Smail/backend/utils/atomicfile/atomicfile_test.go
smail f60d3b0880
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整理前后端与测试构建目录并完善配置和安全引导
统一 frontend、backend、test、test-log 和 out 目录,更新构建、部署及测试入口;纳入配置管理兼容与首次安全引导修复;排除本机配置、密钥和测试产物。
2026-09-05 19:19:52 +08:00

58 lines
1.2 KiB
Go

package atomicfile
import (
"os"
"path/filepath"
"runtime"
"strings"
"testing"
)
func TestWriteReplacesFileAtomically(t *testing.T) {
directory := t.TempDir()
path := filepath.Join(directory, "config.json")
if err := os.WriteFile(path, []byte("old"), 0644); err != nil {
t.Fatal(err)
}
if err := Write(path, []byte("new"), 0600); err != nil {
t.Fatal(err)
}
data, err := os.ReadFile(path)
if err != nil {
t.Fatal(err)
}
if string(data) != "new" {
t.Fatalf("atomic file content = %q, want new", data)
}
info, err := os.Stat(path)
if err != nil {
t.Fatal(err)
}
if runtime.GOOS != "windows" && info.Mode().Perm() != 0600 {
t.Fatalf("atomic file permissions = %o, want 600", info.Mode().Perm())
}
entries, err := os.ReadDir(directory)
if err != nil {
t.Fatal(err)
}
for _, entry := range entries {
if strings.HasPrefix(entry.Name(), ".config.json-") {
t.Fatalf("temporary file was left behind: %s", entry.Name())
}
}
}
func TestWriteCreatesEmptyFile(t *testing.T) {
path := filepath.Join(t.TempDir(), "empty")
if err := Write(path, nil, 0600); err != nil {
t.Fatal(err)
}
info, err := os.Stat(path)
if err != nil {
t.Fatal(err)
}
if info.Size() != 0 {
t.Fatalf("empty atomic file size = %d, want 0", info.Size())
}
}