[3.11] gh-106368: Argument clinic tests: improve failure message when…

… tests in `ClinicExternalTests` fail (GH-107364) (#107366) gh-106368: Argument clinic tests: improve failure message when tests in `ClinicExternalTests` fail (GH-107364) (cherry picked from commit 76c26ea) Co-authored-by: Alex Waygood <[email protected]>
python · Jul 28, 2023 · 51b302e · 51b302e
1 parent f106254
commit 51b302e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Lib/test/test_clinic.py b/Lib/test/test_clinic.py
@@ -1306,7 +1306,7 @@ def _do_test(self, *args, expect_success=True):
         ) as proc:
             proc.wait()
             if expect_success and proc.returncode:
-                self.fail("".join(proc.stderr))
+                self.fail("".join([*proc.stdout, *proc.stderr]))
             stdout = proc.stdout.read()
             stderr = proc.stderr.read()
             # Clinic never writes to stderr.