public async Task ShouldBindDateTimeAsModel(string?year, string?month, bool isValid, string expectedDateString)
{
var formCollection = new FormCollection(new Dictionary <string, StringValues>()
{
{ "Month", month?.ToString() },
{ "Year", year?.ToString() },
});
var binder = new DateMonthYearModelBinder();
var vp = new FormValueProvider(BindingSource.Form, formCollection, CultureInfo.CurrentCulture);
var context = GetBindingContext(vp, typeof(string));
await binder.BindModelAsync(context);
context.ModelState.IsValid.Should().Be(isValid);
if (isValid)
{
var dateValueString = (string)context.Result.Model;
dateValueString.Should().Be(expectedDateString);
}
else
{
context.ModelState.ErrorCount.Should().Be(1);
}
}
public async Task ShouldNotBindIncompleteValueCollectionForDateTime_MissingYear()
{
var formCollection = new FormCollection(new Dictionary <string, StringValues>()
{
{ "Month", "12" },
});
var binder = new DateMonthYearModelBinder();
var vp = new FormValueProvider(BindingSource.Form, formCollection, CultureInfo.CurrentCulture);
var context = GetBindingContext(vp, typeof(string));
await binder.BindModelAsync(context);
context.Result.Model.Should().BeNull();
}