Improved test coverage

treeNode.go

@@ -1,8 +1,6 @@
 package router
 
 import (
-	"fmt"
-	"io"
 	"strings"
 )
 
@@ -283,47 +281,3 @@ func (node *treeNode[T]) each(callback func(*treeNode[T])) {
 		node.wildcard.each(callback)
 	}
 }
-
-// PrettyPrint prints a human-readable form of the tree to the given writer.
-func (node *treeNode[T]) PrettyPrint(writer io.Writer) {
-	node.prettyPrint(writer, -1)
-}
-
-// prettyPrint is the underlying pretty printer.
-func (node *treeNode[T]) prettyPrint(writer io.Writer, level int) {
-	prefix := ""
-
-	if level >= 0 {
-		prefix = strings.Repeat("  ", level) + "|_ "
-	}
-
-	switch node.kind {
-	case ':':
-		prefix += ":"
-	case '*':
-		prefix += "*"
-	}
-
-	fmt.Fprintf(writer, "%s%s [%v]\n", prefix, node.prefix, node.data)
-
-	for _, child := range node.children {
-		if child == nil {
-			continue
-		}
-
-		child.prettyPrint(writer, level+1)
-	}
-
-	if node.parameter != nil {
-		node.parameter.prettyPrint(writer, level+1)
-	}
-
-	if node.wildcard != nil {
-		node.wildcard.prettyPrint(writer, level+1)
-	}
-}
-
-// String returns the node prefix.
-func (node *treeNode[T]) String() string {
-	return node.prefix
-}