[short] skip

# Allow (cached) downloads for -mod=readonly.
env GO111MODULE=on
env GOPATH=$WORK/gopath1
cd $WORK/x
go mod edit -fmt
go list -mod=readonly
env GOPROXY=file:///nonexist
go list
grep v1.5.1 $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/list

# Use download cache as file:/// proxy.
env GOPATH=$WORK/gopath2
[GOOS:windows] env GOPROXY=file:///C:/nonexist
[!GOOS:windows] env GOPROXY=file:///nonexist
! go list

go list -m -versions rsc.io/breaker
stdout '^rsc.io/breaker v1.0.0 v2.0.0\+incompatible$'
go mod download rsc.io/breaker@v1.0.0
! grep '^go' $GOPATH/pkg/mod/cache/download/rsc.io/breaker/@v/v1.0.0.mod
go mod download rsc.io/breaker@v2.0.0+incompatible
! grep '^go' $GOPATH/pkg/mod/cache/download/rsc.io/breaker/@v/v2.0.0+incompatible.mod

# Delete downloaded .zip files.
go clean -modcache

# Check for updates.

go install rsc.io/fortune@v1.0.0
stderr '^go: found rsc.io/quote in rsc.io/quote v1.5.2$'
exists $GOPATH/bin/fortune$GOEXE
! exists $GOPATH/pkg/mod/rsc.io/fortune@v1.0.0/go.mod # no go.mod file
go version -m $GOPATH/bin/fortune$GOEXE
stdout '^\tdep\trsc.io/quote\tv1.5.2\t' # latest version of fortune's dependency
rm $GOPATH/bin


# 'go install dir@version' works like a normal 'go install' command if

	}

	// Diagnose common mistake: GOPATH==GOROOT.
	// This setting is equivalent to not setting GOPATH at all,
	// which is not what most people want when they do it.
	if gopath := cfg.BuildContext.GOPATH; filepath.Clean(gopath) == filepath.Clean(cfg.GOROOT) {
		fmt.Fprintf(os.Stderr, "warning: GOPATH set to GOROOT (%s) has no effect\n", gopath)
	} else {
		for _, p := range filepath.SplitList(gopath) {

cp go.mod.orig go.mod
go get rsc.io/fortune@v1.0.0 # note: must use test proxy, does not exist in real world
rm $GOPATH/pkg/mod/cache/download/sumdb # rm sumdb cache but NOT package download cache
rm go.sum

# can fetch by explicit URL
cp go.mod.orig go.mod
env GOSUMDB=$sumdb' '$proxy/sumdb-direct
go get rsc.io/fortune@v1.0.0
rm $GOPATH/pkg/mod/cache/download/sumdb
rm go.sum

# direct access fails (because localhost.localdev does not exist)

[short] skip

go build net
! stale net

symlink new -> $GOROOT
env OLDGOROOT=$GOROOT
env GOROOT=$WORK${/}gopath${/}src${/}new
go env GOROOT
stdout $WORK[\\/]gopath[\\/]src[\\/]new
cd new
! stale net

# Add a control case to check that std is
# stale with an empty cache
env GOCACHE=$WORK${/}gopath${/}cache

exec ./example.test.exe -test.v
stdout '^GOROOT '$TESTGO_GOROOT'$'
stdout '^runtime '$TESTGO_GOROOT${/}src${/}runtime'$'

! exec ./example.test-trimpath.exe -test.v
stdout '^GOROOT $'
stderr 'cannot find package "runtime" in any of:\n\t\(\$GOROOT not set\)\n\t'$WORK${/}gopath${/}src${/}runtime' \(from \$GOPATH\)$'

! exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.mod
! exists go.sum

# If go.sum exists but contains hashes from an algorithm we don't know about,
# we should see the same error.
cp go.sum.h2only go.sum
! go list -m all
stderr '^go: rsc.io/quote@v1.5.2: missing go.sum entry for go.mod file; to add it:\n\tgo mod download rsc.io/quote$'
! exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.mod

		}
	}

	// We need a writable GOPATH in which to run the tests.
	// Construct one in a temporary directory.
	var err error
	GOPATH, err = os.MkdirTemp("", "carchive_test")
	if err != nil {
		log.Panic(err)
	}
	if testWork {
		log.Println(GOPATH)
	} else {
		defer os.RemoveAll(GOPATH)
	}
	os.Setenv("GOPATH", GOPATH)

	// Copy testdata into GOPATH/src/testarchive, along with a go.mod file

! go get ..
stderr '^go: \.\. \('$WORK'[/\\]gopath\) is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get $WORK
stderr '^go: '$WORK' is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get ../...
stderr '^go: \.\./\.\.\. \('$WORK'[/\\]gopath([/\\]...)?\) is not within module rooted at '$WORK'[/\\]gopath[/\\]src$'
! go get $WORK/...