diff --git a/extensions/vscode-api-tests/src/singlefolder-tests/ipynb.test.ts b/extensions/vscode-api-tests/src/singlefolder-tests/ipynb.test.ts
new file mode 100644
index 00000000000..d4a1e2650c0
--- /dev/null
+++ b/extensions/vscode-api-tests/src/singlefolder-tests/ipynb.test.ts
@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as assert from 'assert';
+import 'mocha';
+import * as vscode from 'vscode';
+
+suite('ipynb NotebookSerializer', function () {
+	test.only('Can open an ipynb notebook', async () => {
+		assert.ok(vscode.workspace.workspaceFolders);
+		const workspace = vscode.workspace.workspaceFolders[0];
+		const uri = vscode.Uri.joinPath(workspace.uri, 'test.ipynb');
+		console.log(uri);
+		const notebook = await vscode.workspace.openNotebookDocument(uri);
+		await vscode.window.showNotebookDocument(notebook);
+
+		const notebookEditor = vscode.window.activeNotebookEditor;
+		assert.ok(notebookEditor);
+
+		assert.strictEqual(notebookEditor.document.cellCount, 2);
+		assert.strictEqual(notebookEditor.document.cellAt(0).kind, vscode.NotebookCellKind.Markup);
+		assert.strictEqual(notebookEditor.document.cellAt(1).kind, vscode.NotebookCellKind.Code);
+		assert.strictEqual(notebookEditor.document.cellAt(1).outputs.length, 1);
+	});
+});
diff --git a/extensions/vscode-api-tests/testWorkspace/test.ipynb b/extensions/vscode-api-tests/testWorkspace/test.ipynb
new file mode 100644
index 00000000000..9b0d1735596
--- /dev/null
+++ b/extensions/vscode-api-tests/testWorkspace/test.ipynb
@@ -0,0 +1,53 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "source": [
+    "## Header"
+   ],
+   "metadata": {}
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "source": [
+    "print('hello 1')\n",
+    "print('hello 2')"
+   ],
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "hello 1\n",
+      "hello 2\n"
+     ]
+    }
+   ],
+   "metadata": {}
+  }
+ ],
+ "metadata": {
+  "interpreter": {
+   "hash": "815c6b7592bf74925ca002a1774bcf064bae9d6a27e7933fd9109275fb484258"
+  },
+  "kernelspec": {
+   "name": "python3",
+   "display_name": "Python 3.9.5 64-bit ('myvenv': venv)"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}
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