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@expressen/tallahassee

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    @expressen/tallahassee

Lightweight client testing framework


Version published
Weekly downloads
747
increased by84.44%
Maintainers
16
Install size
13.7 MB
Created
Weekly downloads
 

Changelog

Source

15.5.0

  • Bugfix for custom elements where modifications to child elements in connectedCallback would trigger a new instance of the custom element being created and that ones connectedCallback being invoked

Readme

Source

Tallahassee

Utilities

Built latest

Test your client scripts in a headless browser.

Introduction

Supports just about everything.

Example:

"use strict";

const Browser = require("@expressen/tallahassee");
const Script = require("@bonniernews/wichita");
const { app } = require("../app/app.js");

describe("Tallahassee", () => {
  describe("navigateTo()", () => {
    it("navigates to url", async () => {
      await new Browser(app).navigateTo("/");
    });

    it("throws if not 200", async () => {
      try {
        await new Browser(app).navigateTo("/404");
      } catch (e) {
        var err = e; // eslint-disable-line no-var
      }
      expect(err).to.be.ok;
    });

    it("unless you override status code", async () => {
      const browser = await new Browser(app).navigateTo("/404", null, 404);
      expect(browser.document.getElementsByTagName("h1")[0].innerText).to.equal("Apocalyptic");
    });
  });

  describe("run script", () => {
    it("run es6 script sources with @bonniernews/wichita", async () => {
      const browser = await new Browser(app).navigateTo("/", { cookie: "_ga=1" });

      await new Script("./app/assets/scripts/main.js").run(browser.window);

      expect(browser.document.cookie).to.equal("_ga=1");
      expect(browser.document.getElementsByClassName("set-by-js")).to.have.length(1);
    });

    it("again", async () => {
      const browser = await new Browser(app).navigateTo("/");

      await new Script("./app/assets/scripts/main.js").run(browser.window);

      expect(browser.document.cookie).to.equal("");
      expect(browser.document.getElementsByClassName("set-by-js")).to.have.length(0);
    });
  });
});

External scripts

May we suggest you to use Wichita, the Tallahassee sidekick. It can be found here https://www.npmjs.com/package/@bonniernews/wichita

Timers

If overriding timers on window, e.g. setTimeout it can be a good idea to make them asynchronous since they tend to be recurring.

Example:

browser.window.setTimeout = function mySetTimeout(fn, ms, ...args) {
  process.nextTick(fn, ...args);
};

Keywords

FAQs

Last updated on 14 Dec 2023

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