test(query-broadcast-client-experimental): added initial tests

Author: gopnik5

packages/query-broadcast-client-experimental/package.json

@@ -28,6 +28,8 @@
     "test:types:ts56": "node ../../node_modules/typescript56/lib/tsc.js --build",
     "test:types:ts57": "node ../../node_modules/typescript57/lib/tsc.js --build",
     "test:types:tscurrent": "tsc --build",
+    "test:lib": "vitest",
+    "test:lib:dev": "pnpm run test:lib --watch",
     "test:build": "publint --strict && attw --pack",
     "build": "tsup --tsconfig tsconfig.prod.json"
   },

packages/query-broadcast-client-experimental/src/index.test.ts

@@ -0,0 +1,21 @@
+import { QueryClient, QueryCache } from '@tanstack/query-core'
+import { describe, expect, it, beforeEach } from 'vitest'
+import { broadcastQueryClient } from '.'
+
+describe('broadcastQueryClient', () => {
+  let queryClient: QueryClient
+  let queryCache: QueryCache
+
+  beforeEach(() => {
+    queryClient = new QueryClient()
+    queryCache = queryClient.getQueryCache()
+  })
+
+  it('should subscribe to the query cache', async () => {
+    broadcastQueryClient({
+      queryClient,
+      broadcastChannel: 'test_channel',
+    })
+    expect(queryCache.hasListeners()).toBe(true)
+  })
+})