Create bowling_game.test.js

javascript_bun/bowling_game/bowling_game.test.js

@@ -0,0 +1,47 @@
+import { describe, beforeEach, expect, test } from "bun:test";
+import { BowlingGame } from "./bowling_game";
+
+describe("Bowling Game", () => {
+  let bg;
+
+  beforeEach(() => {
+    bg = new BowlingGame();
+  });
+
+  function rollMany(game, times, pins) {
+    for (let i = 0; i < times; i++) {
+      game.roll(pins);
+    }
+  }
+
+  test("All zeros game", () => {
+    rollMany(bg, 20, 0)
+    expect(bg.score()).toBe(0);
+  });
+
+  test("All one game", () => {
+    rollMany(bg, 20, 1)
+    expect(bg.score()).toBe(20);
+  });
+
+  test("One spare game", () => {
+    bg.roll(5)
+    bg.roll(5)
+    bg.roll(3)
+    rollMany(bg, 17, 0)
+    expect(bg.score()).toBe(16);
+  });
+
+  test("One strike game", () => {
+    bg.roll(10)
+    bg.roll(3)
+    bg.roll(4)
+    rollMany(bg, 16, 0)
+    expect(bg.score()).toBe(24);
+  });
+
+  test("Perfect game", () => {
+    rollMany(bg, 12, 10)
+    expect(bg.score()).toBe(300);
+  });
+});