/usr/share/gocode/ is in golang-github-juju-testing-dev 0.0~git20170608.2fe0e88-3ubuntu1.
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/usr/share/gocode/src/
/usr/share/gocode/src/github.com/
/usr/share/gocode/src/github.com/juju/
/usr/share/gocode/src/github.com/juju/testing/
/usr/share/gocode/src/github.com/juju/testing/checkers/
/usr/share/gocode/src/github.com/juju/testing/checkers/bool.go
/usr/share/gocode/src/github.com/juju/testing/checkers/bool_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/checker.go
/usr/share/gocode/src/github.com/juju/testing/checkers/checker_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/codec.go
/usr/share/gocode/src/github.com/juju/testing/checkers/codec_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/deepequal.go
/usr/share/gocode/src/github.com/juju/testing/checkers/deepequal_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/file.go
/usr/share/gocode/src/github.com/juju/testing/checkers/file_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/log.go
/usr/share/gocode/src/github.com/juju/testing/checkers/log_test.go
/usr/share/gocode/src/github.com/juju/testing/checkers/relop.go
/usr/share/gocode/src/github.com/juju/testing/checkers/relop_test.go
/usr/share/gocode/src/github.com/juju/testing/cleanup.go
/usr/share/gocode/src/github.com/juju/testing/cleanup_test.go
/usr/share/gocode/src/github.com/juju/testing/clock.go
/usr/share/gocode/src/github.com/juju/testing/clock_test.go
/usr/share/gocode/src/github.com/juju/testing/cmd.go
/usr/share/gocode/src/github.com/juju/testing/cmd_test.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/
/usr/share/gocode/src/github.com/juju/testing/filetesting/filetesting.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/filetesting_test.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/isnotexist_test.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/isnotexist_unix.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/isnotexist_windows.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/package_test.go
/usr/share/gocode/src/github.com/juju/testing/filetesting/stub.go
/usr/share/gocode/src/github.com/juju/testing/goversion12.go
/usr/share/gocode/src/github.com/juju/testing/goversion13.go
/usr/share/gocode/src/github.com/juju/testing/goversion14.go
/usr/share/gocode/src/github.com/juju/testing/goversion15.go
/usr/share/gocode/src/github.com/juju/testing/home.go
/usr/share/gocode/src/github.com/juju/testing/home_test.go
/usr/share/gocode/src/github.com/juju/testing/http.go
/usr/share/gocode/src/github.com/juju/testing/httptesting/
/usr/share/gocode/src/github.com/juju/testing/httptesting/http.go
/usr/share/gocode/src/github.com/juju/testing/httptesting/http_test.go
/usr/share/gocode/src/github.com/juju/testing/httptesting/package_test.go
/usr/share/gocode/src/github.com/juju/testing/imports.go
/usr/share/gocode/src/github.com/juju/testing/imports_test.go
/usr/share/gocode/src/github.com/juju/testing/isolation.go
/usr/share/gocode/src/github.com/juju/testing/log.go
/usr/share/gocode/src/github.com/juju/testing/log_test.go
/usr/share/gocode/src/github.com/juju/testing/mgo.go
/usr/share/gocode/src/github.com/juju/testing/mgo_test.go
/usr/share/gocode/src/github.com/juju/testing/mgo_unix.go
/usr/share/gocode/src/github.com/juju/testing/mgo_windows.go
/usr/share/gocode/src/github.com/juju/testing/mock_example_test.go
/usr/share/gocode/src/github.com/juju/testing/mocker.go
/usr/share/gocode/src/github.com/juju/testing/norace.go
/usr/share/gocode/src/github.com/juju/testing/osenv.go
/usr/share/gocode/src/github.com/juju/testing/osenv_test.go
/usr/share/gocode/src/github.com/juju/testing/package_test.go
/usr/share/gocode/src/github.com/juju/testing/patch.go
/usr/share/gocode/src/github.com/juju/testing/patch_test.go
/usr/share/gocode/src/github.com/juju/testing/race.go
/usr/share/gocode/src/github.com/juju/testing/stub.go
/usr/share/gocode/src/github.com/juju/testing/stub_test.go
/usr/share/gocode/src/github.com/juju/testing/tcpproxy.go
/usr/share/gocode/src/github.com/juju/testing/tcpproxy_test.go