tree 14969774c25a2bcb106ac4eeb21183e1f8cd606c
parent 6f2254e6514eab344f87b56d54f70c5682025104
author Hana <hyangah@gmail.com> 1634921557 -0400
committer Hyang-Ah Hana Kim <hyangah@gmail.com> 1634933356 +0000

go/packages/packagestest: skip nested module directories in copying

MustCopyFileTree is used to construct a module representation based on
a real directory tree and its output consumers (e.g. Export) assume the
output contains only files that belong to the module. If the real
directory contains nested module directories, they need to be trimmed
to satisfy the assumption.

This CL implements this trimming logic - a directory containing go.mod
is excluded from copying if the directory is not the top-level directory.

Change-Id: Ib09d4d74e120b502e338a021042d4d5e00719f23
Reviewed-on: https://go-review.googlesource.com/c/tools/+/358037
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>