Return an empty context when no file related to the reflector

Author: dunglas

src/Types/ContextFactory.php

@@ -37,8 +37,6 @@ final class ContextFactory
      * @see Context for more information on Contexts.
      *
      * @return Context
-     *
-     * @throws \InvalidArgumentException
      */
     public function createFromReflector(\Reflector $reflector)
     {
@@ -47,8 +45,10 @@ public function createFromReflector(\Reflector $reflector)
         }
 
         $fileName = $reflector->getFileName();
+        $namespace = $reflector->getNamespaceName();
+
         if (!$fileName) {
-            throw new \InvalidArgumentException('There is no file name associated with this reflector.');
+            return new Context($namespace, []);
         }
 
         return $this->createForNamespace($reflector->getNamespaceName(), file_get_contents($fileName));

tests/unit/Types/ContextFactoryTest.php

@@ -151,13 +151,14 @@ public function bar()
         }
 
         /**
-         * @expectedException \InvalidArgumentException
          * @covers ::createFromReflector
          */
-        public function testThrowExceptionWhenEmptyFileName()
+        public function testEmptyFileName()
         {
             $fixture = new ContextFactory();
-            $fixture->createFromReflector(new \ReflectionClass('stdClass'));
+            $context = $fixture->createFromReflector(new \ReflectionClass('stdClass'));
+
+            $this->assertSame([], $context->getNamespaceAliases());
         }
     }
 }