Example #1
0
        public void CreateOrReplaceDictionary_DisallowsDuplicateKeys()
        {
            // Arrange
            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(Dictionary <string, int>))
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceDictionary(
                bindingContext,
                new[]
            {
                new KeyValuePair <string, int>("forty-two", 40),
                new KeyValuePair <string, int>("forty-two", 2),
                new KeyValuePair <string, int>("forty-two", 42)
            },
                () => new Dictionary <string, int>());

            // Assert
            IDictionary <string, int> newModel = bindingContext.Model as IDictionary <string, int>;

            Assert.Equal(new[] { "forty-two" }, newModel.Keys.ToArray());
            Assert.Equal(42, newModel["forty-two"]);
        }
Example #2
0
        public void CreateOrReplaceDictionary_OriginalModelNotDictionary_CreatesNewInstance()
        {
            // Arrange
            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(IDictionary <string, string>))
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceDictionary(
                bindingContext,
                new Dictionary <string, string>
            {
                { "horse", "Equidae" },
                { "bear", "Ursidae" }
            },
                () => new Dictionary <string, string>());

            // Assert
            IDictionary <string, string> newModel = bindingContext.Model as IDictionary <string, string>;

            Assert.Equal(new[] { "horse", "bear" }, newModel.Keys.ToArray());
            Assert.Equal("Equidae", newModel["horse"]);
            Assert.Equal("Ursidae", newModel["bear"]);
        }
Example #3
0
        public void CreateOrReplaceDictionary_OriginalModelImmutable_CreatesNewInstance()
        {
            // Arrange
            ReadOnlyDictionary <string, string> originalModel = new ReadOnlyDictionary <string, string>();

            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => originalModel, typeof(IDictionary <string, string>))
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceDictionary(
                bindingContext,
                new Dictionary <string, string>
            {
                { "Hello", "World" }
            },
                () => new Dictionary <string, string>());

            // Assert
            IDictionary <string, string> newModel = bindingContext.Model as IDictionary <string, string>;

            Assert.NotSame(originalModel, newModel);
            Assert.Equal(new[] { "Hello" }, newModel.Keys.ToArray());
            Assert.Equal("World", newModel["Hello"]);
        }
Example #4
0
        public void CreateOrReplaceDictionary_OriginalModelMutable_UpdatesOriginalInstance()
        {
            // Arrange
            Dictionary <string, string> originalInstance = new Dictionary <string, string>
            {
                { "dog", "Canidae" },
                { "cat", "Felidae" }
            };
            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => originalInstance, typeof(IDictionary <string, string>))
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceDictionary(
                bindingContext,
                new Dictionary <string, string>
            {
                { "horse", "Equidae" },
                { "bear", "Ursidae" }
            },
                () => new Dictionary <string, string>());

            // Assert
            Assert.Same(originalInstance, bindingContext.Model);
            Assert.Equal(new[] { "horse", "bear" }, originalInstance.Keys.ToArray());
            Assert.Equal("Equidae", originalInstance["horse"]);
            Assert.Equal("Ursidae", originalInstance["bear"]);
        }
        public void CreateOrReplaceCollection_OriginalModelMutable_UpdatesOriginalInstance()
        {
            // Arrange
            List <int> originalInstance = new List <int> {
                10, 20, 30
            };
            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(
                    () => originalInstance,
                    typeof(ICollection <int>)
                    )
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceCollection(
                bindingContext,
                new[] { 40, 50, 60 },
                () => new List <int>()
                );

            // Assert
            Assert.Same(originalInstance, bindingContext.Model);
            Assert.Equal(new[] { 40, 50, 60 }, originalInstance.ToArray());
        }
Example #6
0
        public void GetZeroBasedIndexes()
        {
            // Act
            string[] indexes = CollectionModelBinderUtil.GetZeroBasedIndexes().Take(5).ToArray();

