test: Add test for option "version"

Signed-off-by: Eugene Loh <eugene.loh@oracle.com>
Reviewed-by: Kris Van Hees <kris.van.hees@oracle.com>

test/unittest/options/err.version.d

@@ -0,0 +1,17 @@
+/*
+ * Oracle Linux DTrace.
+ * Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
+ * Licensed under the Universal Permissive License v 1.0 as shown at
+ * http://oss.oracle.com/licenses/upl.
+ */
+
+/*
+ * ASSERTION: The -xversion option works.
+ *
+ * SECTION: Options and Tunables/Consumer Options
+ */
+
+/* @@runtest-opts: -xversion=99.1 */
+BEGIN {
+	exit(0);
+}

test/unittest/options/err.version.r

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+-- @@stderr --
+dtrace: failed to set -x version: Requested version is not supported by compiler

test/unittest/options/tst.version.r

@@ -0,0 +1,2 @@
+version is 2.0
+

test/unittest/options/tst.version.sh

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+#!/bin/bash
+#
+# Oracle Linux DTrace.
+# Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
+# Licensed under the Universal Permissive License v 1.0 as shown at
+# http://oss.oracle.com/licenses/upl.
+#
+
+dtrace=$1
+
+myversion=`$dtrace $dt_flags -V | awk '{ print $NF }'`
+echo version is $myversion
+
+$dtrace $dt_flags -xversion=$myversion -qn 'BEGIN { exit(0) }'
+exit $?