...
Run Format

Source file src/runtime/env_test.go

Documentation: runtime

  // Copyright 2015 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package runtime_test
  
  import (
  	"runtime"
  	"syscall"
  	"testing"
  )
  
  func TestFixedGOROOT(t *testing.T) {
  	if runtime.GOOS == "plan9" {
  		t.Skipf("skipping plan9, it is inconsistent by allowing GOROOT to be updated by Setenv")
  	}
  
  	// Restore both the real GOROOT environment variable, and runtime's copies:
  	if orig, ok := syscall.Getenv("GOROOT"); ok {
  		defer syscall.Setenv("GOROOT", orig)
  	} else {
  		defer syscall.Unsetenv("GOROOT")
  	}
  	envs := runtime.Envs()
  	oldenvs := append([]string{}, envs...)
  	defer runtime.SetEnvs(oldenvs)
  
  	// attempt to reuse existing envs backing array.
  	want := runtime.GOROOT()
  	runtime.SetEnvs(append(envs[:0], "GOROOT="+want))
  
  	if got := runtime.GOROOT(); got != want {
  		t.Errorf(`initial runtime.GOROOT()=%q, want %q`, got, want)
  	}
  	if err := syscall.Setenv("GOROOT", "/os"); err != nil {
  		t.Fatal(err)
  	}
  	if got := runtime.GOROOT(); got != want {
  		t.Errorf(`after setenv runtime.GOROOT()=%q, want %q`, got, want)
  	}
  	if err := syscall.Unsetenv("GOROOT"); err != nil {
  		t.Fatal(err)
  	}
  	if got := runtime.GOROOT(); got != want {
  		t.Errorf(`after unsetenv runtime.GOROOT()=%q, want %q`, got, want)
  	}
  }
  

View as plain text