Variables::getMemberProperties(): add tests verifying support for nam…

…espace operator in types

The commit which added support for the namespace keyword used as an operator to the `Collections::propertyTypeTokens[BC]()` methods implicitly added support for this to the `Variables::getMemberProperties()` method.

This commit adds a unit test to safeguard this support.

The same commit also _silently_ added support for the namespace operator to the `BCFile::getMemberProperties()` method. Namespace operators in property types are not supported yet in PHPCS itself and until they are, the fact that the `BCFile::getMemberProperties()` method supports this should be regarded as an artefact and not as official support.

PHPCSUtils/Utils/Variables.php

@@ -81,6 +81,7 @@ class Variables
      *   other non-property variables passed to the method.
      * - Defensive coding against incorrect calls to this method.
      * - Support for PHP 8.0 union types.
+     * - Support for namespace operator in type declarations.
      *
      * @see \PHP_CodeSniffer\Files\File::getMemberProperties()   Original source.
      * @see \PHPCSUtils\BackCompat\BCFile::getMemberProperties() Cross-version compatible version of the original.

Tests/Utils/Variables/GetMemberPropertiesDiffTest.inc

@@ -52,3 +52,8 @@ $anon = class() {
     // Intentional fatal error - duplicate types are not allowed in union types, but that's not the concern of the method.
     public int |string| /*comment*/ INT $duplicateTypeInUnion;
 };
+
+class NSOperatorInType {
+    /* testNamespaceOperatorTypeHint */
+    public ?namespace\Name $prop;
+}

Tests/Utils/Variables/GetMemberPropertiesDiffTest.php

@@ -232,6 +232,18 @@ public function dataGetMemberProperties()
                     'nullable_type'   => false,
                 ],
             ],
+            'namespace-operator-type-declaration' => [
+                '/* testNamespaceOperatorTypeHint */',
+                [
+                    'scope'           => 'public',
+                    'scope_specified' => true,
+                    'is_static'       => false,
+                    'type'            => '?namespace\Name',
+                    'type_token'      => -4, // Offset from the T_VARIABLE token.
+                    'type_end_token'  => -2, // Offset from the T_VARIABLE token.
+                    'nullable_type'   => true,
+                ],
+            ],
         ];
     }
 }