File::getMethodProperties(): add extra test with nullable static return type

Author: jrfnl

tests/Core/File/GetMethodPropertiesTest.inc

@@ -79,6 +79,11 @@ class ReturnMe {
     private function myFunction(): static {
         return $this;
     }
+
+    /* testReturnTypeNullableStatic */
+    function myNullableFunction(): ?static {
+        return $this;
+    }
 }
 
 /* testPHP8MixedTypeHint */

tests/Core/File/GetMethodPropertiesTest.php

@@ -563,6 +563,32 @@ public function testReturnTypeStatic()
     }//end testReturnTypeStatic()
 
 
+    /**
+     * Test a function with return type "?static".
+     *
+     * @return void
+     */
+    public function testReturnTypeNullableStatic()
+    {
+        // Offsets are relative to the T_FUNCTION token.
+        $expected = [
+            'scope'                 => 'public',
+            'scope_specified'       => false,
+            'return_type'           => '?static',
+            'return_type_token'     => 8,
+            'return_type_end_token' => 8,
+            'nullable_return_type'  => true,
+            'is_abstract'           => false,
+            'is_final'              => false,
+            'is_static'             => false,
+            'has_body'              => true,
+        ];
+
+        $this->getMethodPropertiesTestHelper('/* '.__FUNCTION__.' */', $expected);
+
+    }//end testReturnTypeNullableStatic()
+
+
     /**
      * Test a function with return type "mixed".
      *