add test

tests/build.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+dir=$(dirname $(realpath $0))
+export GO111MODULE=on
+export GOPROXY=direct
+export GOPATH=${dir}/buildenv/deps
+
+mkdir -p ${dir}/buildenv
+chmod -R 755 ${dir}/buildenv
+rm -rf ${dir}/buildenv
+
+mkdir -p "${dir}/buildenv/src"
+mkdir -p ${GOPATH}/src
+mkdir -p ${dir}/bin
+
+cp -r "${dir}/main.go" "${dir}/buildenv/src/main.go"
+
+cd ${dir}/buildenv
+
+go mod init src
+go mod tidy
+
+go build -o "${dir}/bin/test" "src/main.go"