[client] tests: fix release build of font test

client/tests/test.h

@@ -0,0 +1,38 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef LG_CLIENT_TEST_H
+#define LG_CLIENT_TEST_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define CHECK(x) \
+  do \
+  { \
+    if (!(x)) \
+    { \
+      fprintf(stderr, "check failed at %s:%d: %s\n", __FILE__, __LINE__, #x); \
+      exit(EXIT_FAILURE); \
+    } \
+  } \
+  while (0)
+
+#endif