Fixed FQSEN generation for defines in global namespace

src/phpDocumentor/Reflection/Php/Factory/Define.php

@@ -115,6 +115,10 @@ private function determineFqsen(?Context $context, Arg $name) : Fqsen
         $nameString = $name->value;
         $namespace = $context ? $context->getNamespace() : '';
 
+        if (empty($namespace)) {
+            return new Fqsen(sprintf('\\%s', $nameString->value));
+        }
+
         return new Fqsen(sprintf('\\%s\\%s', $namespace, $nameString->value));
     }
 }

tests/integration/ClassesTest.php

@@ -60,6 +60,9 @@ public function testItHasAllConstants() : void
         $constant = $class->getConstants()[$constantName];
 
         $this->assertInstanceOf(Constant::class, $constant);
+
+        $this->assertArrayHasKey('\\OVEN_TEMPERATURE', $file->getConstants());
+        $this->assertArrayHasKey('\\MAX_OVEN_TEMPERATURE', $file->getConstants());
     }
 
     public function testTypedPropertiesReturnTheirType() : void

tests/integration/data/Pizza.php

@@ -10,6 +10,12 @@
  * @link      http://phpdoc.org
  */
 
+/**
+ * This needs a docblock to separate from
+ * file docblock
+ */
+const OVEN_TEMPERATURE = 9001;
+define('MAX_OVEN_TEMPERATURE', 9002);
 
 /**
  * Pizza base class

tests/unit/phpDocumentor/Reflection/Php/Factory/DefineTest.php

@@ -67,7 +67,21 @@ public function testCreate() : void
             new Context('Space\MyClass')
         );
 
-        $this->assertConstant($constant);
+        $this->assertConstant($constant, '\\Space\\MyClass');
+    }
+
+    public function testCreateGlobal() : void
+    {
+        $constantStub = $this->buildDefineStub();
+
+        /** @var ConstantDescriptor $constant */
+        $constant = $this->fixture->create(
+            $constantStub,
+            new ProjectFactoryStrategies([]),
+            new Context('')
+        );
+
+        $this->assertConstant($constant, '');
     }
 
     public function testCreateWithDocBlock() : void
@@ -105,7 +119,7 @@ public function testCreateWithDocBlock() : void
             $context
         );
 
-        $this->assertConstant($constant);
+        $this->assertConstant($constant, '\\Space\\MyClass');
         $this->assertSame($docBlock, $constant->getDocBlock());
     }
 
@@ -122,10 +136,10 @@ private function buildDefineStub() : Expression
         );
     }
 
-    private function assertConstant(ConstantDescriptor $constant) : void
+    private function assertConstant(ConstantDescriptor $constant, string $namespace) : void
     {
         $this->assertInstanceOf(ConstantDescriptor::class, $constant);
-        $this->assertEquals('\Space\MyClass\MY_CONST1', (string) $constant->getFqsen());
+        $this->assertEquals($namespace . '\\MY_CONST1', (string) $constant->getFqsen());
         $this->assertEquals('\'a\'', $constant->getValue());
         $this->assertEquals('public', (string) $constant->getVisibility());
     }