Clear the attribute cursor when moving to the root

navigator_root_test.go

@@ -0,0 +1,27 @@
+package htmlquery
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/antchfx/xpath"
+)
+
+func TestMoveToRootFromAttribute(t *testing.T) {
+	doc, err := Parse(strings.NewReader(`<div id="example"><span></span></div>`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	iter := xpath.MustCompile("//div/@id").Select(CreateXPathNavigator(doc))
+	if !iter.MoveNext() {
+		t.Fatal("attribute not found")
+	}
+	nav := iter.Current().Copy()
+	nav.MoveToRoot()
+	if !nav.MoveToChild() {
+		t.Fatal("root still has an attribute cursor and cannot move to its child")
+	}
+	if nav.NodeType() != xpath.ElementNode || nav.LocalName() != "html" {
+		t.Fatalf("unexpected child after root navigation: %v", nav)
+	}
+}

query.go

@@ -301,6 +301,7 @@ func (h *NodeNavigator) Copy() xpath.NodeNavigator {
 
 func (h *NodeNavigator) MoveToRoot() {
 	h.curr = h.root
+	h.attr = -1
 }
 
 func (h *NodeNavigator) MoveToParent() bool {