Merge branch 'main' into bug-2738

pmndrs · dai-shi · Oct 15, 2024 · Sep 19, 2024 · Sep 19, 2024 · Sep 19, 2024
commit b94deb964e9cabfc0b1e60f4b1f65bcb4cc7a032
diff --git a/tests/vanilla/dependency.test.tsx b/tests/vanilla/dependency.test.tsx
@@ -312,3 +312,25 @@ it('should not re-evaluate stable derived atom values in situations where depend
   expect(store.get(newAtom)).toBe(3)
   expect(callCounter).toHaveBeenCalledTimes(2)
 })
+
+it('handles complex dependency chains', async () => {
+  const baseAtom = atom(1)
+  const derived1 = atom((get) => get(baseAtom) * 2)
+  const derived2 = atom((get) => get(derived1) + 1)
+  let resolve = () => {}
+  const asyncDerived = atom(async (get) => {
+    const value = get(derived2)
+    await new Promise<void>((r) => (resolve = r))
+    return value * 2
+  })
+
+  const store = createStore()
+  const promise = store.get(asyncDerived)
+  resolve()
+  expect(await promise).toBe(6)
+
+  store.set(baseAtom, 2)
+  const promise2 = store.get(asyncDerived)
+  resolve()
+  expect(await promise2).toBe(10)
+})