snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

web_src/js/modules/tippy.test.ts

@@ -0,0 +1,16 @@
+import {availableSizeForPlacement} from './tippy.ts';
+
+test('availableSizeForPlacement', () => {
+  const rect = (values: Partial<DOMRect>) => values as DOMRect;
+  vi.spyOn(window, 'innerHeight', 'get').mockReturnValue(1000);
+  vi.spyOn(window, 'innerWidth', 'get').mockReturnValue(800);
+
+  // on the placement axis it is the gap to the edge the popup opens towards, the viewport on the other
+  expect(availableSizeForPlacement(rect({top: 400, bottom: 432}), 'bottom-end', 0)).toEqual({width: 784, height: 560});
+  expect(availableSizeForPlacement(rect({top: 400, bottom: 432}), 'top-end', 0)).toEqual({width: 784, height: 392});
+  expect(availableSizeForPlacement(rect({left: 100, right: 300}), 'right', 0)).toEqual({width: 492, height: 984});
+  expect(availableSizeForPlacement(rect({left: 100, right: 300}), 'left', 0)).toEqual({width: 92, height: 984});
+
+  // the placement offset eats into the space on that axis
+  expect(availableSizeForPlacement(rect({top: 400, bottom: 432}), 'bottom-end', -6).height).toEqual(554);
+});