refactor: convert decode history worker to TypeScript

2026-08-01 12:03:19 +02:00
parent 7442437757
commit a58553ba66
4 changed files with 285 additions and 183 deletions
@@ -0,0 +1,54 @@
+// SPDX-FileCopyrightText: 2026 Stan Grams <sjg@haxx.space>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import test from "node:test";
+import vm from "node:vm";
+
+test("decode-history worker decodes CBOR and batches messages", async () => {
+  const messages = [];
+  const worker = {
+    onmessage: null,
+    postMessage(message) { messages.push(message); },
+  };
+  const payload = Uint8Array.from([0xa1, 0x63, 0x61, 0x69, 0x73, 0x83, 0x01, 0x02, 0x03]);
+  const context = vm.createContext({
+    self: worker,
+    TextDecoder,
+    Uint8Array,
+    DataView,
+    ArrayBuffer,
+    Number,
+    Math,
+    String,
+    Error,
+    fetch: async () => ({
+      ok: true,
+      status: 200,
+      arrayBuffer: async () => payload.buffer,
+    }),
+  });
+  const source = await readFile(
+    new URL("../../assets/web/generated/decode-history-worker.js", import.meta.url),
+    "utf8",
+  );
+  new vm.Script(source).runInContext(context);
+  worker.onmessage({ data: { type: "fetch-history", url: "/decode/history", batchLimit: 2 } });
+  await new Promise((resolve) => { setTimeout(resolve, 0); });
+
+  assert.deepEqual(
+    messages.map(({ type, phase, total, processed }) => ({ type, phase, total, processed })),
+    [
+      { type: "status", phase: "fetching", total: undefined, processed: undefined },
+      { type: "status", phase: "decoding", total: undefined, processed: undefined },
+      { type: "start", phase: undefined, total: 3, processed: undefined },
+      { type: "group", phase: undefined, total: 3, processed: 2 },
+      { type: "group", phase: undefined, total: 3, processed: 3 },
+      { type: "done", phase: undefined, total: 3, processed: undefined },
+    ],
+  );
+  assert.deepEqual(Array.from(messages[3].messages), [1, 2]);
+  assert.deepEqual(Array.from(messages[4].messages), [3]);
+});