text: import Placeholder from '../src/js/placeholder';
  
  let placeholder;
  beforeAll(() => {
    placeholder = new Placeholder();
  });
  
  describe('Placeholder class constructor', () => {
    test('it should correctly construct a placeholder object', () => {
      expect(placeholder instanceof Placeholder).toBe(true);
    });
  });
  
  describe('Placeholder.methodA()', () => {
    test('it should return confirmation of a successful call', () => {
      expect(placeholder.methodA()).toBe(
        'Placeholder.prototype.methodA() successfully called and returned'
      );
    });
  });
  
  describe('Placeholder.methodB()', () => {
    test('it should return confirmation of a successful call', () => {
      expect(placeholder.methodB()).toBe(
        'Placeholder.prototype.methodB() successfully called and returned'
      );
    });
  });
  