public async Task MissingOrInvalidComponents_FailsBinding(
string day,
string month,
string year,
string expectedDayModelError,
string expectedMonthModelError,
string expectedYearModelError)
{
// Arrange
var modelType = typeof(Date);
var valueProvider = new SimpleValueProvider();
if (day != null)
{
valueProvider.Add("TheModelName.Day", day);
}
if (month != null)
{
valueProvider.Add("TheModelName.Month", month);
}
if (year != null)
{
valueProvider.Add("TheModelName.Year", year);
}
ModelBindingContext bindingContext = new DefaultModelBindingContext()
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(modelType),
ModelName = "TheModelName",
ModelState = new ModelStateDictionary(),
ValueProvider = valueProvider
};
var modelBinder = new DateInputModelBinder();
// Act
await modelBinder.BindModelAsync(bindingContext);
// Assert
Assert.Equal(ModelBindingResult.Failed(), bindingContext.Result);
var topLevelError = Assert.Single(bindingContext.ModelState["TheModelName"].Errors);
Assert.Equal("Invalid date specified.", topLevelError.Exception.Message);
if (expectedDayModelError != null)
{
var dayError = Assert.Single(bindingContext.ModelState["TheModelName.Day"].Errors);
Assert.Equal(expectedDayModelError, dayError.Exception.Message);
}
if (expectedMonthModelError != null)
{
var monthError = Assert.Single(bindingContext.ModelState["TheModelName.Month"].Errors);
Assert.Equal(expectedMonthModelError, monthError.Exception.Message);
}
if (expectedYearModelError != null)
{
var yearError = Assert.Single(bindingContext.ModelState["TheModelName.Year"].Errors);
Assert.Equal(expectedYearModelError, yearError.Exception.Message);
}
Assert.Equal(day, bindingContext.ModelState["TheModelName.Day"].AttemptedValue);
Assert.Equal(month, bindingContext.ModelState["TheModelName.Month"].AttemptedValue);
Assert.Equal(year, bindingContext.ModelState["TheModelName.Year"].AttemptedValue);
}