Add support to match regex in ok tests

test/macros.cmake

@@ -68,11 +68,22 @@ function(ovni_test source)
         "${OVNI_TEST_NAME}"
       WORKING_DIRECTORY "${OVNI_TEST_BUILD_DIR}")
   else()
-    add_test(NAME "${OVNI_TEST_NAME}"
-      COMMAND
-        "${driver}"
-        "${OVNI_TEST_NAME}"
-      WORKING_DIRECTORY "${OVNI_TEST_BUILD_DIR}")
+    if(OVNI_TEST_REGEX)
+      # Custom error handler for ok too
+      add_test(NAME "${OVNI_TEST_NAME}"
+        COMMAND
+          "${OVNI_TEST_SOURCE_DIR}/match-ok.sh"
+          "${OVNI_TEST_REGEX}"
+          "${driver}"
+          "${OVNI_TEST_NAME}"
+        WORKING_DIRECTORY "${OVNI_TEST_BUILD_DIR}")
+    else()
+      add_test(NAME "${OVNI_TEST_NAME}"
+        COMMAND
+          "${driver}"
+          "${OVNI_TEST_NAME}"
+        WORKING_DIRECTORY "${OVNI_TEST_BUILD_DIR}")
+    endif()
   endif()
 
   set_tests_properties("${OVNI_TEST_NAME}"

test/match-ok.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+# Copyright (c) 2022 Barcelona Supercomputing Center (BSC)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# This script return 0 if and only if the given program returns zero
+# AND the regex matches the output
+
+# $1 = the regex as grep
+# $2... The program
+
+regex="$1"
+shift
+
+"${@}" 2>&1 | stdbuf -i0 -o0 tee /dev/stderr | grep -q "${regex}"
+
+rcprog=${PIPESTATUS[0]} rcgrep=${PIPESTATUS[2]}
+
+echo "rcprog='$rcprog' rcgrep='$rcgrep'"
+
+if [ "$rcprog" = 0 ] && [ "$rcgrep" = 0 ]; then
+  echo "ok: program succeded and grep matched the error line"
+  exit 0
+else
+  if [ "$rcprog" != 0 ]; then
+    echo "error: program exited with \"$rcprog\" rather than 0"
+  fi
+  if [ "$rcgrep" != 0 ]; then
+    echo "error: regex \"${regex}\" not matched"
+  fi
+  exit 1
+fi