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Fix Modal Fantom test (#54811)
Summary: Test was failing in CI with following error: ``` Summary of all failing tests FAIL packages/react-native/Libraries/Modal/__tests__/Modal-itest.js (5.619 s) ● <Modal> (hermes) › props › presentationStyle › renders a Modal with presentationStyle="pageSheet" Exception in HostFunction: MessageQueue is not empty at validateEmptyMessageQueue (native) 417 | require('react-native/src/private/testing/fantom/specs/NativeFantom').default; 418 | > 419 | NativeFantom.validateEmptyMessageQueue(); | ^ 420 | } 421 | 422 | function serializeError(error: Error): FailureDetail { at validateEmptyMessageQueue (private/react-native-fantom/runtime/setup.js:419:41) at invokeHooks (private/react-native-fantom/runtime/setup.js:286:11) at spec (private/react-native-fantom/runtime/setup.js:336:16) at suite (private/react-native-fantom/runtime/setup.js:390:20) at child (private/react-native-fantom/runtime/setup.js:374:33) at suite (private/react-native-fantom/runtime/setup.js:388:22) at child (private/react-native-fantom/runtime/setup.js:374:33) at suite (private/react-native-fantom/runtime/setup.js:388:22) at child (private/react-native-fantom/runtime/setup.js:374:33) at suite (private/react-native-fantom/runtime/setup.js:388:22) at child (private/react-native-fantom/runtime/setup.js:374:33) at suite (private/react-native-fantom/runtime/setup.js:388:22) at currentContext (private/react-native-fantom/runtime/setup.js:436:20) at anonymous (private/react-native-fantom/runtime/setup.js:470:27) ``` The Modal Fantom test was failing in CI with "MessageQueue is not empty" error. This was caused by Modal's componentDidMount subscribing to ModalEventEmitter, which schedules work in the message queue. When Fantom's afterEach hook runs validateEmptyMessageQueue(), it detects pending work and fails the test. Added Fantom.runWorkLoop() call at the end of the test to flush any pending messages in the queue before the test completes. This follows the established pattern used throughout the Fantom test suite for handling async operations. Changelog: [Internal] Fix Fantom test Differential Revision: D88538595
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‎packages/react-native/Libraries/Modal/__tests__/Modal-itest.js‎

Lines changed: 27 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -28,9 +28,15 @@ const DEFAULT_MODAL_CHILD_VIEW = (
2828
);
2929

