Complete OpenScript runtime roadmap

tests/storage.test.js

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+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  garbageCollectScriptStorage, runScriptStorageOperation,
+} from '../src/utils/storage.js';
+
+const mockChromeStorage = initial => {
+  const data = structuredClone(initial);
+  globalThis.chrome = { storage: { local: {
+    get: async key => key === null ? { ...data } : Object.hasOwn(data, key) ? { [key]: data[key] } : {},
+    set: async values => Object.assign(data, values),
+    remove: async keys => [keys].flat().forEach(key => delete data[key]),
+  } } };
+  return data;
+};
+
+test('script storage isolates, lists, and deletes values by script ID', async () => {
+  const data = mockChromeStorage({
+    scripts: [
+      { id: 'script_a', storageToken: 'token-a' },
+      { id: 'script_b', storageToken: 'token-b' },
+    ],
+    storage_script_b_shared: 'private-b',
+  });
+
+  await runScriptStorageOperation('token-a', 'set', 'shared', { count: 1 });
+  assert.deepEqual(data.storage_script_a_shared, { count: 1 });
+  assert.deepEqual(await runScriptStorageOperation('token-a', 'get', 'shared'), {
+    found: true, value: { count: 1 },
+  });
+  assert.deepEqual(await runScriptStorageOperation('token-a', 'get', 'missing'), {
+    found: false, value: undefined,
+  });
+  assert.deepEqual(await runScriptStorageOperation('token-a', 'list'), { keys: ['shared'] });
+  await runScriptStorageOperation('token-a', 'delete', 'shared');
+  assert.equal(data.storage_script_a_shared, undefined);
+  await assert.rejects(() => runScriptStorageOperation('token-bad', 'list'), /Invalid script storage token/);
+});
+
+test('script storage garbage collection removes only orphaned script keys', async () => {
+  const data = mockChromeStorage({
+    scripts: [{ id: 'script_a' }],
+    storage_script_a_keep: 1,
+    storage_script_deleted_remove: 2,
+    unrelated: 3,
+  });
+  const removed = await garbageCollectScriptStorage(['script_a']);
+  assert.deepEqual(removed, ['storage_script_deleted_remove']);
+  assert.equal(data.storage_script_a_keep, 1);
+  assert.equal(data.storage_script_deleted_remove, undefined);
+  assert.equal(data.unrelated, 3);
+});