From 6938a7122fba36815e08c7bdd50dd58ba4728251 Mon Sep 17 00:00:00 2001
From: David Brochart <david.brochart@gmail.com>
Date: Wed, 20 May 2020 12:32:33 +0200
Subject: [PATCH 1/2] Don't return resources

---
 voila/execute.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/voila/execute.py b/voila/execute.py
index 177e39f34..032196266 100644
--- a/voila/execute.py
+++ b/voila/execute.py
@@ -157,7 +157,7 @@ async def execute_cell(self, cell, resources, cell_index, store_history=True):
             raise e
         except CellExecutionError as e:
             self.log.error(e)
-            result = (cell, resources)
+            result = cell
 
         # Strip errors and traceback if not in debug mode
         if should_strip_error(self.config):

From 19b711c00bcac72dffde7ef677201e254180e66e Mon Sep 17 00:00:00 2001
From: David Brochart <david.brochart@gmail.com>
Date: Wed, 20 May 2020 17:26:41 +0200
Subject: [PATCH 2/2] Add test

---
 tests/app/syntax_error_test.py     | 17 +++++++++++++++
 tests/notebooks/syntax_error.ipynb | 34 ++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 tests/app/syntax_error_test.py
 create mode 100644 tests/notebooks/syntax_error.ipynb

diff --git a/tests/app/syntax_error_test.py b/tests/app/syntax_error_test.py
new file mode 100644
index 000000000..e395f7a74
--- /dev/null
+++ b/tests/app/syntax_error_test.py
@@ -0,0 +1,17 @@
+import pytest
+
+
+@pytest.fixture
+def syntax_error_notebook(base_url):
+    return base_url + "voila/render/syntax_error.ipynb"
+
+
+@pytest.fixture
+def voila_args(notebook_directory, voila_args_extra):
+    return ['--VoilaTest.root_dir=%r' % notebook_directory] + voila_args_extra
+
+
+async def test_syntax_error(capsys, http_server_client, syntax_error_notebook):
+    response = await http_server_client.fetch(syntax_error_notebook)
+    assert response.code == 200
+    assert 'There was an error when executing cell' in response.body.decode('utf-8')
diff --git a/tests/notebooks/syntax_error.ipynb b/tests/notebooks/syntax_error.ipynb
new file mode 100644
index 000000000..a26cb8a30
--- /dev/null
+++ b/tests/notebooks/syntax_error.ipynb
@@ -0,0 +1,34 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "this is a syntax error"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.2"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}