From b8394471ecea8515a93ec07fe9533d794e1e9c57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9gis=20Behmo?= <regis@behmo.com>
Date: Mon, 15 Mar 2021 23:26:38 +0100
Subject: [PATCH] feat: catch errors when writing a file where a directory
 exists

This error sometimes happens when developing new plugins.
---
 tutor/utils.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tutor/utils.py b/tutor/utils.py
index a7cb7cb..aa81ab4 100644
--- a/tutor/utils.py
+++ b/tutor/utils.py
@@ -43,6 +43,18 @@ def ensure_file_directory_exists(path: str) -> None:
     Create file's base directory if it does not exist.
     """
     directory = os.path.dirname(path)
+    if os.path.isfile(directory):
+        raise exceptions.TutorError(
+            "Attempting to create a directory, but a file with the same name already exists: {}".format(
+                directory
+            )
+        )
+    if os.path.isdir(path):
+        raise exceptions.TutorError(
+            "Attempting to write to a file, but a directory with the same name already exists: {}".format(
+                directory
+            )
+        )
     if not os.path.exists(directory):
         os.makedirs(directory)