fix(wsi): mount WSI/SM viewports via setDisplaySets (#6107)

tests/WSI.spec.ts

@@ -0,0 +1,23 @@
+import { test, visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+// A DICOM VL Whole Slide Microscopy (SM) study. Opened in `viewer` mode it is
+// routed to the cornerstone3D WHOLE_SLIDE viewport (mode-basic registers
+// `ohif.wsiSopClassHandler`), which is the render path that previously
+// regressed to a gray canvas. This screenshot comparison is a
+// simple safeguard: if the WSI viewport fails to mount and renders gray again,
+// the baseline no longer matches and the test fails.
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.2.276.0.7230010.3.1.2.296485376.1.1665793212.499772';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 5000);
+});
+
+test('should render the WSI viewport', async ({ page, viewportPageObject }) => {
+  // WSI tiles load progressively; checkForScreenshot's built-in retry loop
+  // gives the viewport time to paint before comparing against the baseline.
+  await checkForScreenshot({
+    page,
+    locator: viewportPageObject.grid,
+    screenshotPath: screenShotPaths.wsi.wsiDisplayedCorrectly,
+  });
+});

tests/utils/screenShotPaths.ts

@@ -224,6 +224,9 @@ const screenShotPaths = {
   workList: {
     scrollBarRenderedProperly: 'scrollBarRenderedProperly.png',
   },
+  wsi: {
+    wsiDisplayedCorrectly: 'wsiDisplayedCorrectly.png',
+  },
 };
 
 export { screenShotPaths };