test(contour): add test for RT contour position after viewport maximize/restore (#6036)

tests/RTContourViewportLayoutChange.spec.ts

@@ -0,0 +1,46 @@
+import { expect, test, visitStudy, getSvgAttribute, waitForViewportRenderCycle } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.6.1.4.1.12201.1091.126683095609223531686845324113579088978';
+  const mode = 'segmentation';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+test('should keep RT contours correctly positioned after maximizing and restoring the viewport', async ({
+  page,
+  viewportPageObject,
+  leftPanelPageObject,
+  DOMOverlayPageObject,
+}) => {
+  await leftPanelPageObject.loadSeriesByModality('RTSTRUCT');
+
+  let viewportRenderCycle = waitForViewportRenderCycle(page);
+  await DOMOverlayPageObject.viewport.segmentationHydration.yes.click();
+  await viewportRenderCycle;
+
+  const initialSvgPath = await getSvgAttribute({
+    viewportPageObject,
+    svgInnerElement: 'path',
+    attributeName: 'd',
+  });
+
+  expect(initialSvgPath).not.toBeNull();
+  const activeViewport = await viewportPageObject.active;
+
+  viewportRenderCycle = waitForViewportRenderCycle(page);
+  // First double-click: maximize viewport to one-up layout
+  await activeViewport.pane.dblclick();
+  await viewportRenderCycle;
+
+  viewportRenderCycle = waitForViewportRenderCycle(page);
+  // Second double-click: restore to the original multi-viewport layout
+  await activeViewport.pane.dblclick();
+  await viewportRenderCycle;
+
+  const restoredSvgPath = await getSvgAttribute({
+    viewportPageObject,
+    svgInnerElement: 'path',
+    attributeName: 'd',
+  });
+  expect(restoredSvgPath).not.toBeNull();
+  expect(restoredSvgPath).toBe(initialSvgPath);
+});