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Current Path: /opt/golang/1.22.0/src/os

📁 ..
📄 dir.go(4.4 KB)
📄 dir_darwin.go(3.34 KB)
📄 dir_plan9.go(2.1 KB)
📄 dir_unix.go(5.24 KB)
📄 dir_windows.go(7.17 KB)
📄 dirent_aix.go(759 B)
📄 dirent_dragonfly.go(1.28 KB)
📄 dirent_freebsd.go(1.16 KB)
📄 dirent_js.go(678 B)
📄 dirent_linux.go(1.18 KB)
📄 dirent_netbsd.go(1.16 KB)
📄 dirent_openbsd.go(1.16 KB)
📄 dirent_solaris.go(759 B)
📄 dirent_wasip1.go(1.36 KB)
📄 endian_big.go(244 B)
📄 endian_little.go(304 B)
📄 env.go(3.85 KB)
📄 env_test.go(5.04 KB)
📄 env_unix_test.go(1.22 KB)
📄 error.go(4.76 KB)
📄 error_errno.go(247 B)
📄 error_plan9.go(234 B)
📄 error_posix.go(538 B)
📄 error_test.go(4.92 KB)
📄 error_unix_test.go(1.49 KB)
📄 error_windows_test.go(1.72 KB)
📄 example_test.go(8.39 KB)
📁 exec
📄 exec.go(6.01 KB)
📄 exec_plan9.go(3.27 KB)
📄 exec_posix.go(3.44 KB)
📄 exec_unix.go(2.09 KB)
📄 exec_unix_test.go(999 B)
📄 exec_windows.go(4.57 KB)
📄 exec_windows_test.go(1.78 KB)
📄 executable.go(774 B)
📄 executable_darwin.go(613 B)
📄 executable_dragonfly.go(293 B)
📄 executable_freebsd.go(292 B)
📄 executable_path.go(2.31 KB)
📄 executable_plan9.go(427 B)
📄 executable_procfs.go(904 B)
📄 executable_solaris.go(695 B)
📄 executable_sysctl.go(891 B)
📄 executable_test.go(3.4 KB)
📄 executable_wasm.go(333 B)
📄 executable_windows.go(641 B)
📄 export_linux_test.go(337 B)
📄 export_test.go(433 B)
📄 export_unix_test.go(241 B)
📄 export_windows_test.go(395 B)
📄 fifo_test.go(4.62 KB)
📄 file.go(24.91 KB)
📄 file_mutex_plan9.go(1.81 KB)
📄 file_open_unix.go(397 B)
📄 file_open_wasip1.go(818 B)
📄 file_plan9.go(15.99 KB)
📄 file_posix.go(7.1 KB)
📄 file_unix.go(14.05 KB)
📄 file_wasip1.go(633 B)
📄 file_windows.go(12.65 KB)
📄 getwd.go(2.52 KB)
📄 os_test.go(77.07 KB)
📄 os_unix_test.go(11.47 KB)
📄 os_windows_test.go(41.83 KB)
📄 path.go(2.27 KB)
📄 path_plan9.go(492 B)
📄 path_test.go(2.96 KB)
📄 path_unix.go(1.56 KB)
📄 path_windows.go(5.66 KB)
📄 path_windows_test.go(4.03 KB)
📄 pipe2_unix.go(640 B)
📄 pipe_test.go(12.41 KB)
📄 pipe_unix.go(760 B)
📄 pipe_wasm.go(488 B)
📄 proc.go(2.27 KB)
📄 rawconn.go(993 B)
📄 rawconn_test.go(1.15 KB)
📄 read_test.go(3.2 KB)
📄 readfrom_linux_test.go(20.3 KB)
📄 removeall_at.go(4.91 KB)
📄 removeall_noat.go(3.13 KB)
📄 removeall_test.go(11.96 KB)
📁 signal
📄 stat.go(965 B)
📄 stat_aix.go(1.18 KB)
📄 stat_darwin.go(1.09 KB)
📄 stat_dragonfly.go(1.06 KB)
📄 stat_freebsd.go(1.07 KB)
📄 stat_js.go(1.11 KB)
📄 stat_linux.go(1.06 KB)
📄 stat_netbsd.go(1.07 KB)
📄 stat_openbsd.go(1.06 KB)
📄 stat_plan9.go(2.37 KB)
📄 stat_solaris.go(1.3 KB)
📄 stat_test.go(6.46 KB)
📄 stat_unix.go(1.23 KB)
📄 stat_wasip1.go(956 B)
📄 stat_windows.go(4.93 KB)
📄 sticky_bsd.go(425 B)
📄 sticky_notbsd.go(320 B)
📄 sys.go(294 B)
📄 sys_aix.go(682 B)
📄 sys_bsd.go(466 B)
📄 sys_js.go(313 B)
📄 sys_linux.go(1.04 KB)
📄 sys_plan9.go(453 B)
📄 sys_solaris.go(265 B)
📄 sys_unix.go(493 B)
📄 sys_wasip1.go(309 B)
📄 sys_windows.go(874 B)
📄 tempfile.go(3.8 KB)
📄 tempfile_test.go(5.49 KB)
📁 testdata
📄 timeout_test.go(17.09 KB)
📄 types.go(2.79 KB)
📄 types_plan9.go(797 B)
📄 types_unix.go(776 B)
📄 types_windows.go(10.01 KB)
📁 user
📄 wait6_dragonfly.go(496 B)
📄 wait6_freebsd64.go(547 B)
📄 wait6_freebsd_386.go(544 B)
📄 wait6_freebsd_arm.go(549 B)
📄 wait6_netbsd.go(534 B)
📄 wait_unimp.go(831 B)
📄 wait_wait6.go(781 B)
📄 wait_waitid.go(1.32 KB)
📄 writeto_linux_test.go(4.21 KB)
📄 zero_copy_linux.go(4.38 KB)
📄 zero_copy_stub.go(406 B)

