public async Task BindModel_CustomFormatter_ThrowingNonInputFormatterException_Throws()
{
// Arrange
var httpContext = new DefaultHttpContext();
httpContext.Request.Body = new MemoryStream(Encoding.UTF8.GetBytes("valid data"));
httpContext.Request.ContentType = "text/xyz";
var metadataProvider = new TestModelMetadataProvider();
metadataProvider.ForType <Person>().BindingDetails(d => d.BindingSource = BindingSource.Body);
var bindingContext = GetBindingContext(typeof(Person), httpContext, metadataProvider);
var formatter = new XyzFormatter((inputFormatterContext, encoding) =>
{
throw new IOException("Unable to read input stream!!");
});
var binder = CreateBinder(
new[] { formatter },
new MvcOptions()
{
InputFormatterExceptionModelStatePolicy = InputFormatterExceptionModelStatePolicy.MalformedInputExceptions
});
// Act
var exception = await Assert.ThrowsAsync <IOException>(
() => binder.BindModelAsync(bindingContext));
Assert.Equal("Unable to read input stream!!", exception.Message);
}
public async Task BindModel_CustomFormatter_ThrowingInputFormatterException_AddsErrorToModelState(
InputFormatterExceptionModelStatePolicy inputFormatterExceptionModelStatePolicy)
{
// Arrange
var httpContext = new DefaultHttpContext();
httpContext.Request.Body = new MemoryStream(Encoding.UTF8.GetBytes("Bad data!"));
httpContext.Request.ContentType = "text/xyz";
var metadataProvider = new TestModelMetadataProvider();
metadataProvider.ForType <Person>().BindingDetails(d => d.BindingSource = BindingSource.Body);
var expectedFormatException = new FormatException("bad format!");
var bindingContext = GetBindingContext(typeof(Person), httpContext, metadataProvider);
var formatter = new XyzFormatter((inputFormatterContext, encoding) =>
{
throw new InputFormatterException("Bad input!!", expectedFormatException);
});
var binder = CreateBinder(
new[] { formatter },
new MvcOptions()
{
InputFormatterExceptionModelStatePolicy = inputFormatterExceptionModelStatePolicy
});
// Act
await binder.BindModelAsync(bindingContext);
// Assert
Assert.False(bindingContext.Result.IsModelSet);
Assert.Null(bindingContext.Result.Model);
// Key is the empty string because this was a top-level binding.
var entry = Assert.Single(bindingContext.ModelState);
Assert.Equal(string.Empty, entry.Key);
var errorMessage = Assert.Single(entry.Value.Errors).Exception.Message;
Assert.Equal("Bad input!!", errorMessage);
var formatException = Assert.IsType <FormatException>(entry.Value.Errors[0].Exception.InnerException);
Assert.Same(expectedFormatException, formatException);
}
