public async Task IHalFormatterSelected_DoesNotSerializeTest()
{
var halFormatter = new Mock <IHalFormatter>();
var outputFormatter = halFormatter.As <IOutputFormatter>();
var formatterSelector = FormatterSelector;
formatterSelector.Setup(f => f.SelectFormatter(
It.IsAny <OutputFormatterCanWriteContext>(),
It.IsAny <IList <IOutputFormatter> >(),
It.IsAny <MediaTypeCollection>()))
.Returns(outputFormatter.Object);
var inner = InnerExecutor.Object;
var executor = new HalObjectResultExecutor(
inner,
WriterFactory.Object,
formatterSelector.Object,
Logger);
var halFeature = new HalFeature();
var httpContext = HttpContext;
httpContext.Features.Set(halFeature);
var actionContext = new ActionContext
{
HttpContext = httpContext
};
var result = ObjectResult;
await executor.ExecuteAsync(actionContext, result);
Assert.AreSame(actionContext, halFeature.FormattingContext.Context);
Assert.AreSame(result, halFeature.FormattingContext.Result);
Assert.AreSame(inner, halFeature.FormattingContext.Executor);
}
public async Task Invoke(HttpContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.Features == null)
{
throw new ArgumentException("Features cannot be null.", nameof(context));
}
var halFeature = new HalFeature();
context.Features[typeof(HalFeature)] = halFeature;
await this.next(context);
if (halFeature.FormattingContext == null)
{
logger.LogDebug("Hal formatting context not found, other formatters are handling this response.");
return;
}
if (context.Response.HasStarted)
{
logger.LogWarning("Could not transform response into a HAL response, because the response has already started.");
return;
}
// Apparently we're dealing with a HAL response now.
// Invoke the resource factory.
var resourcePipelineInvoker = resourcePipeline.Create(new MvcPipeline(this.MvcPipeline));
ObjectResult result = halFeature.FormattingContext.Result;
if (resourcePipelineInvoker != null)
{
result = await resourcePipelineInvoker.InvokeAsync(halFeature.FormattingContext);
}
if (context.Response.HasStarted)
{
logger.LogWarning("Response had already started before executing the formatter. Skipping formatter.");
return;
}
// Now serialize the newly created resource.
// By executing the modified actionresult.
await halFeature.FormattingContext.Executor.ExecuteAsync(
halFeature.FormattingContext.Context,
result);
}