public void TestThrowsWhenFloatingNodeInSubcircuit()
{
builder.AddResistor(1, 0, 1);
builder.AddResistor(1, 2, 2);
builder.AddResistor(0, 2, 3);
builder.AddCurrentSource(1, 0, 5);
// add device 'far away'
builder.AddResistor(3, 4, 3);
// builder.BuildSubcircuit(new []{1,4});
Assert.Throws <NotConnectedSubcircuitException>(() => builder.BuildSubcircuit(new[] { 1, 4 }));
}