18F/web-design-standards

const fs = require("fs");
const path = require("path");
const assert = require("assert");
const ComboBox = require("../index");

const INVALID_TEMPLATE_NO_MESSAGE = fs.readFileSync(
  path.join(__dirname, "/invalid-template-no-select.template.html")
);

describe("character count component without message", () => {
  const { body } = document;

  afterEach(() => {
    body.textContent = "";
    ComboBox.off(body);
  });

  it("should throw an error when a combo box component is created with no select element", () => {
    body.innerHTML = INVALID_TEMPLATE_NO_MESSAGE;
    assert.throws(() => ComboBox.on(), {
      message: ".usa-combo-box is missing inner select",
    });
  });
});