libgo/go/syscall/syscall_test.go

   1 // Copyright 2013 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package syscall_test
   6
   7 import (
   8         "fmt"
   9         "internal/testenv"
  10         "os"
  11         "runtime"
  12         "syscall"
  13         "testing"
  14 )
  15
  16 func testSetGetenv(t *testing.T, key, value string) {
  17         err := syscall.Setenv(key, value)
  18         if err != nil {
  19                 t.Fatalf("Setenv failed to set %q: %v", value, err)
  20         }
  21         newvalue, found := syscall.Getenv(key)
  22         if !found {
  23                 t.Fatalf("Getenv failed to find %v variable (want value %q)", key, value)
  24         }
  25         if newvalue != value {
  26                 t.Fatalf("Getenv(%v) = %q; want %q", key, newvalue, value)
  27         }
  28 }
  29
  30 func TestEnv(t *testing.T) {
  31         testSetGetenv(t, "TESTENV", "AVALUE")
  32         // make sure TESTENV gets set to "", not deleted
  33         testSetGetenv(t, "TESTENV", "")
  34 }
  35
  36 func TestItoa(t *testing.T) {
  37         // Make most negative integer: 0x8000...
  38         i := 1
  39         for i<<1 != 0 {
  40                 i <<= 1
  41         }
  42         if i >= 0 {
  43                 t.Fatal("bad math")
  44         }
  45         s := syscall.Itoa(i)
  46         f := fmt.Sprint(i)
  47         if s != f {
  48                 t.Fatalf("itoa(%d) = %s, want %s", i, s, f)
  49         }
  50 }
  51
  52 // Check that permuting child process fds doesn't interfere with
  53 // reporting of fork/exec status. See Issue 14979.
  54 func TestExecErrPermutedFds(t *testing.T) {
  55         testenv.MustHaveExec(t)
  56
  57         attr := &os.ProcAttr{Files: []*os.File{os.Stdin, os.Stderr, os.Stdout}}
  58         _, err := os.StartProcess("/", []string{"/"}, attr)
  59         if err == nil {
  60                 t.Fatalf("StartProcess of invalid program returned err = nil")
  61         }
  62 }
  63
  64 func TestGettimeofday(t *testing.T) {
  65         if runtime.GOOS == "nacl" {
  66                 t.Skip("not implemented on nacl")
  67         }
  68         tv := &syscall.Timeval{}
  69         if err := syscall.Gettimeofday(tv); err != nil {
  70                 t.Fatal(err)
  71         }
  72         if tv.Sec == 0 && tv.Usec == 0 {
  73                 t.Fatal("Sec and Usec both zero")
  74         }
  75 }