Test(web): Add tests for Toast component

Author: pavelklibani

packages/web/src/js/__tests__/Toast.test.ts

@@ -0,0 +1,112 @@
+import { clearFixture, getFixture } from '../../../tests/helpers/fixture';
+import Toast from '../Toast';
+import {
+  ATTRIBUTE_ARIA_EXPANDED,
+  ATTRIBUTE_DATA_TARGET,
+  CLASS_NAME_HIDDEN,
+  CLASS_NAME_OPEN,
+  CLASS_NAME_TRANSITIONING,
+} from '../constants';
+import EventHandler from '../dom/EventHandler';
+
+const testId = 'toast-test';
+
+const toastHtmlClosed = `
+  <div id="${testId}" class="ToastBar ToastBar--success ToastBar--dismissible is-hidden">
+    <button type="button" data-spirit-target="#${testId}" aria-expanded="false">Close</button>
+  </div>
+`;
+
+const toastHtmlOpened = `
+  <div id="${testId}" class="ToastBar ToastBar--success ToastBar--dismissible is-open">
+    <button type="button" data-spirit-target="#${testId}" aria-expanded="true">Close</button>
+  </div>
+`;
+
+describe('Toast', () => {
+  let fixtureEl: Element;
+
+  beforeAll(() => {
+    fixtureEl = getFixture();
+  });
+
+  afterEach(() => {
+    clearFixture();
+  });
+
+  describe('NAME', () => {
+    it('should return plugin name', () => {
+      expect(Toast.NAME).toEqual(expect.any(String));
+    });
+  });
+
+  describe('DATA_KEY', () => {
+    it('should return plugin data key', () => {
+      expect(Toast.DATA_KEY).toBe('toast');
+    });
+  });
+
+  describe('EVENT_KEY', () => {
+    it('should return plugin event key', () => {
+      expect(Toast.EVENT_KEY).toBe('.toast');
+    });
+  });
+
+  describe('constructor', () => {
+    it('should construct a toast', () => {
+      fixtureEl.innerHTML = toastHtmlClosed;
+      const element = fixtureEl.querySelector('.ToastBar') as HTMLElement;
+      const toast = new Toast(element);
+
+      expect(toast.element).toEqual(element);
+    });
+  });
+
+  describe('show', () => {
+    it('should show a toast', async () => {
+      fixtureEl.innerHTML = toastHtmlClosed;
+
+      const element = fixtureEl.querySelector('.ToastBar') as HTMLElement;
+      const toast = new Toast(element);
+      const trigger = fixtureEl.querySelector(`[${ATTRIBUTE_DATA_TARGET}="#${testId}"]`) as HTMLButtonElement;
+
+      const showSpy = jest.spyOn(Toast.prototype, 'show');
+
+      await toast.show();
+
+      expect(showSpy).toHaveBeenCalled();
+      expect(trigger).toHaveAttribute(ATTRIBUTE_ARIA_EXPANDED, 'true');
+      expect(element).toHaveClass(CLASS_NAME_OPEN);
+      expect(element).toHaveClass(CLASS_NAME_TRANSITIONING);
+
+      EventHandler.trigger(element, 'transitionend');
+
+      expect(element).toHaveClass(CLASS_NAME_OPEN);
+      expect(element).not.toHaveClass(CLASS_NAME_HIDDEN);
+      expect(element).not.toHaveClass(CLASS_NAME_TRANSITIONING);
+    });
+  });
+
+  describe('hide', () => {
+    it('should hide a toast', async () => {
+      fixtureEl.innerHTML = toastHtmlOpened;
+
+      const element = fixtureEl.querySelector('.ToastBar') as HTMLElement;
+      const toast = new Toast(element);
+      const trigger = fixtureEl.querySelector(`[${ATTRIBUTE_DATA_TARGET}="#${testId}"]`) as HTMLButtonElement;
+
+      const hideSpy = jest.spyOn(Toast.prototype, 'hide');
+
+      await toast.hide();
+
+      expect(hideSpy).toHaveBeenCalled();
+      expect(trigger).toHaveAttribute(ATTRIBUTE_ARIA_EXPANDED, 'false');
+      expect(element).toHaveClass(CLASS_NAME_HIDDEN);
+      expect(element).toHaveClass(CLASS_NAME_TRANSITIONING);
+
+      EventHandler.trigger(element, 'transitionend');
+
+      expect(fixtureEl.querySelector('.ToastBar')).toBeNull();
+    });
+  });
+});