Playground enhancements

playground/src/base64.test.ts

@@ -0,0 +1,14 @@
+import test from "node:test";
+import assert from "node:assert";
+import { b64decode, b64encode } from "./base64.ts";
+
+test("round trip", () => {
+  for (let s of ["", "a", "aa", "aaa", "aaaa", "aaaaa", "aaaaaa"]) {
+    let t = new TextEncoder().encode(s);
+    console.log(t, t + "");
+    let enc = b64encode(t);
+    assert.equal(enc.length, Math.ceil((t.length * 8) / 6));
+    assert.equal(b64decode(b64encode(t)) + "", t + "");
+    console.log("---");
+  }
+});