public void Filter_ReturnsNull()
{
// Arrange
var allRewrite = new[] { GetValueProvider(rewritesKeys: true), GetValueProvider(rewritesKeys: true) };
var provider = new CompositeValueProvider(allRewrite);
// Act
var result = provider.Filter();
// Assert
Assert.Null(result);
}
public void Filter_ReturnsProvider(CompositeValueProvider provider)
{
// Arrange
var originalProviders = provider.ToArray();
// Act
var result = provider.Filter();
// Assert (does not change inner providers)
var newProvider = Assert.IsType <CompositeValueProvider>(result);
Assert.Equal(originalProviders, newProvider, ReferenceEqualityComparer.Instance);
}
public void FilterReturnsItself_ForAnyClassRegisteredAsGenericParam(IBindingSourceMetadata metadata)
{
// Arrange
var values = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
var valueProvider1 = GetMockValueProvider("Test");
var valueProvider2 = GetMockValueProvider("Unrelated");
var provider = new CompositeValueProvider() { valueProvider1.Object, valueProvider2.Object };
// Act
var result = provider.Filter(metadata.BindingSource);
// Assert
var valueProvider = Assert.IsType<CompositeValueProvider>(result);
var filteredProvider = Assert.Single(valueProvider);
// should not be unrelated metadata.
Assert.Same(valueProvider1.Object, filteredProvider);
}
public void FilterReturnsItself_ForAnyClassRegisteredAsGenericParam(IValueProviderMetadata metadata)
{
// Arrange
var values = new Dictionary <string, object>(StringComparer.OrdinalIgnoreCase);
var unrelatedMetadata = new UnrelatedValueBinderMetadata();
var valueProvider1 = GetMockValueProvider(metadata);
var valueProvider2 = GetMockValueProvider(unrelatedMetadata);
var provider = new CompositeValueProvider(new List <IValueProvider>()
{
valueProvider1.Object, valueProvider2.Object
});
// Act
var result = provider.Filter(metadata);
// Assert
var valueProvider = Assert.IsType <CompositeValueProvider>(result);
var filteredProvider = Assert.Single(valueProvider);
// should not be unrelated metadata.
Assert.Same(valueProvider1.Object, filteredProvider);
}
public void Filter_RemovesThoseThatRewrite()
{
// Arrange
var doesNotRewrite1 = GetValueProvider(rewritesKeys: false);
var doesNotRewrite2 = GetValueProvider(rewritesKeys: false);
var doesNotImplement1 = GetMockValueProvider("One").Object;
var doesNotImplement2 = GetMockValueProvider("Two").Object;
var rewrites1 = GetValueProvider(rewritesKeys: true);
var rewrites2 = GetValueProvider(rewritesKeys: true);
var providers = new IValueProvider[]
{
doesNotRewrite1,
doesNotImplement1,
rewrites1,
doesNotRewrite2,
doesNotImplement2,
rewrites2,
};
var expectedProviders = new IValueProvider[]
{
doesNotRewrite1,
doesNotImplement1,
doesNotRewrite2,
doesNotImplement2,
};
var provider = new CompositeValueProvider(providers);
// Act
var result = provider.Filter();
// Assert
Assert.NotSame(provider, result);
var newProvider = Assert.IsType <CompositeValueProvider>(result);
Assert.Equal(expectedProviders, newProvider, ReferenceEqualityComparer.Instance);
}