Cross Reference: /prebuilts/go/linux-x86/src/cmd/go/testdata/testimport

`Name`	`Date`	`Size`
Up to higher level directory
`p.go`	21-Aug-2018	`37`
`p1/`	21-Aug-2018
`p2/`	21-Aug-2018
`p_test.go`	21-Aug-2018	`110`
`x_test.go`	21-Aug-2018	`136`