equipment-id-range-test.js

EquipmentIdRange = jook.eqp.EquipmentIdRange;
EquipmentParser = jook.eqp.EquipmentParser;

ExampleTest = TestCase("ExampleTest");

ExampleTest.prototype.testAdjacent_T1 = function() {
	var r1 = new EquipmentIdRange("BNSF",1,10);
	var r2 = new EquipmentIdRange("BNSF",11,12);
	var r3 = new EquipmentIdRange("BNSF", 20,21);
	assertTrue(r1.isAdjacentTo(r2));
	assertTrue(r2.isAdjacentTo(r1));
	assertFalse(r3.isAdjacentTo(r1));
	assertFalse(r1.isAdjacentTo(r3));
};

equipment-id-range.js

jook.eqp.EquipmentIdRange = function(init,from,to) {
	this.initial = init.toUpperCase();
	this.from = parseInt(from, 10);
	this.to = parseInt(to, 10);
	if (this.from > this.to) {
		var x = this.to;
		this.to = this.from;
		this.from = x;
	}
	this.isAdjacentTo = function(rng) {
		if (this.initial !== rng.initial) {
			return false;
		}
		return ((this.from-1)  === rng.to) || ((this.to+1) === rng.from);
	};
}