react-native/Libraries/BatchedBridge/__tests__/MessageQueue-test.js

88 lines
2.8 KiB
JavaScript

/**
* Copyright (c) 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
'use strict';
// const MessageQueueTestConfig = require('MessageQueueTestConfig');
jest.unmock('MessageQueue');
jest.unmock('defineLazyObjectProperty');
let MessageQueue;
let MessageQueueTestModule;
let queue;
const MODULE_IDS = 0;
const METHOD_IDS = 1;
const PARAMS = 2;
const assertQueue = (flushedQueue, index, moduleID, methodID, params) => {
expect(flushedQueue[MODULE_IDS][index]).toEqual(moduleID);
expect(flushedQueue[METHOD_IDS][index]).toEqual(methodID);
expect(flushedQueue[PARAMS][index]).toEqual(params);
};
// Important things to test:
//
// [x] Local modules can be invoked through the queue.
//
// [ ] Local modules that throw exceptions are gracefully caught. In that case
// local callbacks stored by IDs are cleaned up.
describe('MessageQueue', function() {
beforeEach(function() {
jest.resetModules();
MessageQueue = require('MessageQueue');
MessageQueueTestModule = require('MessageQueueTestModule');
queue = new MessageQueue();
queue.registerCallableModule(
'MessageQueueTestModule',
MessageQueueTestModule
);
queue.createDebugLookup(0, 'MessageQueueTestModule',
['testHook1', 'testHook2']);
});
it('should enqueue native calls', () => {
queue.enqueueNativeCall(0, 1, [2]);
const flushedQueue = queue.flushedQueue();
assertQueue(flushedQueue, 0, 0, 1, [2]);
});
it('should call a local function with the function name', () => {
MessageQueueTestModule.testHook2 = jasmine.createSpy();
expect(MessageQueueTestModule.testHook2.calls.count()).toEqual(0);
queue.__callFunction('MessageQueueTestModule', 'testHook2', [2]);
expect(MessageQueueTestModule.testHook2.calls.count()).toEqual(1);
});
it('should store callbacks', () => {
queue.enqueueNativeCall(0, 1, ['foo'], null, null);
const flushedQueue = queue.flushedQueue();
assertQueue(flushedQueue, 0, 0, 1, ['foo']);
});
it('should call the stored callback', () => {
let done = false;
queue.enqueueNativeCall(0, 1, [], () => {}, () => { done = true; });
queue.__invokeCallback(1);
expect(done).toEqual(true);
});
it('should throw when calling the same callback twice', () => {
queue.enqueueNativeCall(0, 1, [], () => {}, () => {});
queue.__invokeCallback(1);
expect(() => queue.__invokeCallback(1)).toThrow();
});
it('should throw when calling both success and failure callback', () => {
queue.enqueueNativeCall(0, 1, [], () => {}, () => {});
queue.__invokeCallback(1);
expect(() => queue.__invokeCallback(0)).toThrow();
});
});