fs: test File implementation of Local FS

internal/fs/fs_local_unix_test.go

@@ -0,0 +1,40 @@
+//go:build unix
+
+package fs
+
+import (
+	"syscall"
+	"testing"
+
+	"github.com/restic/restic/internal/restic"
+	rtest "github.com/restic/restic/internal/test"
+)
+
+func TestFSLocalMetadataUnix(t *testing.T) {
+	for _, test := range []fsLocalMetadataTestcase{
+		{
+			name: "socket",
+			setup: func(t *testing.T, path string) {
+				fd, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM, 0)
+				rtest.OK(t, err)
+				defer func() {
+					_ = syscall.Close(fd)
+				}()
+
+				addr := &syscall.SockaddrUnix{Name: path}
+				rtest.OK(t, syscall.Bind(fd, addr))
+			},
+			nodeType: restic.NodeTypeSocket,
+		},
+		{
+			name: "fifo",
+			setup: func(t *testing.T, path string) {
+				rtest.OK(t, mkfifo(path, 0o600))
+			},
+			nodeType: restic.NodeTypeFifo,
+		},
+		// device files can only be created as root
+	} {
+		runFSLocalTestcase(t, test)
+	}
+}