            // Assert
            Assert.Equal(new[] { "0", "1", "2", "3", "4" }, indexes);
        }
Example #7
0
        public void GetIndexNamesFromValueProviderResult_ValueProviderResultIsNull_ReturnsNull()
        {
            // Act
            IEnumerable <string> indexNames = CollectionModelBinderUtil.GetIndexNamesFromValueProviderResult(null);

            // Assert
            Assert.Null(indexNames);
        }
Example #8
0
        public void GetIndexNamesFromValueProviderResult_ValueProviderResultReturnsEmptyArray_ReturnsNull()
        {
            // Arrange
            ValueProviderResult vpResult = new ValueProviderResult(new string[0], "", null);

            // Act
            IEnumerable <string> indexNames = CollectionModelBinderUtil.GetIndexNamesFromValueProviderResult(vpResult);

            // Assert
            Assert.Null(indexNames);
        }
Example #9
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ModelTypeWrongNumberOfGenericArguments_Fail()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(KeyValuePair <int, string>));

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(typeof(ICollection <>), null, modelMetadata);

            // Assert
            Assert.Null(typeArguments);
        }
Example #10
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ModelTypeOpenGeneric_Fail()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(IList <>));

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(null, null, modelMetadata);

            // Assert
            Assert.Null(typeArguments);
        }
Example #11
0
        public void GetIndexNamesFromValueProviderResult_ValueProviderResultReturnsNonEmptyArray_ReturnsArray()
        {
            // Arrange
            ValueProviderResult vpResult = new ValueProviderResult(new[] { "foo", "bar", "baz" }, "foo,bar,baz", null);

            // Act
            IEnumerable <string> indexNames = CollectionModelBinderUtil.GetIndexNamesFromValueProviderResult(vpResult);

            // Assert
            Assert.NotNull(indexNames);
            Assert.Equal(new[] { "foo", "bar", "baz" }, indexNames.ToArray());
        }
Example #12
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ReadWriteReference_NewInstanceNotAssignableToModelType_MutableInstance_Success()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => new Collection <int>(), typeof(Collection <int>));

            modelMetadata.IsReadOnly = false;

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(typeof(ICollection <>), typeof(List <>), modelMetadata);

            // Assert
            Assert.Equal(new[] { typeof(int) }, typeArguments);
        }
Example #13
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ReadOnlyReference_ModelIsNull_Fail()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(IList <int>));

            modelMetadata.IsReadOnly = true;

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(typeof(ICollection <>), typeof(List <>), modelMetadata);

            // Assert
            Assert.Null(typeArguments);
        }
Example #14
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ReadOnlyReference_ModelInstanceMutable_Valid()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => new List <int>(), typeof(IList <int>));

            modelMetadata.IsReadOnly = true;

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(typeof(IList <>), typeof(List <>), modelMetadata);

            // Assert
            Assert.Equal(new[] { typeof(int) }, typeArguments);
        }
Example #15
0
        public void GetTypeArgumentsForUpdatableGenericCollection_ReadOnlyReference_ModelInstanceOfWrongType_Fail()
        {
            // Arrange
            ModelMetadata modelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => new HashSet <int>(), typeof(ICollection <int>));

            modelMetadata.IsReadOnly = true;

            // Act
            Type[] typeArguments = CollectionModelBinderUtil.GetTypeArgumentsForUpdatableGenericCollection(typeof(IList <>), typeof(List <>), modelMetadata);

            // Assert
            // HashSet<> is not an IList<>, so we can't update
            Assert.Null(typeArguments);
        }
Example #16
0
        public void CreateOrReplaceCollection_OriginalModelNotCollection_CreatesNewInstance()
        {
            // Arrange
            ModelBindingContext bindingContext = new ModelBindingContext
            {
                ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(ICollection <int>))
            };

            // Act
            CollectionModelBinderUtil.CreateOrReplaceCollection(bindingContext, new[] { 10, 20, 30 }, () => new List <int>());

            // Assert
            int[] newModel = (bindingContext.Model as ICollection <int>).ToArray();
            Assert.Equal(new[] { 10, 20, 30 }, newModel);
        }