do not use sleep to wait for garbage collection

cherniavskii · cherniavskii · commit 387386d6320c · 2020-02-29T13:48:02.000+01:00
setTimeout is not reliable, so it's better to avoid it
diff --git a/src/tests/useQuery.test.js b/src/tests/useQuery.test.js
@@ -263,11 +263,8 @@ describe('useQuery', () => {
 
     expect(Object.keys(queryCache.queries).length).toEqual(5)
 
-    // wait for garbage collection
-    await sleep(0)
+    await waitForElement(() => rendered.getByText('todo aaaa'))
 
     expect(Object.keys(queryCache.queries).length).toEqual(1)
-
-    await waitForElement(() => rendered.getByText('todo aaaa'))
   })
 })
