restic/internal/backend/local/local_internal_test.go

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package local
import (
"context"
"errors"
"os"
"syscall"
"testing"
"github.com/restic/restic/internal/restic"
rtest "github.com/restic/restic/internal/test"
"github.com/cenkalti/backoff/v4"
)
func TestNoSpacePermanent(t *testing.T) {
oldOpenFile := openFile
defer func() {
openFile = oldOpenFile
}()
openFile = func(name string, flags int, mode os.FileMode) (*os.File, error) {
// The actual error from os.OpenFile is *os.PathError.
// Other functions called inside Save may return *os.SyscallError.
return nil, os.NewSyscallError("open", syscall.ENOSPC)
}
dir, cleanup := rtest.TempDir(t)
defer cleanup()
be, err := Open(context.Background(), Config{Path: dir})
rtest.OK(t, err)
defer be.Close()
h := restic.Handle{Type: restic.ConfigFile}
err = be.Save(context.Background(), h, nil)
_, ok := err.(*backoff.PermanentError)
rtest.Assert(t, ok,
"error type should be backoff.PermanentError, got %T", err)
rtest.Assert(t, errors.Is(err, syscall.ENOSPC),
"could not recover original ENOSPC error")
}