67 lines
1.6 KiB
JavaScript
67 lines
1.6 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow
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*/
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'use strict';
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const React = require('react');
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const ReactNative = require('react-native');
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const {NativeAppEventEmitter, StyleSheet, Text, View} = ReactNative;
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const {TestModule} = ReactNative.NativeModules;
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const deepDiffer = require('deepDiffer');
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const TEST_PAYLOAD = {foo: 'bar'};
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type AppEvent = {data: Object, ts: number};
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type State = {
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sent: 'none' | AppEvent,
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received: 'none' | AppEvent,
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elapsed?: string,
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};
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class AppEventsTest extends React.Component<{}, State> {
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state: State = {sent: 'none', received: 'none'};
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componentDidMount() {
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NativeAppEventEmitter.addListener('testEvent', this.receiveEvent);
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const event = {data: TEST_PAYLOAD, ts: Date.now()};
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TestModule.sendAppEvent('testEvent', event);
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this.setState({sent: event});
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}
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receiveEvent = (event: any) => {
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if (deepDiffer(event.data, TEST_PAYLOAD)) {
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throw new Error('Received wrong event: ' + JSON.stringify(event));
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}
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const elapsed = Date.now() - event.ts + 'ms';
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this.setState({received: event, elapsed}, () => {
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TestModule.markTestCompleted();
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});
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};
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render() {
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return (
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<View style={styles.container}>
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<Text>{JSON.stringify(this.state, null, ' ')}</Text>
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</View>
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);
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}
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}
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AppEventsTest.displayName = 'AppEventsTest';
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const styles = StyleSheet.create({
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container: {
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margin: 40,
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},
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});
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module.exports = AppEventsTest;
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