relu-core/modules/rp/test/variable.js

Core for bot

var should = require("should");
var rp = require("../");
var checkRefs = require("./checkRefs");

describe("variable", function() {
	it("should be able to get and set primitive values", checkRefs(function() {
		var x = rp.variable("test");
		x().should.be.eql("test");
		x.set(123);
		x().should.be.eql(123);
		x.set(f);
		x().should.be.eql(f);
		x.isWritable().should.be.eql(true);
		function f() {}
	}));
	it("should be able to get object and arrays", checkRefs(function() {
		var O1 = {a: 1}, O2 = {b: 1};
		var A1 = [1, 2, 3], A2 = [];
		var x = rp.variable("test");
		x.set(O1);
		x().should.be.eql(O1);
		x.set(O2);
		x().should.be.eql(O2);
		x.set(A1);
		x().should.be.eql(A1);
		x.set(A2);
		x().should.be.eql(A2);
		x.set("test");
		x().should.be.eql("test");
	}));
	it("should fire correct events", checkRefs(function() {
		var x = rp.variable(1);
		var events = [];
		x.onChanged(function() {
			events.push("changed");
		});
		x.onUpdated(function(n, o) {
			events.push(["updated", n, o]);
		});
		x.onAdded(function(idx, i) {
			events.push(["added", idx, i]);
		});
		x.onRemoved(function(idx, i) {
			events.push(["removed", idx, i]);
		});
		x.set(2);
		events.shift().should.be.eql(["updated", 2, 1]);
		events.shift().should.be.eql("changed");
		rp.atomic(function() {
			x.set([3, 2, 1]);
			x.set([1, 2, 3]);
		});
		events.shift().should.be.eql(["updated", [1,2,3], 2]);
		events.shift().should.be.eql("changed");
		x.push(4);
		events.shift().should.be.eql(["added", 3, 4]);
		events.shift().should.be.eql("changed");
		x.shift();
		events.shift().should.be.eql(["removed", 0, 1]);
		events.shift().should.be.eql("changed");
	}));
	it("should fire correct array events", checkRefs(function() {
		var x = rp.variable([1,2,3]);
		var events = [];
		x.onChanged(function() {
			events.push("changed");
		});
		x.onUpdated(function(n, o) {
			events.push(["updated", n.slice(), o.slice()]);
		});
		x.onAdded(function(idx, i) {
			events.push(["added", idx, i]);
		});
		x.onRemoved(function(idx, i) {
			events.push(["removed", idx, i]);
		});
		x.push(4);
		events.shift().should.be.eql(["added", 3, 4]);
		events.shift().should.be.eql("changed");
		x.pop();
		events.shift().should.be.eql(["removed", 3, 4]);
		events.shift().should.be.eql("changed");
		rp.atomic(function() {
			x.set([0, 1, 2]);
			x.shift();
			x.push(4);
		});
		events.shift().should.be.eql(["updated", [1, 2, 4], [1, 2, 3]]);
		events.shift().should.be.eql("changed");
		rp.atomic(function() {
			x.unshift(0);
			x.unshift(-1);
			x.pop();
			x.push(3);
			x.push(4);
			// value should not change inside a atomic block
			x().should.be.eql([1, 2, 4]);
		});
		events.shift().should.be.eql(["removed", 2, 4]);
		events.shift().should.be.eql(["added", 0, -1]);
		events.shift().should.be.eql(["added", 1, 0]);
		events.shift().should.be.eql(["added", 4, 3]);
		events.shift().should.be.eql(["added", 5, 4]);
		events.shift().should.be.eql("changed");
	}));
});