--- /dev/null
+# Include in your test script like this:
+#
+# #!/usr/bin/env bash
+# . ./wvtest-bup.sh
+
+. ./wvtest.sh
+
+_wvtop="$(pwd)"
+
+wvmktempdir ()
+(
+ local script_name="$(basename $0)"
+ set -e -o pipefail
+ mkdir -p "$_wvtop/t/tmp"
+ echo "$(mktemp -d "$_wvtop/t/tmp/$script_name-XXXXXXX")"
+)