time for a snapshot

workshop/steps/04-aabb/aabb.test.ts

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+import { expect, test } from "bun:test";
+import { type AABB, aabbOverlap, pointInAABB } from "./aabb.ts";
+
+const box: AABB = { x: 10, y: 10, w: 20, h: 20 }; // spans 10..30 in both axes
+
+test("point inside the box", () => {
+	expect(pointInAABB({ x: 15, y: 15 }, box)).toBe(true);
+});
+
+test("point outside the box", () => {
+	expect(pointInAABB({ x: 5, y: 15 }, box)).toBe(false);
+	expect(pointInAABB({ x: 15, y: 35 }, box)).toBe(false);
+});
+
+test("overlapping boxes", () => {
+	const other: AABB = { x: 20, y: 20, w: 20, h: 20 };
+	expect(aabbOverlap(box, other)).toBe(true);
+});
+
+test("separated on the x axis only -> no overlap", () => {
+	const other: AABB = { x: 40, y: 10, w: 5, h: 20 };
+	expect(aabbOverlap(box, other)).toBe(false);
+});
+
+test("separated on the y axis only -> no overlap", () => {
+	const other: AABB = { x: 10, y: 40, w: 20, h: 5 };
+	expect(aabbOverlap(box, other)).toBe(false);
+});