From 9970036d203ba2d0a46b35ba6fad21d49441cdd4 Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <me@liz.coffee>
Date: Sun, 27 Jul 2025 17:03:10 -0700
Subject: hai

---
 tst/memoize.test.ts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 tst/memoize.test.ts

(limited to 'tst/memoize.test.ts')

diff --git a/tst/memoize.test.ts b/tst/memoize.test.ts
new file mode 100644
index 0000000..e3d9050
--- /dev/null
+++ b/tst/memoize.test.ts
@@ -0,0 +1,24 @@
+import { memoize } from '@emprespresso/pengueno';
+
+interface RefCounter {
+    inc(by: number): number;
+}
+
+test('memoizes', () => {
+    let _c = 0;
+    const c: RefCounter = {
+        inc(by: number): number {
+            _c += by;
+            return _c;
+        },
+    };
+
+    const incBy = memoize((n: number) => c.inc(n));
+
+    expect(incBy(1)).toBe(1);
+    expect(incBy(2)).toBe(3);
+    expect(incBy(20)).toBe(23);
+    expect(incBy(20)).toBe(23);
+    expect(incBy(1)).toBe(1);
+    expect(incBy(2)).toBe(3);
+});
-- 
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