public void ExecuteWithBoundFirstArg()
{
double cntA = 1;
int cntB = 1;
var task = new VariableArgumentTask<double, int> (1, (a, b) => { cntA += a; cntB += b.Length; });
task [0] = new PortElement <double> (4);
task [1] = new PortElement <int> (2);
Assert.IsNull (task.Execute (), "#1");
Assert.AreEqual (5, cntA, "#2");
Assert.AreEqual (2, cntB, "#3");
}