marko/packages/runtime-class/test/components-browser/fixtures/preserve-dom-loop/test.js

var expect = require("chai").expect;

module.exports = function (helpers) {
  var items = ["a", "b", "c"];
  var count = 0;

  var component = helpers.mount(require.resolve("./index"), {
    items: items,
    count: count,
  });

  expect(
    helpers.targetEl.firstElementChild.getAttribute("data-count"),
  ).to.equal("0");

  Array.from(helpers.targetEl.firstElementChild.childNodes).forEach((child) => {
    if (child.tagName === "div") {
      expect(child.getAttribute("data-count")).to.equal("0");
    }
  });

  expect(helpers.targetEl.textContent).to.equal("abc");

  component.input = {
    count: ++count,
    items: [].concat(items).reverse(),
  };
  component.update();

  expect(
    helpers.targetEl.firstElementChild.getAttribute("data-count"),
  ).to.equal("1");

  Array.from(helpers.targetEl.firstElementChild.childNodes).forEach((child) => {
    if (child.tagName === "div") {
      expect(child.getAttribute("data-count")).to.equal("0");
    }
  });

  expect(helpers.targetEl.textContent).to.equal("cba");
};