marko/packages/runtime-class/test/components-browser/fixtures/event-detach-el-preventDefault/test.js

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

module.exports = function (helpers) {
  var component = helpers.mount(require.resolve("./index"), {
    colors: ["red", "green", "blue"],
  });

  expect(component.events.length).to.equal(0);

  var finishDetach;

  component.handleDetach = function (color, event) {
    expect(color).to.equal("green");
    finishDetach = event.detach;
    event.preventDefault();
  };

  component.input = {
    colors: ["red", "blue"],
  };

  component.update();

  expect(component.el.querySelectorAll("li").length).to.equal(3);
  expect(component.el.querySelectorAll("li")[1].innerHTML).to.contain("green");

  finishDetach();

  expect(component.el.querySelectorAll("li").length).to.equal(2);
  expect(component.el.querySelectorAll("li")[1].innerHTML).to.contain("blue");
};