cp go.sum saved.sum


# Download from proxy.golang.org with go.sum entry already.
# Use 'go list' instead of 'go get' since the latter may download extra go.mod
# files not listed in go.sum.

go clean -modcache
env GOSUMDB=sum.golang.org
env GOPROXY=https://proxy.golang.org,direct

go list -x -m all  # Download go.mod files.
! stderr github
stderr proxy.golang.org/rsc.io/quote
! stderr sum.golang.org/tile

# Explicitly requesting that same version should succeed, fetching additional
# history for the requested commit as needed in order to validate the
# pseudo-version base.
go clean -modcache
cp go.mod.orig go.mod
go get -x vcs-test.golang.org/git/issue47650.git/cmd/issue47650@v0.1.1-0.20210811175200-21535ef346c3
stderr '^go: added vcs-test.golang.org/git/issue47650.git v0.1.1-0.20210811175200-21535ef346c3$'

# Now remove the module dependencies from the module cache.
# Because one module upgrades a transitive dependency needed by another,
# listing the modules in the workspace should error out.

go clean -modcache
env GOPROXY=off
! go list -m all
stderr '^go: rsc.io/sampler@v1.3.0: module lookup disabled by GOPROXY=off$'

-- example.go --
package example

import _ "rsc.io/sampler"
-- go.mod --
module example

! exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.0.mod
grep '^rsc\.io/quote v1\.5\.2/go\.mod h1:' go.work.sum
grep '^rsc\.io/quote v1\.5\.2 h1:' go.work.sum

go clean -modcache
rm go.work.sum
go mod download
exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.info
exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.mod

cp stdout all.json

# clean the module cache, make sure that makes go mod download re-run git fetch, clean again
go clean -modcache
go mod download -x -json vcs-test.golang.org/git/hello.git@latest
stderr 'git( .*)* fetch'
go clean -modcache

# reuse go mod download vcstest/hello result
go mod download -reuse=hello.json -x -json vcs-test.golang.org/git/hello.git@latest
! stderr 'git( .*)* fetch'

stdout 1.18


# Even at go 1.20 or earlier, 'go mod tidy' shouldn't need go.mod files or
# checksums that it won't record.

go mod tidy -go=1.20
go clean -modcache  # Remove checksums from the module cache, so that only go.sum is used.

# Issue 60667: 'go list' without -mod=mod shouldn't report the checksums as
# dirty either.
go list -m -u all

env OLDSUMDB=$GOSUMDB

	}
	return f.Close()
}

// ReadCache reads cached lookups or tiles from
// GOPATH/pkg/mod/cache/download/sumdb,
// which will be deleted by "go clean -modcache".
func (*dbClient) ReadCache(file string) ([]byte, error) {
	targ := filepath.Join(cfg.GOMODCACHE, "cache/download/sumdb", file)
	data, err := lockedfile.Read(targ)
	// lockedfile.Write does not atomically create the file with contents.

	// Redirect the module cache to a fresh directory to avoid crosstalk, and make
	// it read/write so that the test can still clean it up easily when done.
	cfg.GOMODCACHE = filepath.Join(dir, "modcache")
	cfg.ModCacheRW = true

	m.Run()
	return nil
}

func testContext(t testing.TB) context.Context {
	w := newTestWriter(t)
	return cfg.WithBuildXWriter(context.Background(), w)
}

stderr '^go: go.mod file not found in current directory or any parent directory.$'
stderr '^\t''go get'' is no longer supported outside a module.$'

# 'go get' should not download anything.
go clean -modcache
! go get example.com/printversion@v1.0.0
stderr '^go: go.mod file not found in current directory or any parent directory.$'
stderr '^\t''go get'' is no longer supported outside a module.$'

	// go tool may complain.
	os.Setenv("GOPATH", pathf("%s/pkg/obj/gopath", goroot))

	// Set GOPROXY=off to avoid downloading modules to the modcache in
	// the GOPATH set above to be inside GOROOT. The modcache is read
	// only so if we downloaded to the modcache, we'd create readonly
	// files in GOROOT, which is undesirable. See #67463)
	os.Setenv("GOPROXY", "off")