public void TagHelperDescriptorCache_TypeNameAffectsHash()
{
// Arrange
var expectedPropertyName = "PropertyName";
var intTagHelperBuilder = new DefaultTagHelperDescriptorBuilder(TagHelperConventions.DefaultKind, "TestTagHelper", "Test");
_ = intTagHelperBuilder.TypeName("TestTagHelper");
intTagHelperBuilder.BoundAttributeDescriptor(intBuilder =>
intBuilder
.Name("test")
.PropertyName(expectedPropertyName)
.TypeName(typeof(int).FullName)
);
var intTagHelper = intTagHelperBuilder.Build();
var stringTagHelperBuilder = new DefaultTagHelperDescriptorBuilder(TagHelperConventions.DefaultKind, "TestTagHelper", "Test");
_ = stringTagHelperBuilder.TypeName("TestTagHelper");
stringTagHelperBuilder.BoundAttributeDescriptor(stringBuilder =>
stringBuilder
.Name("test")
.PropertyName(expectedPropertyName)
.TypeName(typeof(string).FullName)
);
var stringTagHelper = stringTagHelperBuilder.Build();
// Act
TagHelperDescriptorCache.Set(intTagHelper.GetHashCode(), intTagHelper);
// Assert
Assert.False(TagHelperDescriptorCache.TryGetDescriptor(stringTagHelper.GetHashCode(), out var descriptor));
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader.TokenType != JsonToken.StartObject)
{
return(null);
}
// Try reading the optional hashcode
// Note; the JsonReader will read a numeric value as a Int64 (long) by default
var hashWasRead = reader.TryReadNextProperty <long>(RazorSerializationConstants.HashCodePropertyName, out var hashLong);
var hash = hashWasRead ? Convert.ToInt32(hashLong) : 0;
if (!DisableCachingForTesting &&
hashWasRead &&
TagHelperDescriptorCache.TryGetDescriptor(hash, out var descriptor))
{
ReadToEndOfCurrentObject(reader);
return(descriptor);
}
// Required tokens (order matters)
if (!reader.TryReadNextProperty <string>(nameof(TagHelperDescriptor.Kind), out var descriptorKind))
{
return(default);
