Test inflection for underscore and CamelCase.

tests/TestCase/Utility/InflectorTest.php

@@ -92,6 +92,10 @@ class InflectorTest extends TestCase
     public function testInflectingSingulars(string $singular, string $plural): void
     {
         $this->assertSame($singular, Inflector::singularize($plural));
+
+        $singular = Inflector::camelize($singular);
+        $plural = Inflector::camelize($plural);
+        $this->assertSame($singular, Inflector::singularize($plural));
     }
 
     /**
@@ -223,6 +227,10 @@ class InflectorTest extends TestCase
     public function testInflectingPlurals(string $plural, string $singular): void
     {
         $this->assertSame($plural, Inflector::pluralize($singular));
+
+        $plural = Inflector::camelize($plural);
+        $singular = Inflector::camelize($singular);
+        $this->assertSame($plural, Inflector::pluralize($singular));
     }
 
     /**