Prepare to test SSL sample programs

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/opt-testcases/sample.sh b/tests/opt-testcases/sample.sh
new file mode 100644
index 0000000..05db6b8
--- /dev/null
+++ b/tests/opt-testcases/sample.sh
@@ -0,0 +1,6 @@
+# Test that SSL sample programs can interoperate with OpenSSL and GnuTLS.
+
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+: ${PROGRAMS_DIR:=../programs/ssl}