Fix assert argument order in VirtualCorpusDaoTest

Change-Id: Ic3c5ff055738c0111417b090481f735d765748a8
diff --git a/src/test/java/de/ids_mannheim/korap/dao/VirtualCorpusDaoTest.java b/src/test/java/de/ids_mannheim/korap/dao/VirtualCorpusDaoTest.java
index 12a0969..9e94ca5 100644
--- a/src/test/java/de/ids_mannheim/korap/dao/VirtualCorpusDaoTest.java
+++ b/src/test/java/de/ids_mannheim/korap/dao/VirtualCorpusDaoTest.java
@@ -73,9 +73,9 @@
                             "experimental", false, "system", null, null);
                 });
 
-        assertEquals(exception.getMessage(),
-                "Converting `org.hibernate.exception.GenericJDBCException` "
-                        + "to JPA `PersistenceException` : could not execute statement");
+        assertEquals("Converting `org.hibernate.exception.GenericJDBCException` "
+                        + "to JPA `PersistenceException` : could not execute statement",
+            exception.getMessage());
     }
 
     @Test