import { tractorBeam } from "./processCard";
import { expect } from "chai";
import "mocha";

describe("The tractorBeam function", () => {
	it("should move the ships closer", () => {
		let b = [
			null, "p1", null, null, "p2", null, null, "p3", null
		];
		let nb = [...b];
		tractorBeam(nb, 4, 1);

		expect(nb).to.have.length(9);

		expect(nb[0]).to.be.null;
		expect(nb[1]).to.be.null;
		expect(nb[2]).to.equal("p1");
		expect(nb[3]).to.be.null;
		expect(nb[4]).to.equal("p2");
		expect(nb[5]).to.be.null;
		expect(nb[6]).to.equal("p3");
		expect(nb[7]).to.be.null;
		expect(nb[8]).to.be.null;
	});
});