Fix assert argument order in LdapOAuth2Test

Change-Id: I1e54b3aa3669b7c128662d6f7f8c2407d09cb4a8
diff --git a/src/test/java/de/ids_mannheim/korap/authentication/LdapOAuth2Test.java b/src/test/java/de/ids_mannheim/korap/authentication/LdapOAuth2Test.java
index c45cc37..8fa72e5 100644
--- a/src/test/java/de/ids_mannheim/korap/authentication/LdapOAuth2Test.java
+++ b/src/test/java/de/ids_mannheim/korap/authentication/LdapOAuth2Test.java
@@ -85,8 +85,8 @@
         String entity = response.readEntity(String.class);
         JsonNode node = JsonUtils.readTree(entity);
         assertEquals(2023, node.at("/errors/0/0").asInt());
-        assertEquals(node.at("/errors/0/1").asText(),
-                "LDAP Authentication failed due to unknown user or password!");
+        assertEquals("LDAP Authentication failed due to unknown user or password!",
+            node.at("/errors/0/1").asText());
     }
 
     @Test