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wip: add test for #209215

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João Moreno 2024-06-27 13:38:08 +02:00
parent 2e3a1d8bd9
commit 0a489e121f
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33
src/vs/base/test/browser/ui/tree/objectTree.test.ts
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@ -221,6 +221,39 @@ suite('ObjectTree', function () {
tree.setChildren(null, [{ element: 100 }, { element: 101 }, { element: 102 }, { element: 103 }]);
assert.deepStrictEqual(tree.getFocus(), [101]);
});
test('onDidChangeFocus should focus when elements go away', function () {
const container = document.createElement('div');
container.style.width = '200px';
container.style.height = '200px';
const delegate = new class implements IListVirtualDelegate<number> {
getHeight() { return 20; }
getTemplateId(): string { return 'default'; }
};
const renderer = new class implements ITreeRenderer<number, void, HTMLElement> {
readonly templateId = 'default';
renderTemplate(container: HTMLElement): HTMLElement { return container; }
renderElement(element: ITreeNode<number, void>, index: number, templateData: HTMLElement): void { templateData.textContent = `${element.element}`; }
disposeTemplate(): void { }
};
const tree = new ObjectTree<number>('test', container, delegate, [renderer]);
tree.layout(200);
let eventCount = 0;
tree.onDidChangeFocus(() => eventCount++);
tree.setChildren(null, [{ element: 0 }, { element: 1 }, { element: 2 }, { element: 3 }]);
tree.setFocus([1]);
assert.equal(eventCount, 1);
assert.deepStrictEqual(tree.getFocus(), [1]);
tree.setChildren(null, []);
assert.equal(eventCount, 2);
assert.deepStrictEqual(tree.getFocus(), []);
});
});
function getRowsTextContent(container: HTMLElement): string[] {