Fixes

Author: DonJayamanne

src/client/datascience/notebook/notebookEditorProvider.ts

@@ -180,6 +180,9 @@ export class NotebookEditorProvider implements INotebookEditorProvider {
         const deferred = this.notebooksWaitingToBeOpenedByUri.get(uri.toString())!;
         deferred.resolve(editor);
         this.notebookEditorsByUri.set(uri.toString(), editor);
+        if (!model.isTrusted) {
+            await this.commandManager.executeCommand(Commands.TrustNotebook, model.file);
+        }
     }
     private onDidChangeActiveVsCodeNotebookEditor(editor: VSCodeNotebookEditor | undefined) {
         if (!editor) {

src/test/datascience/.vscode/settings.json

@@ -24,5 +24,6 @@
     "files.autoSave": "off",
     // We don't want jupyter to start when testing (DS functionality or anything else).
     "python.dataScience.disableJupyterAutoStart": true,
-    "python.logging.level": "debug"
+    "python.logging.level": "debug",
+    "python.dataScience.alwaysTrustNotebooks": true // In UI tests we don't want prompts for `Do you want to trust thie nb...`
 }