public function testHasConstant()
 {
     $hasConstant = $this->parsedRefFileNamespace->hasConstant('Unknown');
     $this->assertFalse($hasConstant);
     $hasConstant = $this->parsedRefFileNamespace->hasConstant('NAMESPACE_NAME');
     $this->assertTrue($hasConstant);
 }
 protected function resolveExprConstFetch(Expr\ConstFetch $node)
 {
     $constantValue = null;
     $isResolved = false;
     /** @var ReflectionFileNamespace|null $fileNamespace */
     $fileNamespace = null;
     $isFQNConstant = $node->name instanceof Node\Name\FullyQualified;
     $constantName = $node->name->toString();
     if (!$isFQNConstant) {
         if (method_exists($this->context, 'getFileName')) {
             $fileName = $this->context->getFileName();
             $namespaceName = $this->context->getNamespaceName();
             $fileNamespace = new ReflectionFileNamespace($fileName, $namespaceName);
             if ($fileNamespace->hasConstant($constantName)) {
                 $constantValue = $fileNamespace->getConstant($constantName);
                 $constantName = $fileNamespace->getName() . '\\' . $constantName;
                 $isResolved = true;
             }
         }
     }
     if (!$isResolved && defined($constantName)) {
         $constantValue = constant($constantName);
     }
     if ($this->nodeLevel === 1 && !isset(self::$notConstants[$constantName])) {
         $this->isConstant = true;
         $this->constantName = $constantName;
     }
     return $constantValue;
 }