.

Author: mdjastrzebski

src/__tests__/suspense-fake-timers.test.tsx

@@ -12,6 +12,31 @@ function Suspending({ promise }: { promise: Promise<unknown> }) {
   return <View testID="content" />;
 }
 
+testGateReact19('resolves manually-controlled promise', async () => {
+  let resolvePromise: (value: unknown) => void;
+  const promise = new Promise((resolve) => {
+    resolvePromise = resolve;
+  });
+
+  await renderAsync(
+    <View>
+      <React.Suspense fallback={<Text>Loading...</Text>}>
+        <Suspending promise={promise} />
+        <View testID="sibling" />
+      </React.Suspense>
+    </View>,
+  );
+  expect(screen.getByText('Loading...')).toBeOnTheScreen();
+  expect(screen.queryByTestId('content')).not.toBeOnTheScreen();
+  expect(screen.queryByTestId('sibling')).not.toBeOnTheScreen();
+
+  // eslint-disable-next-line require-await
+  await act(async () => resolvePromise(null));
+  expect(screen.getByTestId('content')).toBeOnTheScreen();
+  expect(screen.getByTestId('sibling')).toBeOnTheScreen();
+  expect(screen.queryByText('Loading...')).not.toBeOnTheScreen();
+});
+
 testGateReact19('resolves timer-controlled promise', async () => {
   const promise = new Promise((resolve) => {
     setTimeout(() => resolve(null), 100);

src/__tests__/suspense.test.tsx

@@ -11,7 +11,7 @@ function Suspending({ promise }: { promise: Promise<unknown> }) {
 }
 
 testGateReact19('resolves manually-controlled promise', async () => {
-  let resolvePromise: (value: void) => void;
+  let resolvePromise: (value: unknown) => void;
   const promise = new Promise((resolve) => {
     resolvePromise = resolve;
   });
@@ -28,7 +28,8 @@ testGateReact19('resolves manually-controlled promise', async () => {
   expect(screen.queryByTestId('content')).not.toBeOnTheScreen();
   expect(screen.queryByTestId('sibling')).not.toBeOnTheScreen();
 
-  await act(async () => resolvePromise());
+  // eslint-disable-next-line require-await
+  await act(async () => resolvePromise(null));
   expect(screen.getByTestId('content')).toBeOnTheScreen();
   expect(screen.getByTestId('sibling')).toBeOnTheScreen();
   expect(screen.queryByText('Loading...')).not.toBeOnTheScreen();