public async Task BindModel_SimpleCollection_Succeeds(bool isReadOnly)
{
// Arrange
var valueProvider = new SimpleValueProvider
{
{ "someName", new[] { "42", "100", "200" } }
};
var bindingContext = GetModelBindingContext(valueProvider, isReadOnly);
var modelState = bindingContext.ModelState;
var binder = new CollectionModelBinder <int>(CreateIntBinder());
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.True(bindingContext.Result.IsModelSet);
var list = Assert.IsAssignableFrom <IList <int> >(bindingContext.Result.Model);
Assert.Equal(new[] { 42, 100, 200 }, list.ToArray());
}
public async Task BindComplexCollectionFromIndexes_InfiniteIndexes()
{
// Arrange
var valueProvider = new SimpleValueProvider
{
{ "someName[0]", "42" },
{ "someName[1]", "100" },
{ "someName[3]", "400" }
};
var bindingContext = GetModelBindingContext(valueProvider);
var binder = new CollectionModelBinder <int>(CreateIntBinder());
// Act
var boundCollection = await binder.BindComplexCollectionFromIndexes(bindingContext, indexNames : null);
// Assert
Assert.Equal(new[] { 42, 100 }, boundCollection.Model.ToArray());
// This uses the default IValidationStrategy
Assert.DoesNotContain(boundCollection, bindingContext.ValidationState.Keys);
}
public async Task CollectionModelBinder_CreatesEmptyCollectionAndAddsError_IfIsTopLevelObject()
{
// Arrange
var binder = new CollectionModelBinder <string>(
new StubModelBinder(result: ModelBindingResult.Failed()),
NullLoggerFactory.Instance,
allowValidatingTopLevelNodes: true);
var bindingContext = CreateContext();
bindingContext.IsTopLevelObject = true;
bindingContext.FieldName = "fieldName";
bindingContext.ModelName = "modelName";
var metadataProvider = new TestModelMetadataProvider();
var parameter = typeof(CollectionModelBinderTest)
.GetMethod(nameof(ActionWithListParameter), BindingFlags.Instance | BindingFlags.NonPublic)
.GetParameters()[0];
metadataProvider
.ForParameter(parameter)
.BindingDetails(b => b.IsBindingRequired = true);
bindingContext.ModelMetadata = metadataProvider.GetMetadataForParameter(parameter);
bindingContext.ValueProvider = new TestValueProvider(new Dictionary <string, object>());
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.Empty(Assert.IsType <List <string> >(bindingContext.Result.Model));
Assert.True(bindingContext.Result.IsModelSet);
var keyValuePair = Assert.Single(bindingContext.ModelState);
Assert.Equal("modelName", keyValuePair.Key);
var error = Assert.Single(keyValuePair.Value.Errors);
Assert.Equal("A value for the 'fieldName' parameter or property was not provided.", error.ErrorMessage);
}
public async Task BindSimpleCollection_SubBindingSucceeds()
{
// Arrange
var culture = new CultureInfo("fr-FR");
var bindingContext = GetModelBindingContext(new SimpleValueProvider());
var elementBinder = new StubModelBinder(mbc =>
{
Assert.Equal("someName", mbc.ModelName);
mbc.Result = ModelBindingResult.Success(42);
});
var modelBinder = new CollectionModelBinder <int>(elementBinder, NullLoggerFactory.Instance);
// Act
var boundCollection = await modelBinder.BindSimpleCollection(
bindingContext,
new ValueProviderResult(new string[] { "0" }));
// Assert
Assert.Equal(new[] { 42 }, boundCollection.Model.ToArray());
}
public async Task BindModelAsync_SimpleCollectionWithNullValue_Succeeds()
{
// Arrange
var binder = new CollectionModelBinder <int>(CreateIntBinder());
var valueProvider = new SimpleValueProvider
{
{ "someName", null },
};
var bindingContext = GetModelBindingContext(valueProvider, isReadOnly: false);
// Act
var result = await binder.BindModelResultAsync(bindingContext);
// Assert
Assert.NotEqual(default(ModelBindingResult), result);
Assert.True(result.IsModelSet);
Assert.NotNull(result.Model);
var model = Assert.IsType <List <int> >(result.Model);
Assert.Empty(model);
}
public async Task BindModel_SimpleCollection_BindingContextModelNonNull_Succeeds(bool isReadOnly)
{
// Arrange
var valueProvider = new SimpleValueProvider
{
