--- /dev/null
+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+check_expected ([<<'EOF']);
+(create-exists) begin
+(create-exists) create quux.dat
+(create-exists) create warble.dat
+(create-exists) try to re-create quux.dat
+(create-exists) create baffle.dat
+(create-exists) try to re-create quux.dat
+(create-exists) end
+create-exists: exit(0)
+EOF