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Source file src/syscall/syscall_test.go

Documentation: syscall

  // Copyright 2013 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 syscall_test
  
  import (
  	"fmt"
  	"internal/testenv"
  	"os"
  	"runtime"
  	"syscall"
  	"testing"
  )
  
  func testSetGetenv(t *testing.T, key, value string) {
  	err := syscall.Setenv(key, value)
  	if err != nil {
  		t.Fatalf("Setenv failed to set %q: %v", value, err)
  	}
  	newvalue, found := syscall.Getenv(key)
  	if !found {
  		t.Fatalf("Getenv failed to find %v variable (want value %q)", key, value)
  	}
  	if newvalue != value {
  		t.Fatalf("Getenv(%v) = %q; want %q", key, newvalue, value)
  	}
  }
  
  func TestEnv(t *testing.T) {
  	testSetGetenv(t, "TESTENV", "AVALUE")
  	// make sure TESTENV gets set to "", not deleted
  	testSetGetenv(t, "TESTENV", "")
  }
  
  func TestItoa(t *testing.T) {
  	// Make most negative integer: 0x8000...
  	i := 1
  	for i<<1 != 0 {
  		i <<= 1
  	}
  	if i >= 0 {
  		t.Fatal("bad math")
  	}
  	s := syscall.Itoa(i)
  	f := fmt.Sprint(i)
  	if s != f {
  		t.Fatalf("itoa(%d) = %s, want %s", i, s, f)
  	}
  }
  
  // Check that permuting child process fds doesn't interfere with
  // reporting of fork/exec status. See Issue 14979.
  func TestExecErrPermutedFds(t *testing.T) {
  	testenv.MustHaveExec(t)
  
  	attr := &os.ProcAttr{Files: []*os.File{os.Stdin, os.Stderr, os.Stdout}}
  	_, err := os.StartProcess("/", []string{"/"}, attr)
  	if err == nil {
  		t.Fatalf("StartProcess of invalid program returned err = nil")
  	}
  }
  
  func TestGettimeofday(t *testing.T) {
  	if runtime.GOOS == "nacl" {
  		t.Skip("not implemented on nacl")
  	}
  	tv := &syscall.Timeval{}
  	if err := syscall.Gettimeofday(tv); err != nil {
  		t.Fatal(err)
  	}
  	if tv.Sec == 0 && tv.Usec == 0 {
  		t.Fatal("Sec and Usec both zero")
  	}
  }
  

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