[Init] Initial commit - NetMesh terminal manager

application/state/shellHistoryStore.test.ts

@@ -0,0 +1,29 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  getShellHistorySnapshot,
+  publishShellHistorySnapshot,
+  subscribeShellHistory,
+} from './shellHistoryStore.ts';
+
+test('shellHistoryStore notifies subscribers only when the snapshot identity changes', () => {
+  const events: number[] = [];
+  const unsubscribe = subscribeShellHistory(() => {
+    events.push(getShellHistorySnapshot().length);
+  });
+
+  const first = [{ id: '1', command: 'ls', hostId: 'h', hostLabel: 'h', sessionId: 's', timestamp: 1 }];
+  publishShellHistorySnapshot(first);
+  assert.equal(events.at(-1), 1);
+  assert.equal(getShellHistorySnapshot(), first);
+
+  publishShellHistorySnapshot(first);
+  assert.equal(events.length, 1);
+
+  const second = [...first, { id: '2', command: 'pwd', hostId: 'h', hostLabel: 'h', sessionId: 's', timestamp: 2 }];
+  publishShellHistorySnapshot(second);
+  assert.equal(events.at(-1), 2);
+
+  unsubscribe();
+});