[Init] Initial commit - NetMesh terminal manager

domain/systemManager/pollListStable.test.ts

@@ -0,0 +1,28 @@
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import test from "node:test";
+
+import { mergePollListByKey, nextPollData } from "./pollListStable.ts";
+
+test("nextPollData reuses previous reference when payload is unchanged", () => {
+  const prev = { a: 1 };
+  assert.equal(nextPollData(prev, { a: 1 }), prev);
+  assert.notEqual(nextPollData(prev, { a: 2 }), prev);
+});
+
+test("mergePollListByKey reuses unchanged row references", () => {
+  const prev = [{ id: "1", v: 1 }, { id: "2", v: 2 }];
+  const next = [{ id: "1", v: 1 }, { id: "2", v: 3 }];
+  const merged = mergePollListByKey(prev, next, (item) => item.id);
+  assert.equal(merged[0], prev[0]);
+  assert.deepEqual(merged[1], { id: "2", v: 3 });
+});
+
+test("useSystemManager imports nextPollData from domain", () => {
+  const source = readFileSync(
+    new URL("../../application/state/useSystemManager.ts", import.meta.url),
+    "utf8",
+  );
+  assert.match(source, /from ['"]\.\.\/\.\.\/domain\/systemManager\/pollListStable['"]/);
+  assert.doesNotMatch(source, /from ['"].*components\//);
+});