Updates

Author: cmdcolin

packages/core/src/util/tracks.ts

@@ -1,4 +1,9 @@
-import { getParent, isRoot, isStateTreeNode } from '@jbrowse/mobx-state-tree'
+import {
+  getParent,
+  getSnapshot,
+  isRoot,
+  isStateTreeNode,
+} from '@jbrowse/mobx-state-tree'
 
 import {
   getFileHandle,
@@ -521,9 +526,13 @@ export function showTrackGeneric(
   }
 
   // Allow plugins to preprocess the track config (e.g. to add default displays)
+  // Use getSnapshot for MST models, structuredClone for plain objects
+  const confSnapshot = isStateTreeNode(rawConf)
+    ? getSnapshot(rawConf)
+    : structuredClone(rawConf)
   const conf = pluginManager.evaluateExtensionPoint(
     'Core-preProcessTrackConfig',
-    structuredClone(rawConf),
+    confSnapshot,
   ) as typeof rawConf
 
   const trackType = pluginManager.getTrackType(conf.type)

products/jbrowse-web/browser-tests/__snapshots__/alignments-volvox-sv.png

@@ -317,12 +317,14 @@ const testSuites: TestSuite[] = [
             ],
           }
 
-          const specParam = JSON.stringify(sessionSpec)
+          const specParam = encodeURIComponent(JSON.stringify(sessionSpec))
           const url = `http://localhost:${PORT}/?config=test_data/volvox/config.json&session=spec-${specParam}`
+          console.log({ url })
           await page.goto(url, { waitUntil: 'networkidle0', timeout: 60000 })
 
           await findByText(page, 'ctgA')
-          await findByTestId(page, 'stack-canvas', 60000)
+          // The UMD plugin adds LinearReadCloudDisplay with drawCloud:true for _sv tracks
+          await findByTestId(page, 'cloud-canvas', 60000)
           await waitForLoadingToComplete(page)
           await delay(1000)
           await snapshot(page, 'session-spec-display-snapshot-type')
@@ -678,6 +680,17 @@ const testSuites: TestSuite[] = [
           await snapshot(page, 'alignments-bam')
         },
       },
+      {
+        name: 'volvox_sv track screenshot',
+        fn: async page => {
+          await navigateToApp(page)
+          await openTrack(page, 'volvox_sv')
+          // The UMD plugin adds LinearReadCloudDisplay with drawCloud:true for _sv tracks
+          await findByTestId(page, 'cloud-canvas', 60000)
+          await waitForLoadingToComplete(page)
+          await snapshot(page, 'alignments-volvox-sv')
+        },
+      },
     ],
   },
   {