Files
notifications-admin/tests/javascripts/colourPreview.test.js
2023-08-18 11:30:30 -04:00

140 lines
3.4 KiB
JavaScript

const helpers = require('./support/helpers.js');
beforeAll(() => {
require('../../app/assets/javascripts/colourPreview.js');
});
afterAll(() => {
require('./support/teardown.js');
});
describe('Colour preview', () => {
let field;
let textbox;
let swatchEl;
beforeEach(() => {
// set up DOM
document.body.innerHTML = `
<div class="usa-form-group">
<label class="govuk-form-label" for="colour">
Colour
</label>
<input class="govuk-input govuk-input--width-6" id="colour" name="colour" rows="8" type="text" value="" data-module="colour-preview">
</div>`;
field = document.querySelector('.usa-form-group');
textbox = document.querySelector('input[type=text]');
});
afterEach(() => {
document.body.innerHTML = '';
});
describe("When the page loads", () => {
test("It should add a swatch element for the preview", () => {
// start the module
window.GOVUK.modules.start();
swatchEl = document.querySelector('.textbox-colour-preview');
expect(swatchEl).not.toBeNull();
});
test("If the textbox is empty it should make the swatch white", () => {
// start the module
window.GOVUK.modules.start();
swatchEl = document.querySelector('.textbox-colour-preview');
// textbox defaults to empty
// colours are output in RGB
expect(swatchEl.style.background).toEqual('rgb(255, 255, 255)');
});
test("If the textbox has a value which is a hex code it should add that colour to the swatch", () => {
textbox.setAttribute('value', '#00FF00');
// start the module
window.GOVUK.modules.start();
swatchEl = document.querySelector('.textbox-colour-preview');
// colours are output in RGB
expect(swatchEl.style.background).toEqual('rgb(0, 255, 0)');
});
test("If the textbox has a value which isn't a hex code it should make the swatch white", () => {
textbox.setAttribute('value', 'green');
// start the module
window.GOVUK.modules.start();
swatchEl = document.querySelector('.textbox-colour-preview');
// colours are output in RGB
expect(swatchEl.style.background).toEqual('rgb(255, 255, 255)');
});
});
describe("When input is added to the textbox", () => {
beforeEach(() => {
// start the module
window.GOVUK.modules.start();
swatchEl = document.querySelector('.textbox-colour-preview');
});
test("If the textbox is empty it should make the swatch white", () => {
helpers.triggerEvent(document.querySelector('input[type=text]'), 'input');
// textbox defaults to empty
expect(swatchEl.style.background).toEqual('rgb(255, 255, 255)');
});
test("If the textbox has a value which is a hex code it should add that colour to the swatch", () => {
textbox.setAttribute('value', '#00FF00');
helpers.triggerEvent(document.querySelector('input[type=text]'), 'input');
// textbox defaults to empty
expect(swatchEl.style.background).toEqual('rgb(0, 255, 0)');
});
test("If the textbox has a value which isn't a hex code it should make the swatch white", () => {
textbox.setAttribute('value', 'green');
helpers.triggerEvent(document.querySelector('input[type=text]'), 'input');
// textbox defaults to empty
expect(swatchEl.style.background).toEqual('rgb(255, 255, 255)');
});
});
});