pythonGH-106584: Check buffers before seek

EliseevEgor · Jul 11, 2023 · 6313c98 · 6313c98
1 parent 1ab5cfa
commit 6313c98
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/Lib/unittest/result.py b/Lib/unittest/result.py
@@ -97,10 +97,12 @@ def _restoreStdout(self):
 
             sys.stdout = self._original_stdout
             sys.stderr = self._original_stderr
-            self._stdout_buffer.seek(0)
-            self._stdout_buffer.truncate()
-            self._stderr_buffer.seek(0)
-            self._stderr_buffer.truncate()
+            if self._stdout_buffer is not None:
+                self._stdout_buffer.seek(0)
+                self._stdout_buffer.truncate()
+            if self._stderr_buffer is not None:
+                self._stderr_buffer.seek(0)
+                self._stderr_buffer.truncate()
 
     def stopTestRun(self):
         """Called once after all tests are executed.