From ec87fe580ca668e4985ad1f213fa4ee2d783dfc6 Mon Sep 17 00:00:00 2001
From: jhendersonHDF <jhenderson@hdfgroup.org>
Date: Sat, 26 Aug 2023 00:42:19 -0500
Subject: [PATCH] Output stderr file in CMake testing on failure (#3431)

---
 config/cmake/runTest.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/config/cmake/runTest.cmake b/config/cmake/runTest.cmake
index 0d0542450bd..1304d36735b 100644
--- a/config/cmake/runTest.cmake
+++ b/config/cmake/runTest.cmake
@@ -122,6 +122,10 @@ if (NOT TEST_RESULT EQUAL TEST_EXPECT)
       file (READ ${TEST_FOLDER}/${TEST_OUTPUT} TEST_STREAM)
       message (STATUS "Output :\n${TEST_STREAM}")
     endif ()
+    if (EXISTS "${TEST_FOLDER}/${TEST_OUTPUT}.err")
+      file (READ ${TEST_FOLDER}/${TEST_OUTPUT}.err TEST_STREAM)
+      message (STATUS "Error Output :\n${TEST_STREAM}")
+    endif ()
   endif ()
   message (FATAL_ERROR "Failed: Test program ${TEST_PROGRAM} exited != ${TEST_EXPECT}.\n${TEST_ERROR}")
 endif ()