public void ShouldHandleSelectMany()
{
var lines = _query.SelectMany(o => o.Lines).ToList();
var dynLines = _query.SelectMany("o => o.Lines").Cast <OrderLine>().ToList();
Assert.Equal(lines, dynLines);
Assert.Throws <ArgumentNullException>(() => Dyn.SelectMany(null, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.SelectMany(_query, ""));
}
