test-aaa-pattern.ts

describe('expandmode', () => {
	it('should allow one accordion items open when set to “single”', async () => {
		element.expandedmode = ‘single’;
		const accordionItem1OpenStateBefore = accordionItem1.open;
		const accordionItem2OpenStateBefore = accordionItem2.open;

		accordionItem1.open = true;
		accordionItem2.open = true;

		expect(accordionItem1OpenStateBefore).toBeFalsy();
		expect(accordionItem2OpenStateBefore).toBeFalsy();
		expect(accordionItem1.open).toBeFalsy();
		expect(accordionItem2.open).toBeTruthy();
	});

   it('should allow multiple items to open when set to “multi”', async () => {
	  element.expandmode = 'multi';

	  const accordionItem1OpenStateBefore = accordionItem1.open;
	  const accordionItem2OpenStateBefore = accordionItem2.open;

	  accordionItem1.expanded = true;
	  accordionItem2.expanded = true;

	  expect(accordionItem1OpenStateBefore).toBeFalsy();
	  expect(accordionItem2OpenStateBefore).toBeFalsy();
	  expect(accordionItem1.expanded).toBeTruthy();
	  expect(accordionItem2.expanded).toBeTruthy();
	});
});