metamask-extension/ui/app/pages/send/send-content/send-amount-row/amount-max-button/tests/amount-max-button-container.test.js

import assert from 'assert';
import proxyquire from 'proxyquire';
import sinon from 'sinon';

let mapStateToProps;
let mapDispatchToProps;

const actionSpies = {
  setMaxModeTo: sinon.spy(),
  updateSendAmount: sinon.spy(),
};
const duckActionSpies = {
  updateSendErrors: sinon.spy(),
};

proxyquire('../amount-max-button.container.js', {
  'react-redux': {
    connect: (ms, md) => {
      mapStateToProps = ms;
      mapDispatchToProps = md;
      return () => ({});
    },
  },
  '../../../../../selectors': {
    getGasTotal: (s) => `mockGasTotal:${s}`,
    getSendToken: (s) => `mockSendToken:${s}`,
    getSendFromBalance: (s) => `mockBalance:${s}`,
    getTokenBalance: (s) => `mockTokenBalance:${s}`,
    getSendMaxModeState: (s) => `mockMaxModeOn:${s}`,
    getBasicGasEstimateLoadingStatus: (s) => `mockButtonDataLoading:${s}`,
  },
  './amount-max-button.utils.js': {
    calcMaxAmount: (mockObj) => mockObj.val + 1,
  },
  '../../../../../store/actions': actionSpies,
  '../../../../../ducks/send/send.duck': duckActionSpies,
});

describe('amount-max-button container', function () {
  describe('mapStateToProps()', function () {
    it('should map the correct properties to props', function () {
      assert.deepStrictEqual(mapStateToProps('mockState'), {
        balance: 'mockBalance:mockState',
        buttonDataLoading: 'mockButtonDataLoading:mockState',
        gasTotal: 'mockGasTotal:mockState',
        maxModeOn: 'mockMaxModeOn:mockState',
        sendToken: 'mockSendToken:mockState',
        tokenBalance: 'mockTokenBalance:mockState',
      });
    });
  });

  describe('mapDispatchToProps()', function () {
    let dispatchSpy;
    let mapDispatchToPropsObject;

    beforeEach(function () {
      dispatchSpy = sinon.spy();
      mapDispatchToPropsObject = mapDispatchToProps(dispatchSpy);
    });

    describe('setAmountToMax()', function () {
      it('should dispatch an action', function () {
        mapDispatchToPropsObject.setAmountToMax({ val: 11, foo: 'bar' });
        assert(dispatchSpy.calledTwice);
        assert(duckActionSpies.updateSendErrors.calledOnce);
        assert.deepStrictEqual(
          duckActionSpies.updateSendErrors.getCall(0).args[0],
          {
            amount: null,
          },
        );
        assert(actionSpies.updateSendAmount.calledOnce);
        assert.strictEqual(actionSpies.updateSendAmount.getCall(0).args[0], 12);
      });
    });

    describe('setMaxModeTo()', function () {
      it('should dispatch an action', function () {
        mapDispatchToPropsObject.setMaxModeTo('mockVal');
        assert(dispatchSpy.calledOnce);
        assert.strictEqual(
          actionSpies.setMaxModeTo.getCall(0).args[0],
          'mockVal',
        );
      });
    });
  });
});