mirror of
https://github.com/safing/portbase
synced 2025-09-01 18:19:57 +00:00
111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build linux
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package renameio
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"syscall"
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"testing"
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)
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func TestTempDir(t *testing.T) {
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if tmpdir, ok := os.LookupEnv("TMPDIR"); ok {
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defer os.Setenv("TMPDIR", tmpdir) // restore
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} else {
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defer os.Unsetenv("TMPDIR") // restore
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}
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mount1, err := ioutil.TempDir("", "tempdirtest")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(mount1)
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mount2, err := ioutil.TempDir("", "tempdirtest")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(mount2)
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if err := syscall.Mount("tmpfs", mount1, "tmpfs", 0, ""); err != nil {
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t.Skipf("cannot mount tmpfs on %s: %v", mount1, err)
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}
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defer syscall.Unmount(mount1, 0)
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if err := syscall.Mount("tmpfs", mount2, "tmpfs", 0, ""); err != nil {
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t.Skipf("cannot mount tmpfs on %s: %v", mount2, err)
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}
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defer syscall.Unmount(mount2, 0)
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tests := []struct {
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name string
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dir string
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path string
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TMPDIR string
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want string
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}{
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{
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name: "implicit TMPDIR",
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path: filepath.Join(os.TempDir(), "foo.txt"),
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want: os.TempDir(),
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},
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{
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name: "explicit TMPDIR",
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path: filepath.Join(mount1, "foo.txt"),
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TMPDIR: mount1,
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want: mount1,
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},
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{
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name: "explicit unsuitable TMPDIR",
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path: filepath.Join(mount1, "foo.txt"),
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TMPDIR: mount2,
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want: mount1,
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},
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{
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name: "nonexistant TMPDIR",
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path: filepath.Join(mount1, "foo.txt"),
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TMPDIR: "/nonexistant",
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want: mount1,
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},
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{
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name: "caller-specified",
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dir: "/overridden",
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path: filepath.Join(mount1, "foo.txt"),
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TMPDIR: "/nonexistant",
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want: "/overridden",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if tt.TMPDIR == "" {
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os.Unsetenv("TMPDIR")
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} else {
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os.Setenv("TMPDIR", tt.TMPDIR)
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}
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if got := tempDir(tt.dir, tt.path); got != tt.want {
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t.Fatalf("tempDir(%q, %q): got %q, want %q", tt.dir, tt.path, got, tt.want)
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}
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})
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}
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}
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