new[] { "A", "B", "CustomProperty1", "CustomProperty2" }, props);

            }

            finally {

                // Ensure we remove the providers we attached.

                TypeDescriptor.RemoveProvider(typeProvider, typeof(Base));

                TypeDescriptor.RemoveProvider(instanceProvider, instance);

            }

        }



        [TestMethod]

        public void AddMultipleProvidersToType() {

            // Before adding TDPs

            var props = TypeDescriptor.GetProperties(typeof(Base)).Cast<PropertyDescriptor>().

                Select(p => p.Name).ToArray();

            CollectionAssert.AreEquivalent(new[] { "A", "B" }, props);



            TypeDescriptionProvider associatedMetadataProvider = null;

            TypeDescriptionProvider testProvider = null;

            

            try {

                associatedMetadataProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(associatedMetadataProvider, typeof(Base));

                testProvider = new TestTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(testProvider, typeof(Base));



                // After adding TDPs

                props = TypeDescriptor.GetProperties(typeof(Base)).Cast<PropertyDescriptor>().

                    Select(p => p.Name).ToArray();

                CollectionAssert.AreEquivalent(new[] { "A", "B", "CustomProperty1", "CustomProperty2" }, props);

            }

            finally {

                // Ensure we remove the providers we attached.

                TypeDescriptor.RemoveProvider(associatedMetadataProvider, typeof(Base));

                TypeDescriptor.RemoveProvider(testProvider, typeof(Base));

            }



            // Add providers in reverse order

            try {

                testProvider = new TestTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(testProvider, typeof(Base));

                associatedMetadataProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(associatedMetadataProvider, typeof(Base));



                props = TypeDescriptor.GetProperties(typeof(Base)).Cast<PropertyDescriptor>().

                    Select(p => p.Name).ToArray();

                CollectionAssert.AreEquivalent(new[] { "A", "B", "CustomProperty1", "CustomProperty2" }, props);

            }

            finally {

                // Ensure we remove the providers we attached.

                TypeDescriptor.RemoveProvider(associatedMetadataProvider, typeof(Base));

                TypeDescriptor.RemoveProvider(testProvider, typeof(Base));

            }

        }



        [TestMethod]

        public void MetadataInheritance() {

            TypeDescriptionProvider baseProvider = null;

            TypeDescriptionProvider derivedProvider = null;

            TypeDescriptionProvider derivedNoMetadataProvider = null;

            try {

                baseProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Base));

                TypeDescriptor.AddProvider(baseProvider, typeof(Base));

                derivedProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Derived));

                TypeDescriptor.AddProvider(derivedProvider, typeof(Derived));

                derivedNoMetadataProvider = new AssociatedMetadataTypeTypeDescriptionProvider(typeof(DerivedNoMetadata));

                TypeDescriptor.AddProvider(derivedNoMetadataProvider, typeof(DerivedNoMetadata));



                var attrs = TypeDescriptor.GetProperties(typeof(Base))["A"].Attributes.Cast<Attribute>().

                    Select(a => a.GetType().Name).ToArray();

                CollectionAssert.IsSubsetOf(new[] { "DescriptionAttribute" }, attrs);



                attrs = TypeDescriptor.GetProperties(typeof(Derived))["A"].Attributes.Cast<Attribute>().

                    Select(a => a.GetType().Name).ToArray();

                CollectionAssert.IsSubsetOf(new[] { "DescriptionAttribute", "CategoryAttribute" }, attrs);



                attrs = TypeDescriptor.GetProperties(typeof(DerivedNoMetadata))["A"].Attributes.Cast<Attribute>().

                    Select(a => a.GetType().Name).ToArray();

                CollectionAssert.IsSubsetOf(new[] { "DescriptionAttribute" }, attrs);

            }

            finally {

                // Ensure we remove the providers we attached.

                TypeDescriptor.RemoveProvider(baseProvider, typeof(Base));

                TypeDescriptor.RemoveProvider(derivedProvider, typeof(Derived));

                TypeDescriptor.RemoveProvider(derivedNoMetadataProvider, typeof(DerivedNoMetadata));

            }

        }



        [MetadataType(typeof(BaseMetadata))]

        private class Base {

            public int A { get; set; }

            public int B { get; set; }

        }



        [MetadataType(typeof(DerivedMetadata))]

        private class Derived : Base {

            public int C { get; set; }

        }



        private class DerivedNoMetadata : Base {

            public int D { get; set; }

        }



        private class BaseMetadata {

            [Description("TestDescription")]

            public virtual int A { get; set; }

        }



        private class DerivedMetadata : BaseMetadata {

            [Category("TestCategory")]

            public override int A { get; set; }

        }



        [MetadataType(typeof(TestTable_Metadata))]

        class TestTable {

            public int Number { get; set; }

        }



        class TestTable_Metadata {

            [Range(0, 10)]

            public object Number { get; set; }

        }



        class TestTable_MetadataAlternative {

            [Required]

            public object Number { get; set; }

        }



        private class TestTypeDescriptionProvider : TypeDescriptionProvider {

            private TypeDescriptionProvider _baseProvider;



            public TestTypeDescriptionProvider(object instance) {

                _baseProvider = TypeDescriptor.GetProvider(instance);

            }



            public TestTypeDescriptionProvider(Type type) {

                _baseProvider = TypeDescriptor.GetProvider(type);

            }



            public override ICustomTypeDescriptor GetTypeDescriptor(Type objectType, object instance) {

                return new TestTypeDescriptor(_baseProvider.GetTypeDescriptor(objectType, instance));

            }



            private class TestTypeDescriptor : CustomTypeDescriptor {

                public TestTypeDescriptor(ICustomTypeDescriptor parent)

                    : base(parent) {

                }



                public override PropertyDescriptorCollection GetProperties() {

                    var baseProperties = base.GetProperties().Cast<PropertyDescriptor>();

                    var customProperties = new[] {

                        (new Mock<PropertyDescriptor>("CustomProperty1", null) { CallBase = true }).Object,

                        (new Mock<PropertyDescriptor>("CustomProperty2", null) { CallBase = true }).Object };

                    var allProperties = baseProperties.Concat(customProperties).ToArray();



                    return new PropertyDescriptorCollection(allProperties, true);

                }

            }

        }

    }

}

#endif