package vfserror

import (
	"errors"
	"testing"
)

func TestVFSError(t *testing.T) {
	t.Parallel()
	err := NewVFSError("open", "k1", ErrNotFound)
	if err == nil {
		t.Fatal("nil error")
	}
	if !errors.Is(err, ErrNotFound) {
		t.Error("should unwrap to ErrNotFound")
	}
	if err.Key != "k1" || err.Op != "open" {
		t.Errorf("bad fields: %+v", err)
	}
}

func TestVFSErrorWithSize(t *testing.T) {
	t.Parallel()
	err := NewVFSErrorWithSize("create", "big", 12345, ErrCapacityExceeded)
	if err.Size != 12345 {
		t.Errorf("size = %d, want 12345", err.Size)
	}
	if err.Error() == "" {
		t.Error("Error() empty")
	}
}