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describe('<Modal>', () => {
31+
let root: Fantom.Root;
32+
33+
afterEach(() => {
34+
root.destroy();
35+
});
36+
3137
describe('props', () => {
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it('renders a Modal with the default values when no props are passed', () => {
33-
const root = Fantom.createRoot();
39+
root = Fantom.createRoot();
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Fantom.runTask(() => {
3642
root.render(<Modal />);
@@ -44,7 +50,7 @@ describe('<Modal>', () => {
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});
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describe('animationType', () => {
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it('renders a Modal with animationType="none" by default', () => {
47-
const root = Fantom.createRoot();
53+
root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal animationType="none" />);
@@ -61,7 +67,7 @@ describe('<Modal>', () => {
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(['slide', 'fade'] as const).forEach(animationType => {
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it(`renders a Modal with animationType="${animationType}"`, () => {
64-
const root = Fantom.createRoot();
70+
root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal animationType={animationType} />);
@@ -80,7 +86,7 @@ describe('<Modal>', () => {
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describe('presentationStyle', () => {
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it('renders a Modal with presentationStyle="fullScreen" by default', () => {
83-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal presentationStyle="fullScreen" />);
@@ -98,7 +104,7 @@ describe('<Modal>', () => {
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(['pageSheet', 'formSheet', 'overFullScreen'] as const).forEach(
99105
presentationStyle => {
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it(`renders a Modal with presentationStyle="${presentationStyle}"`, () => {
101-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal presentationStyle={presentationStyle} />);
@@ -117,7 +123,7 @@ describe('<Modal>', () => {
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});
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describe('transparent', () => {
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it('renders a Modal with transparent="true"', () => {
120-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal transparent={true} />);
@@ -137,7 +143,7 @@ describe('<Modal>', () => {
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});
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it('renders a Modal with transparent="false"', () => {
140-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal transparent={false} />);
@@ -156,7 +162,7 @@ describe('<Modal>', () => {
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});
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describe('statusBarTranslucent', () => {
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it('renders a Modal with statusBarTranslucent="true"', () => {
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const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal statusBarTranslucent={true} />);
@@ -171,7 +177,7 @@ describe('<Modal>', () => {
171177
);
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});
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it('renders a Modal with statusBarTranslucent="false"', () => {
174-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal statusBarTranslucent={false} />);
@@ -188,7 +194,7 @@ describe('<Modal>', () => {
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});
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describe('navigationBarTranslucent', () => {
190196
it('renders a Modal with navigationBarTranslucent="true" and statusBarTranslucent="true"', () => {
191-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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// navigationBarTranslucent=true with statusBarTranslucent=false is not supported
@@ -216,7 +222,7 @@ describe('<Modal>', () => {
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);
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});
218224
it('renders a Modal with navigationBarTranslucent="false"', () => {
219-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal navigationBarTranslucent={false} />);
@@ -238,7 +244,7 @@ describe('<Modal>', () => {
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describe('hardwareAccelerated', () => {
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it('renders a Modal with hardwareAccelerated="true"', () => {
241-
const root = Fantom.createRoot();
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root = Fantom.createRoot();
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Fantom.runTask(() => {
244250
root.render(<Modal hardwareAccelerated={true} />);
@@ -253,7 +259,7 @@ describe('<Modal>', () => {
253259
);
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});
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it('renders a Modal with hardwareAccelerated="false"', () => {
256-
const root = Fantom.createRoot();
262+
root = Fantom.createRoot();
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Fantom.runTask(() => {
259265
root.render(<Modal hardwareAccelerated={false} />);
@@ -271,7 +277,7 @@ describe('<Modal>', () => {
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272278
describe('visible', () => {
273279
it('renders a Modal with visible="true"', () => {
274-
const root = Fantom.createRoot();
280+
root = Fantom.createRoot();
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Fantom.runTask(() => {
277283
root.render(<Modal visible={true} />);
@@ -283,8 +289,9 @@ describe('<Modal>', () => {
283289
</rn-modalHostView>,
284290
);
285291
});
292+
286293
it('renders nothing when visible="false"', () => {
287-
const root = Fantom.createRoot();
294+
root = Fantom.createRoot();
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289296
Fantom.runTask(() => {
290297
root.render(<Modal visible={false} />);
@@ -296,7 +303,7 @@ describe('<Modal>', () => {
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297304
describe('allowSwipeDismissal', () => {
298305
it('renders a Modal with allowSwipeDismissal="true"', () => {
299-
const root = Fantom.createRoot();
306+
root = Fantom.createRoot();
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301308
Fantom.runTask(() => {
302309
root.render(<Modal allowSwipeDismissal={true} />);
@@ -311,7 +318,7 @@ describe('<Modal>', () => {
311318
);
312319
});
313320
it('renders a Modal with allowSwipeDismissal="false"', () => {
314-
const root = Fantom.createRoot();
321+
root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal allowSwipeDismissal={false} />);
@@ -332,7 +339,7 @@ describe('<Modal>', () => {
332339
// The 'animated' prop is deprecated and ignored when the Modal is rendered
333340
// Users should use the 'animationType' prop instead.
334341
it(`[DEPRECATED] renders a Modal with animated="${animated ? 'true' : 'false'}"`, () => {
335-
const root = Fantom.createRoot();
342+
root = Fantom.createRoot();
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Fantom.runTask(() => {
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root.render(<Modal animated={animated} />);
@@ -356,7 +363,8 @@ describe('<Modal>', () => {
356363
describe('instance', () => {
357364
it('uses the "RN:ModalHostView" tag name', () => {
358365
const elementRef = createRef<HostInstance>();
359-
const root = Fantom.createRoot();
366+
root = Fantom.createRoot();
367+
360368
Fantom.runTask(() => {
361369
root.render(<Modal ref={elementRef} />);
362370
});

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