)

var (
	proxyAddr = flag.String("proxy", "", "run proxy on this network address instead of running any tests")
	proxyURL  string
)

var proxyOnce sync.Once

// StartProxy starts the Go module proxy running on *proxyAddr (like "localhost:1234")
// and sets proxyURL to the GOPROXY setting to use to access the proxy.
// Subsequent calls are no-ops.
//
// The proxy serves from testdata/mod. See testdata/mod/README.

env GO111MODULE=on

[!net:golang.org] skip
[!net:proxy.golang.org] skip

env GOPROXY=https://proxy.golang.org,direct
env GOSUMDB=off

go get -x -v golang.org/x/tools/cmd/goimports
stderr '# get https://proxy.golang.org/golang.org/x/tools/@v/list'
! stderr '# get https://golang.org'

-- go.mod --
module m

[exec:bzr] skip 'tests NOT having bzr'
[!net:launchpad.net] skip

env GO111MODULE=on
env GOPROXY=direct

cd empty
! go get launchpad.net/gocheck
stderr '"bzr": executable file not found'
cd ..

# 1.11 used to give the cryptic error "cannot find module for path" here, but
# only for a main package.
cd main
! go build -mod=mod
stderr '"bzr": executable file not found'
cd ..

-- empty/go.mod --
module m
-- main/go.mod --

		// with a good error message.

		// Exception #1: using GOPROXY=file:// to test a distpack.
		if strings.HasPrefix(cfg.GOPROXY, "file://") && !strings.ContainsAny(cfg.GOPROXY, ",|") {
			must = false
		}
		// Exception #2: the Go proxy+checksum database cannot check itself
		// while doing the initial download.
		if strings.Contains(os.Getenv("GIT_HTTP_USER_AGENT"), "proxy.golang.org") {
			must = false
		}

	GOBIN
	GOCACHE
	GOCACHEPROG
	GOENV
	GOEXE
	GOEXPERIMENT
	GOFLAGS
	GOGCCFLAGS
	GOHOSTARCH
	GOHOSTOS
	GOINSECURE
	GOMIPS
	GOMIPS64
	GOMODCACHE
	GONOPROXY
	GONOSUMDB
	GOOS
	GOPATH
	GOPPC64
	GOPRIVATE
	GOPROXY
	GORISCV64
	GOROOT
	GOSUMDB
	GOTMPDIR
	GOTOOLCHAIN
	GOTOOLDIR
	GOVCS
	GOWASM
	GOWORK
	GO_EXTLINK_ENABLED
	PKG_CONFIG

# golang.org/issue/13037: 'go get' was not parsing <meta> tags in 404 served over HTTPS.

[!net:bazil.org] skip
[!git] skip

env GONOSUMDB=bazil.org,github.com,golang.org
env GO111MODULE=on
env GOPROXY=direct
go get bazil.org/fuse/fs/fstestutil


-- go.mod --
module m

[short] skip
[!git] skip

env GO111MODULE=on
env GOPROXY=direct
env GOSUMDB=off

# golang.org/issue/34383: if a module path ends in a major-version suffix,
# ensure that 'direct' mode can resolve the package to a module.

go get vcs-test.golang.org/git/v3pkg.git/v3@v3.0.0

go list -m vcs-test.golang.org/git/v3pkg.git/v3
stdout '^vcs-test.golang.org/git/v3pkg.git/v3 v3.0.0$'

go get vcs-test.golang.org/git/empty-v2-without-v1.git/v2@v2.0.0

env GO111MODULE=on
env GOPROXY=direct

# Testing that git export-subst is disabled
[!net:github.com] skip
[!git] skip
go build

-- x.go --
package x

import _ "github.com/jasonkeene/export-subst"

-- go.mod --
module x

require github.com/jasonkeene/export-subst v0.0.0-20180927204031-5845945ec626

-- go.sum --

# subgroups could not be fetched because the server returned bogus go-import
# tags for prefixes of the module path.

[short] skip
[!git] skip

env GO111MODULE=on
env GOPROXY=direct
env GOSUMDB=off

! go mod download vcs-test.golang.org/go/missingrepo/missingrepo-git@latest
stderr 'vcs-test.golang.org/go/missingrepo/missingrepo-git: git ls-remote .*: exit status .*'

env GO111MODULE=on
env GOPROXY=direct
env GOSUMDB=off
[!net:golang.org] skip
[!git] skip

# fetch commit hash reachable from refs/heads/* and refs/tags/* is OK
go list -m golang.org/x/time@8be79e1e0910c292df4e79c241bb7e8f7e725959 # on master branch

# fetch other commit hash, even with a non-standard ref, is not OK
! go list -m golang.org/x/time@334d83c35137ac2b376c1dc3e4c7733791855a3a # refs/changes/24/41624/3
stderr 'unknown revision'