1env GO111MODULE=off
2
3# As of Go 1.12, the module cache is required.
4
5# If none of the variables we use to locate GOCACHE are set, the cache is off
6# and we cannot build.
7env GOCACHE=
8env XDG_CACHE_HOME=
9env HOME=
10[GOOS:plan9] env home=
11[GOOS:windows] env LocalAppData=
12! go build -o triv triv.go
13stderr 'build cache is required, but could not be located: GOCACHE is not defined and .*'
14
15# If GOCACHE is set but is not an absolute path, and we cannot build.
16env GOCACHE=test
17! go build -o triv triv.go
18stderr 'build cache is required, but could not be located: GOCACHE is not an absolute path'
19
20# An explicit GOCACHE=off also disables builds.
21env GOCACHE=off
22! go build -o triv triv.go
23stderr 'build cache is disabled by GOCACHE=off'
24
25# If GOCACHE is set to an unwritable directory, we should diagnose it as such.
26[GOOS:windows] stop # Does not support unwritable directories.
27[root] skip # Can write to unwritable directories.
28
29mkdir $WORK/unwritable/home
30chmod 0555 $WORK/unwritable/home
31[!GOOS:plan9] env HOME=$WORK/unwritable/home
32[GOOS:plan9] env home=$WORK/unwritable/home
33
34env GOCACHE=$WORK/unwritable/home
35! go build -o triv triv.go
36stderr 'failed to initialize build cache.* permission denied'
37
38-- triv.go --
39package main
40func main() {}
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