session-desktop/ts/test/session/sending/PendingMessageCache_test.ts

// tslint:disable-next-line: no-require-imports no-var-requires
const Data = require('../../../../js/modules/data');

import { expect, assert } from 'chai';
import sinon from 'sinon';
import uuid from 'uuid';

import { ChatMessage } from '../../../session/messages/outgoing';
import { MessageUtils, PubKey } from '../../../session/utils';
import { PendingMessageCache } from '../../../session/sending/PendingMessageCache';
import { RawMessage } from '../../../session/types/RawMessage';
import { SignalService } from '../../../protobuf';

describe('PendingMessageCache', () => {
  const sandbox = sinon.createSandbox();
  let pendingMessageCacheStub: PendingMessageCache;

  // tslint:disable-next-line: promise-function-async
  const wrapInPromise = (value: any) => new Promise(r => {
    r(value);
  });

  const generateUniqueMessage = (): ChatMessage => {
    return new ChatMessage({
      body: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit',
      identifier: uuid(),
      timestamp: Date.now(),
      attachments: undefined,
      quote: undefined,
      expireTimer: undefined,
      lokiProfile: undefined,
      preview: undefined,
    });
  };

  beforeEach(async () => {
    const mockStorageObject = wrapInPromise([] as Array<RawMessage>);
    const voidPromise = wrapInPromise(undefined);

    // Stub out methods which touch the database.
    sandbox.stub(PendingMessageCache.prototype, 'getFromStorage').returns(mockStorageObject);
    sandbox.stub(PendingMessageCache.prototype, 'syncCacheWithDB').returns(voidPromise);

    // Initialize new stubbed cache
    pendingMessageCacheStub = new PendingMessageCache();
    await pendingMessageCacheStub.init();
  });

  afterEach(() => {
    sandbox.restore();
  });


  it('can initialize cache', async () => {
    const { cache } = pendingMessageCacheStub;

    // We expect the cache to initialise as an empty array
    expect(cache).to.be.instanceOf(Array);
    expect(cache).to.have.length(0);
  });


  it('can add to cache', async () => {
    const device = PubKey.generate();
    const message = generateUniqueMessage();
    const rawMessage = MessageUtils.toRawMessage(device, message);

    await pendingMessageCacheStub.add(device, message);

    // Verify that the message is in the cache
    const finalCache = pendingMessageCacheStub.cache;

    expect(finalCache).to.have.length(1);

    const addedMessage = finalCache[0];
    expect(addedMessage.device).to.deep.equal(rawMessage.device);
    expect(addedMessage.timestamp).to.deep.equal(rawMessage.timestamp);
  });

  it('can remove from cache', async () => {
    const device = PubKey.generate();
    const message = generateUniqueMessage();
    const rawMessage = MessageUtils.toRawMessage(device, message);

    await pendingMessageCacheStub.add(device, message);

    const initialCache = pendingMessageCacheStub.cache;
    expect(initialCache).to.have.length(1);

    // Remove the message
    await pendingMessageCacheStub.remove(rawMessage);

    const finalCache = pendingMessageCacheStub.cache;

    // Verify that the message was removed
    expect(finalCache).to.have.length(0);
  });

  it('can get devices', async () => {
    const cacheItems = [
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
    ];

    cacheItems.forEach(async item => {
      await pendingMessageCacheStub.add(item.device, item.message);
    });

    const { cache } = pendingMessageCacheStub;
    expect(cache).to.have.length(cacheItems.length);

    // Get list of devices
    const devicesKeys = cacheItems.map(item => item.device.key);
    const pulledDevices = pendingMessageCacheStub.getDevices();
    const pulledDevicesKeys = pulledDevices.map(d => d.key);

    // Verify that device list from cache is equivalent to devices added
    expect(pulledDevicesKeys).to.have.members(devicesKeys);
  });

  it('can get pending for device', async () => {
    const cacheItems = [
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
    ];

    cacheItems.forEach(async item => {
      await pendingMessageCacheStub.add(item.device, item.message);
    });

    const initialCache = pendingMessageCacheStub.cache;
    expect(initialCache).to.have.length(cacheItems.length);

    // Get pending for each specific device
    cacheItems.forEach(item => {
      const pendingForDevice = pendingMessageCacheStub.getForDevice(item.device);
      expect(pendingForDevice).to.have.length(1);
      expect(pendingForDevice[0].device).to.equal(item.device.key);
    });
  });

  it('can find nothing when empty', async () => {
    const device = PubKey.generate();
    const message = generateUniqueMessage();
    const rawMessage = MessageUtils.toRawMessage(device, message);

    const foundMessage = pendingMessageCacheStub.find(rawMessage);
    expect(foundMessage, 'a message was found in empty cache').to.be.undefined;
  });

  it('can find message in cache', async () => {
    const device = PubKey.generate();
    const message = generateUniqueMessage();
    const rawMessage = MessageUtils.toRawMessage(device, message);

    await pendingMessageCacheStub.add(device, message);

    const finalCache = pendingMessageCacheStub.cache;
    expect(finalCache).to.have.length(1);

    const foundMessage = pendingMessageCacheStub.find(rawMessage);
    expect(foundMessage, 'message not found in cache').to.be.ok;
    foundMessage && expect(foundMessage.device).to.equal(device.key);
  });

  it('can clear cache', async () => {
    const cacheItems = [
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
      {
        device: PubKey.generate(),
        message: generateUniqueMessage(),
      },
    ];

    cacheItems.forEach(async item => {
      await pendingMessageCacheStub.add(item.device, item.message);
    });

    const initialCache = pendingMessageCacheStub.cache;
    expect(initialCache).to.have.length(cacheItems.length);

    // Clear cache
    await pendingMessageCacheStub.clear();

    const finalCache = pendingMessageCacheStub.cache;
    expect(finalCache).to.have.length(0);
  });

});