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 } 76
