case: ghq.root unset
ok: ghq get github.com/a/b -> exit 0
ok: ghq create x -> exit 0
case: ghq.root another path
ok: ghq get github.com/a/b -> exit 0
ok: ghq rm x -> exit 0
case: ghq.root the shared root, by its real path
ok: ghq get --shallow --partial blobless github.com/a/b -> exit 0
ok: ghq list -> exit 0
ok: ghq create x -> exit 2
ok: ghq get github.com/a/fail github.com/a/b -> exit 3
case: a directory under the shared root names its repository
ok: ghq get -u . -> exit 0
ok: ghq get . -> exit 0
ok: ghq get /build/tmp.Bnsh9A9PkW/shared/github.com/o/r/sub -> exit 0
ok: ghq get /build/tmp.Bnsh9A9PkW/shared-link/github.com/o/r/sub -> exit 0
ok: ghq get /build/tmp.Bnsh9A9PkW/outside -> exit 2
ok: ghq get github.com/a/b /build/tmp.Bnsh9A9PkW/outside -> exit 2
ok: ghq get . -> exit 2
ok: ghq get /build/tmp.Bnsh9A9PkW/shared/github.com -> exit 2
case: a submodule's working tree names its superproject
ok: ghq get . -> exit 0
case: ghq-sync names the repository for a directory under ghq root
ok: ghq-sync -n -u . in sub -> would run: ghq get --shallow --partial blobless --no-recursive -P -u github.com/o/r
ok: ghq-sync -n -u . in mod/dir -> would run: ghq get --shallow --partial blobless --no-recursive -P -u github.com/o/r
case: ghq-sync --tags applies to fetch mode only
ok: ghq-sync --tags --deepen 1 -> exit 2
ok: ghq-sync --tags --full -> exit 2
case: GHQ_ROOT overrides git configuration
ok: ghq get github.com/a/b -> exit 0
case: writer unreachable fails, no fallback
ok: ghq get github.com/a/b -> exit 69