Function createTestScroller

tests/unit/utils/VirtualScroller.test.ts:8–29

(items: TestItem[])

};

function createTestScroller(items: TestItem[]) {
	const container = document.createElement("div");
	container.style.overflowY = "auto";

	const renderItem = jest.fn((item: TestItem, index: number) => {
		const element = document.createElement("div");
		element.dataset.key = item.id;
		element.textContent = `${item.label}:${index}`;
		return element;
	});

	const scroller = new VirtualScroller<TestItem>({
		container,
		items,
		itemHeight: 20,
		overscan: 0,
		renderItem,
		getItemKey: (item) => item.id,
	});

	return { container, renderItem, scroller };
}

function createTestScrollerWithContainer(container: HTMLElement, items: TestItem[]) {
	const renderItem = jest.fn((item: TestItem, index: number) => {