public void AsCollection()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
// Knowing that it's a collection means we have known behavior around
// the collection methods (like insert, add, clear, etc).
Assert.True(pb is Collection<Func<HttpParameterDescriptor, HttpParameterBinding>>);
}
public void Lookup_empty_collection_returns_null()
{
// The collection is empty, so lookup will fail.
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
HttpParameterDescriptor parameter = CreateParameterDescriptor(typeof(object), "none");
// Act
HttpParameterBinding binding = pb.LookupBinding(parameter);
// Assert.
Assert.Null(binding);
}
public void type_match_user_function_not_invoked_if_type_doesnt_match()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
HttpParameterBinding mockBinding = new EmptyParameterBinding();
pb.Add(typeof(string), param => { throw new InvalidOperationException("shouldn't be called"); });
pb.Insert(0, typeof(string), param => { throw new InvalidOperationException("shouldn't be called"); });
// Act
HttpParameterBinding b2 = pb.LookupBinding(CreateParameterDescriptor(typeof(int), "first"));
// Assert - made it through the action without throwing.
}
public void Add_with_type_match()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
HttpParameterBinding mockBinding = new EmptyParameterBinding();
pb.Add(typeof(string), param => mockBinding);
// Act
HttpParameterBinding b1 = pb.LookupBinding(CreateParameterDescriptor(typeof(string), "first"));
HttpParameterBinding b2 = pb.LookupBinding(CreateParameterDescriptor(typeof(int), "first"));
// Assert
Assert.Equal(mockBinding, b1);
Assert.Null(b2); // doesn't match type, misses.
}
public void Lookup_is_ordered()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
HttpParameterBinding mockBinding1 = new EmptyParameterBinding();
HttpParameterBinding mockBinding2 = new EmptyParameterBinding();
HttpParameterBinding mockBinding3 = new EmptyParameterBinding();
pb.Add(param => param.ParameterName == "first" ? mockBinding1 : null);
pb.Add(param => param.ParameterName == "first" ? mockBinding2 : null);
pb.Add(param => param.ParameterType == typeof(int) ? mockBinding3 : null);
// Act
HttpParameterBinding b1 = pb.LookupBinding(CreateParameterDescriptor(null, "first"));
HttpParameterBinding b2 = pb.LookupBinding(CreateParameterDescriptor(typeof(string), "none"));
HttpParameterBinding b3 = pb.LookupBinding(CreateParameterDescriptor(typeof(int), "first"));
HttpParameterBinding b4 = pb.LookupBinding(CreateParameterDescriptor(typeof(int), "last"));
// Assert
Assert.Equal(mockBinding1, b1);
Assert.Null(b2);
Assert.Equal(mockBinding1, b3);
Assert.Equal(mockBinding3, b4);
}
// Create an instance and add some default binders
internal static ParameterBindingRulesCollection GetDefaultParameterBinders()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
pb.Add(typeof(CancellationToken), parameter => new CancellationTokenParameterBinding(parameter));
pb.Add(typeof(HttpRequestMessage), parameter => new HttpRequestParameterBinding(parameter));
// Warning binder for HttpContent.
pb.Add(parameter => typeof(HttpContent).IsAssignableFrom(parameter.ParameterType) ?
parameter.BindAsError(Error.Format(SRResources.ParameterBindingIllegalType, parameter.ParameterType.Name, parameter.ParameterName))
: null);
return pb;
}
protected virtual void ConfigureParameterBindingRules(ParameterBindingRulesCollection parameterBindingRules)
{
}
public void Insert_with_type_match()
{
ParameterBindingRulesCollection pb = new ParameterBindingRulesCollection();
HttpParameterBinding mockBinding1 = new EmptyParameterBinding();
HttpParameterBinding mockBinding2 = new EmptyParameterBinding();
HttpParameterBinding mockBinding3 = new EmptyParameterBinding();
// Act, test insertion
pb.Add(typeof(string), param => mockBinding2);
pb.Add(typeof(int), param => mockBinding2);
pb.Insert(0, typeof(string), param => mockBinding1);
pb.Insert(2, typeof(int), param => mockBinding3); // goes in middle
// Assert via lookups
Assert.Equal(mockBinding1, pb.LookupBinding(CreateParameterDescriptor(typeof(string), "first")));
Assert.Equal(mockBinding3, pb.LookupBinding(CreateParameterDescriptor(typeof(int), "first")));
}
