July 2017
Intermediate to advanced
300 pages
5h 43m
English
book
Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
by Dmitry Sheiko
Content preview from Cross-platform Desktop Application Development: Electron, Node, NW.js, and React
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Testing reducers
Reducers, as well as action creators, are pure functions. They accept the last state tree object and the dispatched action in parameters and produce a new state tree object. So, when testing a reducer, we are checking whether a given action modifies the state as intended:
./js/Reducers/index.spec.js
import { createStore } from "redux"; import { createReducer } from "redux-act"; import { TAB_SCREENSHOT, SCREENSHOT_DEFAULT_FILENAME, ANIMATION_DEFAULT_FILENAME } from "../Constants"; import { appReducer } from "./index"; describe( "appReducer", () => { it( "should return default state", () => { const DEFAULT_STATE = { isRecording: false, activeTab: TAB_SCREENSHOT, screenshotFilename: SCREENSHOT_DEFAULT_FILENAME, animationFilename: ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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