--- /dev/null
+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+check_expected (IGNORE_EXIT_CODES => 1, [<<'EOF']);
+(sm-seq-block) begin
+(sm-seq-block) create "noodle"
+(sm-seq-block) open "noodle"
+(sm-seq-block) writing "noodle"
+(sm-seq-block) close "noodle"
+(sm-seq-block) open "noodle" for verification
+(sm-seq-block) verified contents of "noodle"
+(sm-seq-block) close "noodle"
+(sm-seq-block) end
+EOF