public void ShouldProperlyExecuteExceptionHandlers()
{
var storage = new GlobalExceptionBuilderStorage();
Func <ArgumentNullException, IActionResult> func = x => new ObjectResult(x.Message);
storage.ExceptionHandlers.Add(typeof(ArgumentNullException), func);
var filter = CreateFilter(storage);
var actionContext = new ActionContext
{
HttpContext = new DefaultHttpContext(),
RouteData = new Microsoft.AspNetCore.Routing.RouteData(),
ActionDescriptor = new Microsoft.AspNetCore.Mvc.Abstractions.ActionDescriptor()
};
var exceptionContext = new ExceptionContext(actionContext, new List <IFilterMetadata>()
{
filter
})
{
Exception = new ArgumentNullException("val", "argument is null")
};
Assert.Null(exceptionContext.Result);
filter.OnException(exceptionContext);
var result = exceptionContext.Result as ObjectResult;
Assert.NotNull(result);
Assert.Equal("argument is null (Parameter 'val')", (string)result.Value);
}
/// <summary>
/// Добавить глобальный обработчик исключений в MVC pipeline.
/// </summary>
public static IGlobalExceptionFilterBuilder AddGlobalExceptionFilter(this IServiceCollection services)
{
var storage = new GlobalExceptionBuilderStorage();
services.AddSingleton(storage);
return(new GlobalExceptionFilterBuilder(services, storage));
}
public GlobalExceptionFilter(ILoggerFactory?logger, GlobalExceptionBuilderStorage globalExceptionResult)
{
_globalExceptionResult = globalExceptionResult;
if (logger is null)
{
throw new ArgumentNullException(nameof(logger));
}
_logger = logger.CreateLogger <GlobalExceptionFilter>();
}
public void ShouldProperlyAddCustomExceptionFilters()
{
var storage = new GlobalExceptionBuilderStorage();
var builder = CreateBuilder(storage);
Assert.Equal(0, storage.ExceptionHandlers.Count);
builder.AddExceptionHandler <ArgumentNullException>(x => new ObjectResult(x.Message));
Assert.Equal(1, storage.ExceptionHandlers.Count);
}
public void ShouldProperlyAddDefaultExceptionFilters()
{
var storage = new GlobalExceptionBuilderStorage();
var builder = CreateBuilder(storage);
Assert.Equal(0, storage.ExceptionHandlers.Count);
builder.AddDefaultExceptionHandlers();
Assert.Equal(3, storage.ExceptionHandlers.Count);
}
GlobalExceptionFilterBuilder CreateBuilder(GlobalExceptionBuilderStorage builder) => new GlobalExceptionFilterBuilder(_services, builder);
GlobalExceptionFilter CreateFilter(GlobalExceptionBuilderStorage storage) => new GlobalExceptionFilter(new LoggerFactory(), storage);