Editing: env_test.go

// Copyright 2010 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 os_test

import (
	. "os"
	"reflect"
	"strings"
	"testing"
)

// testGetenv gives us a controlled set of variables for testing Expand.
func testGetenv(s string) string {
	switch s {
	case "*":
		return "all the args"
	case "#":
		return "NARGS"
	case "$":
		return "PID"
	case "1":
		return "ARGUMENT1"
	case "HOME":
		return "/usr/gopher"
	case "H":
		return "(Value of H)"
	case "home_1":
		return "/usr/foo"
	case "_":
		return "underscore"
	}
	return ""
}

var expandTests = []struct {
	in, out string
}{
	{"", ""},
	{"$*", "all the args"},
	{"$$", "PID"},
	{"${*}", "all the args"},
	{"$1", "ARGUMENT1"},
	{"${1}", "ARGUMENT1"},
	{"now is the time", "now is the time"},
	{"$HOME", "/usr/gopher"},
	{"$home_1", "/usr/foo"},
	{"${HOME}", "/usr/gopher"},
	{"${H}OME", "(Value of H)OME"},
	{"A$$$#$1$H$home_1*B", "APIDNARGSARGUMENT1(Value of H)/usr/foo*B"},
	{"start$+middle$^end$", "start$+middle$^end$"},
	{"mixed$|bag$$$", "mixed$|bagPID$"},
	{"$", "$"},
	{"$}", "$}"},
	{"${", ""},  // invalid syntax; eat up the characters
	{"${}", ""}, // invalid syntax; eat up the characters
}

func TestExpand(t *testing.T) {
	for _, test := range expandTests {
		result := Expand(test.in, testGetenv)
		if result != test.out {
			t.Errorf("Expand(%q)=%q; expected %q", test.in, result, test.out)
		}
	}
}

var global any

func BenchmarkExpand(b *testing.B) {
	b.Run("noop", func(b *testing.B) {
		var s string
		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			s = Expand("tick tick tick tick", func(string) string { return "" })
		}
		global = s
	})
	b.Run("multiple", func(b *testing.B) {
		var s string
		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			s = Expand("$a $a $a $a", func(string) string { return "boom" })
		}
		global = s
	})
}

