Add slugify string node

tests/test_dumas_json_nodes.py

@@ -17,6 +17,7 @@ from dumas_json_nodes import (
     DumasJSONObjectToStringNode,
     DumasJSONStringToObjectNode,
     DumasJSONSetValueNode,
+    DumasSlugifyStringNode,
     DumasStripIterationSuffixNode,
 )
 
@@ -63,6 +64,20 @@ class DumasJSONNodeTests(unittest.TestCase):
 
         self.assertEqual(result, ("my_asset_final.png",))
 
+    def test_slugify_string_normalizes_text(self):
+        node = DumasSlugifyStringNode()
+
+        result = node.slugify_string("Hello, World! This is Dumas.")
+
+        self.assertEqual(result, ("hello-world-this-is-dumas",))
+
+    def test_slugify_string_strips_accents_and_repeated_symbols(self):
+        node = DumasSlugifyStringNode()
+
+        result = node.slugify_string("Crème brûlée___2026")
+
+        self.assertEqual(result, ("creme-brulee-2026",))
+
     def test_get_value_reads_nested_paths(self):
         node = DumasJSONGetValueNode()