Fix test

Author: mpv1989

src/test/java/com/arangodb/ArangoDatabaseTest.java

@@ -757,7 +757,7 @@ public void queryWithBindVars() throws InterruptedException {
 
 @Test
 public void queryWithWarning() {
-final ArangoCursor<String> cursor = arangoDB.db().query("return _apps + 1", null, null, String.class);
+final ArangoCursor<String> cursor = arangoDB.db().query("return 1/0", null, null, String.class);
 
 assertThat(cursor, is(notNullValue()));
 assertThat(cursor.getWarnings(), is(notNullValue()));