func TestConsistentEnviron(t *testing.T) {
	e0 := Environ()
	for i := 0; i < 10; i++ {
		e1 := Environ()
		if !reflect.DeepEqual(e0, e1) {
			t.Fatalf("environment changed")
		}
	}
}

func TestUnsetenv(t *testing.T) {
	const testKey = "GO_TEST_UNSETENV"
	set := func() bool {
		prefix := testKey + "="
		for _, key := range Environ() {
			if strings.HasPrefix(key, prefix) {
				return true
			}
		}
		return false
	}
	if err := Setenv(testKey, "1"); err != nil {
		t.Fatalf("Setenv: %v", err)
	}
	if !set() {
		t.Error("Setenv didn't set TestUnsetenv")
	}
	if err := Unsetenv(testKey); err != nil {
		t.Fatalf("Unsetenv: %v", err)
	}
	if set() {
		t.Fatal("Unsetenv didn't clear TestUnsetenv")
	}
}

func TestClearenv(t *testing.T) {
	const testKey = "GO_TEST_CLEARENV"
	const testValue = "1"

// reset env
	defer func(origEnv []string) {
		for _, pair := range origEnv {
			// Environment variables on Windows can begin with =
			// https://devblogs.microsoft.com/oldnewthing/20100506-00/?p=14133
			i := strings.Index(pair[1:], "=") + 1
			if err := Setenv(pair[:i], pair[i+1:]); err != nil {
				t.Errorf("Setenv(%q, %q) failed during reset: %v", pair[:i], pair[i+1:], err)
			}
		}
	}(Environ())

if err := Setenv(testKey, testValue); err != nil {
		t.Fatalf("Setenv(%q, %q) failed: %v", testKey, testValue, err)
	}
	if _, ok := LookupEnv(testKey); !ok {
		t.Errorf("Setenv(%q, %q) didn't set $%s", testKey, testValue, testKey)
	}
	Clearenv()
	if val, ok := LookupEnv(testKey); ok {
		t.Errorf("Clearenv() didn't clear $%s, remained with value %q", testKey, val)
	}
}

func TestLookupEnv(t *testing.T) {
	const smallpox = "SMALLPOX"      // No one has smallpox.
	value, ok := LookupEnv(smallpox) // Should not exist.
	if ok || value != "" {
		t.Fatalf("%s=%q", smallpox, value)
	}
	defer Unsetenv(smallpox)
	err := Setenv(smallpox, "virus")
	if err != nil {
		t.Fatalf("failed to release smallpox virus")
	}
	_, ok = LookupEnv(smallpox)
	if !ok {
		t.Errorf("smallpox release failed; world remains safe but LookupEnv is broken")
	}
}

// On Windows, Environ was observed to report keys with a single leading "=".
// Check that they are properly reported by LookupEnv and can be set by SetEnv.
// See https://golang.org/issue/49886.
func TestEnvironConsistency(t *testing.T) {
	t.Parallel()

for _, kv := range Environ() {
		i := strings.Index(kv, "=")
		if i == 0 {
			// We observe in practice keys with a single leading "=" on Windows.
			// TODO(#49886): Should we consume only the first leading "=" as part
			// of the key, or parse through arbitrarily many of them until a non-=,
			// or try each possible key/value boundary until LookupEnv succeeds?
			i = strings.Index(kv[1:], "=") + 1
		}
		if i < 0 {
			t.Errorf("Environ entry missing '=': %q", kv)
		}

k := kv[:i]
		v := kv[i+1:]
		v2, ok := LookupEnv(k)
		if ok && v == v2 {
			t.Logf("LookupEnv(%q) = %q, %t", k, v2, ok)
		} else {
			t.Errorf("Environ contains %q, but LookupEnv(%q) = %q, %t", kv, k, v2, ok)
		}

// Since k=v is already present in the environment,
		// setting it should be a no-op.
		if err := Setenv(k, v); err == nil {
			t.Logf("Setenv(%q, %q)", k, v)
		} else {
			t.Errorf("Environ contains %q, but SetEnv(%q, %q) = %q", kv, k, v, err)
		}
	}
}

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Editing: env_test.go

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