1 files changed, 27 insertions, 0 deletions
diff --git a/ts/bun/__tests__/gameOfLife.test.ts b/ts/bun/__tests__/gameOfLife.test.ts
new file mode 100644
index 0000000..1fef3de
--- /dev/null
+++ b/ts/bun/__tests__/gameOfLife.test.ts
@@ -0,0 +1,27 @@
+import { step, countNeighbors } from '../index';
+
+describe('Game of Life', () => {
+    test('countNeighbors counts the number of live neighbors', () => {
+        const grid = [
+            [false, true, false],
+            [false, true, false],
+            [false, true, false]
+        ];
+        expect(countNeighbors(grid, 1, 1)).toBe(2);
+        expect(countNeighbors(grid, 0, 0)).toBe(1);
+    });
+
+    test('step advances the game by one step', () => {
+        const initial = [
+            [false, true, false],
+            [false, true, false],
+            [false, true, false]
+        ];
+        const expected = [
+            [false, true, false],
+            [false, true, false],
+            [false, true, false]
+        ];
+        expect(step(initial)).toEqual(expected);
+    });
+});
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