fix tests.

makasim · makasim · commit 6ebd3dd741ef · 2016-03-25T16:09:06.000+02:00
diff --git a/composer.json b/composer.json
@@ -28,6 +28,7 @@
         "payum/core": "~1.0"
     },
     "require-dev": {
+        "payum/core": "~1.0@dev",
         "phpunit/phpunit": "~4.0",
         "symfony/phpunit-bridge": "~2.8|~3.0"
     },
