cmd.Env = append(cmd.Env, "PWD="+cmd.Dir)
		}
		if tempDirIsGOPATH {
			cmd.Env = append(cmd.Env, "GOPATH="+tempDir)
		}
		cmd.Env = append(cmd.Env, "STDLIB_IMPORTCFG="+stdlibImportcfgFile())
		cmd.Env = append(cmd.Env, runenv...)

		var err error

		if tim != 0 {
			err = cmd.Start()
			// This command-timeout code adapted from cmd/go/test.go

# it writes the bumped go version, not the max of the used modules.
env TESTGO_VERSION=go1.21
env TESTGO_VERSION_SWITCH=switch
rm go.work
env GOTOOLCHAIN=local
! go work init ./m1_22_0
stderr '^go: m1_22_0'${/}'go.mod requires go >= 1.22.0 \(running go 1.21; GOTOOLCHAIN=local\)$'
env GOTOOLCHAIN=auto
go work init ./m1_22_0
stderr '^go: m1_22_0'${/}'go.mod requires go >= 1.22.0; switching to go1.22.9$'

	MustHaveDebugOptionsSupport(t)

	testenv.MustHaveExec(t)

	env := "GODEBUG=" + options

	cmd := exec.Command(os.Args[0], "-test.run=^"+test+"$")
	cmd.Env = append(cmd.Env, env)

	output, err := cmd.CombinedOutput()
	if err != nil {
		t.Fatalf("%s with %s: run failed: %v output:\n%s\n",
			test, env, err, string(output))
	}
}

func TestDisableAllCapabilities(t *testing.T) {

	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/env"
)

var (
	PodNamespace      = env.RegisterStringVar("POD_NAMESPACE", "", "pod's namespace").Get()
	SystemNamespace   = env.RegisterStringVar("SYSTEM_NAMESPACE", constants.IstioSystemNamespace, "istio system namespace").Get()
	PodName           = env.RegisterStringVar("POD_NAME", "", "").Get()
	NodeName          = env.RegisterStringVar("NODE_NAME", "", "").Get()

func TestBind(t *testing.T) {
	type Options struct {
		A, B, C string
		Env     string
		Bool    bool
	}
	opts := Options{
		B: "b-def",
	}
	test.SetEnvForTest(t, "TEST_ENV", "from-env")
	fs := pflag.NewFlagSet("test", pflag.ContinueOnError)
	Bind(fs, "a", "", "desc", &opts.A)
	Bind(fs, "bool", "", "desc", &opts.Bool)
	BindEnv(fs, "test-env", "", "desc", &opts.Env)
	fs.Set("a", "a-set")
	fs.Set("bool", "true")

	delay := env.Get(EnvDelayLegacy, "")
	if delay == "" {
		delay = env.Get(EnvDelay, kvs.GetWithDefault(Delay, DefaultKVS))
	}
	cfg.Delay, err = strconv.ParseFloat(delay, 64)
	if err != nil {
		return err
	}
	maxWait := env.Get(EnvMaxWaitLegacy, "")
	if maxWait == "" {
		maxWait = env.Get(EnvMaxWait, kvs.GetWithDefault(MaxWait, DefaultKVS))
	}

handle git

env GIT_AUTHOR_NAME='Bryan C. Mills'
env GIT_AUTHOR_EMAIL='******@****.***'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

git init

at 2019-10-07T14:15:32-04:00
git add go.mod
git commit -m 'add go.mod file without go source files'
git branch -m master
git tag v2.0.0

git log --oneline --decorate=short
cmp stdout .git-log

-- .git-log --

# Test go commands with no module.
env GO111MODULE=on

# go mod edit fails unless given explicit mod file argument
! go mod edit -json
go mod edit -json x.mod

# bug succeeds
[exec:echo] env BROWSER=echo
[exec:echo] go bug

# commands that load the package in the current directory fail
! go build
! go fmt
! go generate
! go get
! go install
! go list
! go run
! go test
! go vet

		},
	}

	configStore := memory.Make(collections.Pilot)

	env := model.NewEnvironment()
	env.ServiceDiscovery = serviceDiscovery
	env.ConfigStore = configStore
	env.Watcher = mesh.NewFixedWatcher(meshConfig)

	pushContext := model.NewPushContext()
	env.Init()
	_ = pushContext.InitContext(env, nil, nil)
	env.SetPushContext(pushContext)
	pushContext.SetDestinationRulesForTesting([]config.Config{
		{

# go env should caches compiler results
go env
go env -x