Reliable DOM testing
npm install browser-monkey
Browser Monkey is a DOM assertion library. It helps you write framework agnostic browser tests that are reliable in the face of asynchronous behaviours like animations, AJAX and delayed rendering. It also helps you to write tests that exhibit the semantic meaning of the page, as opposed to a jumble of CSS selectors.
Here is an example project that demonstrates how to use browser-monkey with Karma.
@dereke has made an excellent video of a TDD session using browser-monkey.
import createMonkey from "browser-monkey/create";
import createTestDiv from "browser-monkey/lib/createTestDiv";
import hyperdom from "hyperdom";
import App from "./app";
describe("beer app", () => {
let page;
beforeEach(() => {
const $testContainer = createTestDiv();
hyperdom.append($testContainer, new App());
page = createMonkey($testContainer);
});
it("greets me", async () => {
await page.find("h1").shouldHave({ text: "Hello Lubbers" });
});
it("shows me beer", async () => {
await page.click("Beer");
await page.shouldHave({ text: "Punk IPA" });
});
});
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