去测试foo-找不到软件包foo

I have this directory structure:

https://github.com/netjet-chrome-extension/netjet-mono/tree/master/examples/projects/golang

I try to run test.sh, which consists of:

#!/usr/bin/env bash

cd "$(dirname "$BASH_SOURCE")"
export GOPATH="$PWD"
go test sourcegraph_go_selenium

but I get this error:

can't load package: package sourcegraph_go_selenium: cannot find package "sourcegraph_go_selenium" in any of: /usr/lib/go-1.10/src/sourcegraph_go_selenium (from $GOROOT) /home/oleg/codes/netjet/netjet-mono/examples/projects/golang/src/sourcegraph_go_selenium (from $GOPATH)

GOPATH is set correctly, so why can't it find the sourcegraph_go_selenium package? this package is right there, in src/sourcegraph_go_selenium...?

Try this:

go test sourcegraph_go_selenium/...