fix(scheduler): handle preFlush cb queued inside postFlush cb

fix #3806
2021-05-26 14:21:49 -04:00
parent e8ddf86080
commit b57e995edd
2 changed files with 15 additions and 1 deletions
--- a/packages/runtime-core/tests/scheduler.spec.ts
+++ b/packages/runtime-core/tests/scheduler.spec.ts
@@ -230,6 +230,16 @@ describe('scheduler', () => {
      await nextTick()
      expect(calls).toEqual(['cb1', 'cb2', 'job1'])
    })
+
+    // #3806
+    it('queue preFlushCb inside postFlushCb', async () => {
+      const cb = jest.fn()
+      queuePostFlushCb(() => {
+        queuePreFlushCb(cb)
+      })
+      await nextTick()
+      expect(cb).toHaveBeenCalled()
+    })
  })

  describe('queuePostFlushCb', () => {