{ "someName", new[] { "42", "100", "200" } }
};
var bindingContext = GetModelBindingContext(valueProvider, isReadOnly);
var modelState = bindingContext.ModelState;
var list = new List <int>();
bindingContext.Model = list;
var binder = new CollectionModelBinder <int>(CreateIntBinder(), NullLoggerFactory.Instance);
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.True(bindingContext.Result.IsModelSet);
Assert.Same(list, bindingContext.Result.Model);
Assert.Equal(new[] { 42, 100, 200 }, list.ToArray());
}
public async Task CollectionModelBinder_DoesNotCreateCollection_IfNotIsTopLevelObject(string prefix)
{
// Arrange
var binder = new CollectionModelBinder <string>(new StubModelBinder(result: ModelBindingResult.Failed()));
var bindingContext = CreateContext();
bindingContext.ModelName = ModelNames.CreatePropertyModelName(prefix, "ListProperty");
var metadataProvider = new TestModelMetadataProvider();
bindingContext.ModelMetadata = metadataProvider.GetMetadataForProperty(
typeof(ModelWithListProperty),
nameof(ModelWithListProperty.ListProperty));
bindingContext.ValueProvider = new TestValueProvider(new Dictionary <string, object>());
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.False(bindingContext.Result.IsModelSet);
}
public async Task CollectionModelBinder_DoesNotCreateCollection_IfNotIsTopLevelObject(string prefix)
{
// Arrange
var binder = new CollectionModelBinder <string>(new StubModelBinder(result: null));
var context = CreateContext();
context.ModelName = ModelNames.CreatePropertyModelName(prefix, "ListProperty");
var metadataProvider = new TestModelMetadataProvider();
context.ModelMetadata = metadataProvider.GetMetadataForProperty(
typeof(ModelWithListProperty),
nameof(ModelWithListProperty.ListProperty));
context.ValueProvider = new TestValueProvider(new Dictionary <string, object>());
// Act
var result = await binder.BindModelResultAsync(context);
// Assert
Assert.Equal(default(ModelBindingResult), result);
}
public async Task CollectionModelBinder_CreatesEmptyCollection_IfIsTopLevelObject(
bool allowValidatingTopLevelNodes,
bool isBindingRequired)
{
// Arrange
var binder = new CollectionModelBinder <string>(
new StubModelBinder(result: ModelBindingResult.Failed()),
NullLoggerFactory.Instance,
allowValidatingTopLevelNodes);
var bindingContext = CreateContext();
bindingContext.IsTopLevelObject = true;
// Lack of prefix and non-empty model name both ignored.
bindingContext.ModelName = "modelName";
var metadataProvider = new TestModelMetadataProvider();
var parameter = typeof(CollectionModelBinderTest)
.GetMethod(nameof(ActionWithListParameter), BindingFlags.Instance | BindingFlags.NonPublic)
.GetParameters()[0];
metadataProvider
.ForParameter(parameter)
.BindingDetails(b => b.IsBindingRequired = isBindingRequired);
bindingContext.ModelMetadata = metadataProvider.GetMetadataForParameter(parameter);
bindingContext.ValueProvider = new TestValueProvider(new Dictionary <string, object>());
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.Empty(Assert.IsType <List <string> >(bindingContext.Result.Model));
Assert.True(bindingContext.Result.IsModelSet);
Assert.Equal(0, bindingContext.ModelState.ErrorCount);
}
public async Task BindComplexCollectionFromIndexes_FiniteIndexes()
{
// Arrange
var valueProvider = new SimpleValueProvider
{
{ "someName[foo]", "42" },
{ "someName[baz]", "200" }
};
var bindingContext = GetModelBindingContext(valueProvider);
var binder = new CollectionModelBinder <int>(CreateIntBinder(), NullLoggerFactory.Instance);
// Act
var collectionResult = await binder.BindComplexCollectionFromIndexes(
bindingContext,
new[] { "foo", "bar", "baz" });
// Assert
Assert.Equal(new[] { 42, 0, 200 }, collectionResult.Model.ToArray());
// This requires a non-default IValidationStrategy
var strategy = Assert.IsType <ExplicitIndexCollectionValidationStrategy>(collectionResult.ValidationStrategy);
Assert.Equal(new[] { "foo", "bar", "baz" }, strategy.ElementKeys);
}