Vim-Vixen/test/content/reducers/input.test.js

import { expect } from "chai";
import actions from 'content/actions';
import inputReducer from 'content/reducers/input';

describe("input reducer", () => {
  it('return the initial state', () => {
    let state = inputReducer(undefined, {});
    expect(state).to.have.deep.property('keys', '');
  });

  it('return next state for INPUT_KEY_PRESS', () => {
    let action = { type: actions.INPUT_KEY_PRESS, key: 'a' };
    let state = inputReducer(undefined, action);
    expect(state).to.have.deep.property('keys', 'a');

    action = { type: actions.INPUT_KEY_PRESS, key: '<C-B>' };
    state = inputReducer(state, action);
    expect(state).to.have.deep.property('keys', 'a<C-B>');
  });

  it('return next state for INPUT_CLEAR_KEYS', () => {
    let action = { type: actions.INPUT_CLEAR_KEYS };
    let state = inputReducer({ keys: 'abc' }, action);
    expect(state).to.have.deep.property('keys', '');
  });
});