import { describe, expect, it } from "vitest";

import Entity from "../entity";

describe("Entity", () => {
	it("should initialize", () => {
		const entity = new Entity();

		expect(typeof entity.id).toBe("number");
	});

	it("should have an unique id", () => {
		const entity1 = new Entity();
		const entity2 = new Entity();

		expect(entity1.id !== entity2.id).toBeTruthy();
	});

	it("should support getDefault components", () => {
		const entity = new Entity(0, { identity: { name: "bar" } });

		expect(entity.components.identity?.name).toEqual("bar");
	});

	it("should support default data", () => {
		const entity = new Entity(null, {
			identity: {
				name: "Testing!",
				description: "This is a test.",
			},
		});
		expect(entity.components.identity).toEqual({
			name: "Testing!",
			description: "This is a test.",
		});
	});

	describe("addComponent()", () => {
		it("should add a default object when a component name is passed", () => {
			const entity = new Entity();
			expect(entity.components.identity).toEqual(undefined);
			entity.addComponent("identity");
			expect(entity.components.identity?.name).toEqual("Entity");
			expect(entity.components.identity?.description).toBeUndefined();
		});
	});

	describe("updateComponent()", () => {
		it("should update an existing component", () => {
			const entity = new Entity();
			entity.addComponent("identity", { name: "bar" });

			expect(entity.components.identity?.name).toEqual("bar");

			entity.updateComponent("identity", { name: "foo" });

			expect(entity.components.identity?.name).toEqual("foo");
		});
	});
});