Add unit-test for stringification of a ListTypeInterface value

Author: tvdijen

tests/XMLSchema/Type/EntitiesValueTest.php

@@ -51,6 +51,17 @@ public function testToArray(): void
     }
 
 
+    /**
+     * Test stringification of the value
+     */
+    #[DependsOnClass(EntitiesTest::class)]
+    public function testStringification(): void
+    {
+        $entities = EntitiesValue::fromString("foo \nbar  baz");
+        $this->assertEquals('foo bar baz', strval($entities));
+    }
+
+
     /**
      * @return array<string, array{0: true, 1: string}>
      */