Track HiveGrid Cloud planning reference

hivegrid-cloud/apps/web/app/shared-store.server.test.ts

@@ -0,0 +1,52 @@
+import { afterEach, describe, expect, test, vi } from "vitest";
+
+import { __resetSharedStoreForTests, __setSharedStoreFactoryForTests, getSharedStore } from "./shared-store.server";
+
+afterEach(() => {
+  __resetSharedStoreForTests();
+});
+
+describe("web shared-store singleton", () => {
+  test("memoizes the factory result", () => {
+    const factory = vi.fn(() => ({
+      namespace: "web",
+      ttlDefault: undefined,
+      adapter: {} as never,
+      key: (s: string) => s,
+      get: async () => null,
+      set: async () => true,
+      del: async () => 0,
+      incr: async () => 0,
+      expire: async () => true,
+      mget: async () => [],
+      scan: async function* () {},
+      publish: async () => 0,
+      subscribe: async () => async () => undefined,
+      zAdd: async () => 0,
+      zRemRangeByScore: async () => 0,
+      zCard: async () => 0,
+      eval: async () => null,
+      close: async () => undefined,
+    }));
+    __setSharedStoreFactoryForTests(factory);
+
+    const first = getSharedStore();
+    const second = getSharedStore();
+    expect(first).toBe(second);
+    expect(factory).toHaveBeenCalledTimes(1);
+  });
+
+  test("returns a memory-backed store when REDIS_URL is unset", async () => {
+    const originalRedisUrl = process.env.REDIS_URL;
+    delete process.env.REDIS_URL;
+    __resetSharedStoreForTests();
+    try {
+      const store = getSharedStore();
+      expect(store.namespace).toBe("web");
+      await store.set("ping", "pong");
+      expect(await store.get("ping")).toBe("pong");
+    } finally {
+      if (originalRedisUrl !== undefined) process.env.REDIS_URL = originalRedisUrl;
+    }
+  });
+});