rm test

mooctest-user-server/src/main/java/cn/iselab/mooctest/user/web/wrapper/BaseWrapper.java

@@ -23,7 +23,7 @@ public abstract class BaseWrapper<VO, DATA> {
     public abstract DATA unwrap(VO data);
 
     public List<VO> wrap(List<DATA> data) {
-        return data.stream().map(this::wrap).collect(Collectors.toList());
+        return data.stream().filter(Objects::nonNull).map(this::wrap).collect(Collectors.toList());
     }
 
     public Page<VO> wrap(Page<DATA> data) {