public async Task CompactRemovesNilValues()
{
var input = new ArrayValue(new FluidValue[] {
new StringValue("a"),
NumberValue.Zero,
NilValue.Instance,
new StringValue("b")
});
var arguments = new FilterArguments();
var context = new TemplateContext();
var result = await MiscFilters.Compact(input, arguments, context);
Assert.Equal(3, result.Enumerate().Count());
}