refine test for https://github.com/microsoft/vscode/issues/106657 and document...

refine test for https://github.com/microsoft/vscode/issues/106657 and document issue with fragments and the editor opener

extensions/vscode-notebook-tests/src/notebook.test.ts

@@ -1240,10 +1240,29 @@ suite('regression', () => {
 		assert.strictEqual(vscode.notebook.activeNotebookEditor, undefined);
 
 		// opening a cell-uri opens a notebook editor
-		await vscode.commands.executeCommand('vscode.open', cell.uri);
+		await vscode.commands.executeCommand('vscode.open', cell.uri, vscode.ViewColumn.Active);
 
 		assert.strictEqual(!!vscode.notebook.activeNotebookEditor, true);
-		// assert.strictEqual(vscode.notebook.activeNotebookEditor?.document.uri.toString(), resource.toString());
+		assert.strictEqual(vscode.notebook.activeNotebookEditor?.document.uri.toString(), resource.toString());
+	});
+
+	test('Cannot open notebook from cell-uri with vscode.open-command', async function () {
+		this.skip();
+		assertInitalState();
+		const resource = await createRandomFile('', undefined, 'first', '.vsctestnb');
+		await vscode.commands.executeCommand('vscode.openWith', resource, 'notebookCoreTest');
+
+		const document = vscode.notebook.activeNotebookEditor?.document!;
+		const [cell] = document.cells;
+
+		await saveAllFilesAndCloseAll(document.uri);
+		assert.strictEqual(vscode.notebook.activeNotebookEditor, undefined);
+
+		// BUG is that the editor opener (https://github.com/microsoft/vscode/blob/8e7877bdc442f1e83a7fec51920d82b696139129/src/vs/editor/browser/services/openerService.ts#L69)
+		// removes the fragment if it matches something numeric. For notebooks that's not wanted...
+		await vscode.commands.executeCommand('vscode.open', cell.uri);
+
+		assert.strictEqual(vscode.notebook.activeNotebookEditor?.document.uri.toString(), resource.toString());
 	});
 
 	test('#97830, #97764. Support switch to other editor types', async function () {