public void ConditionalIndex_Compile_Val()
{
var px = Expression.Parameter(typeof(QuzX?));
var qx = new QuzX();
var ix = typeof(QuzX).GetProperty("Item");
var ax = CSharpExpression.Bind(ix.GetIndexParameters()[0], Expression.Constant(0));
var mx = CSharpExpression.ConditionalIndex(px, ix, ax);
var fx = Expression.Lambda <Func <QuzX?, int?> >(mx, px);
var dx = fx.Compile();
Assert.AreEqual(42, dx(qx));
Assert.IsNull(dx(null));
var pn = Expression.Parameter(typeof(QuzN?));
var qn = new QuzN();
var jn = typeof(QuzN).GetProperty("Item");
var an = CSharpExpression.Bind(jn.GetIndexParameters()[0], Expression.Constant(0));
var mn = CSharpExpression.ConditionalIndex(pn, jn, an);
var fn = Expression.Lambda <Func <QuzN?, int?> >(mn, pn);
var dn = fn.Compile();
Assert.AreEqual(42, dn(qn));
Assert.IsNull(dn(null));
var ps = Expression.Parameter(typeof(QuzS?));
var qs = new QuzS();
var js = typeof(QuzS).GetProperty("Item");
var bs = CSharpExpression.Bind(js.GetIndexParameters()[0], Expression.Constant(0));
var ms = CSharpExpression.ConditionalIndex(ps, js, bs);
var fs = Expression.Lambda <Func <QuzS?, string> >(ms, ps);
var ds = fs.Compile();
Assert.AreEqual("bar", ds(qs));
Assert.IsNull(ds(null));
}
public void ConditionalIndex_Compile_Val()
{
var px = Expression.Parameter(typeof(QuzX?));
var qx = new QuzX();
var ix = typeof(QuzX).GetProperty("Item");
var ax = CSharpExpression.Bind(ix.GetIndexParameters()[0], Expression.Constant(0));
var mx = CSharpExpression.ConditionalIndex(px, ix, ax);
var fx = Expression.Lambda<Func<QuzX?, int?>>(mx, px);
var dx = fx.Compile();
Assert.AreEqual(42, dx(qx));
Assert.IsNull(dx(null));
var pn = Expression.Parameter(typeof(QuzN?));
var qn = new QuzN();
var jn = typeof(QuzN).GetProperty("Item");
var an = CSharpExpression.Bind(jn.GetIndexParameters()[0], Expression.Constant(0));
var mn = CSharpExpression.ConditionalIndex(pn, jn, an);
var fn = Expression.Lambda<Func<QuzN?, int?>>(mn, pn);
var dn = fn.Compile();
Assert.AreEqual(42, dn(qn));
Assert.IsNull(dn(null));
var ps = Expression.Parameter(typeof(QuzS?));
var qs = new QuzS();
var js = typeof(QuzS).GetProperty("Item");
var bs = CSharpExpression.Bind(js.GetIndexParameters()[0], Expression.Constant(0));
var ms = CSharpExpression.ConditionalIndex(ps, js, bs);
var fs = Expression.Lambda<Func<QuzS?, string>>(ms, ps);
var ds = fs.Compile();
Assert.AreEqual("bar", ds(qs));
Assert.IsNull(ds(null));
}
