Add first test

tests/one.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -ueo pipefail
+
+SCRIPT_DIR=$(dirname $(readlink -f "$0"))
+DB_FILE="${SCRIPT_DIR}/test.db"
+
+setUp() {
+    tag init "$DB_FILE"
+}
+
+tearDown() {
+    [ -f "$DB_FILE" ] && rm "$DB_FILE"
+}
+
+
+testDbCreated() {
+    assertTrue "[[ -f \"$DB_FILE\" ]]"
+}
+
+. ../../shunit2/shunit2