add test for delete command

tests/delete.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+t="delete"
+
+# create tmp directory
+tmpdir="$(mktemp -d)"
+trap '{ rm -rf "${tmpdir}"; }' 0 2 3 15
+
+# input
+cp data/example.csv "${tmpdir}/${t}.csv"
+
+# assertion (empty file)
+cat << "DATA" > "${tmpdir}/${t}.assert"
+DATA
+
+# action
+cd "${tmpdir}" || exit 1
+orcli import csv "${t}.csv"
+orcli list | grep "${t} csv"
+orcli delete "${t} csv"
+orcli list | grep "${t} csv" > "${t}.output" || exit 0
+
+# test
+diff -u "${t}.assert" "${t}.output"