#fixed code
                                public void testExecuteNothingInQueue() throws JobExecutionException {
        IndexGitRepoJob indexGitRepoJob = new IndexGitRepoJob();
        IndexGitRepoJob spy = spy(indexGitRepoJob);

        when(spy.getNextQueuedRepo()).thenReturn(new UniqueRepoQueue());

        JobExecutionContext mockContext = Mockito.mock(JobExecutionContext.class);
        JobDetail mockDetail = Mockito.mock(JobDetail.class);
        JobDataMap mockJobDataMap = Mockito.mock(JobDataMap.class);
        CodeIndexer mockCodeIndexer = Mockito.mock(CodeIndexer.class);

        when(mockJobDataMap.get("REPOLOCATIONS")).thenReturn("");
        when(mockJobDataMap.get("LOWMEMORY")).thenReturn("true");
        when(mockDetail.getJobDataMap()).thenReturn(mockJobDataMap);
        when(mockContext.getJobDetail()).thenReturn(mockDetail);
        when(mockCodeIndexer.shouldPauseAdding()).thenReturn(false);

        spy.codeIndexer = mockCodeIndexer;

        spy.execute(mockContext);
        assertThat(spy.haveRepoResult).isFalse();
    }
#vulnerable code 
                                public void testExecuteNothingInQueue() throws JobExecutionException {
        IndexGitRepoJob indexGitRepoJob = new IndexGitRepoJob();
        IndexGitRepoJob spy = spy(indexGitRepoJob);

        when(spy.getNextQueuedRepo()).thenReturn(new UniqueRepoQueue());
        spy.execute(null);
        assertThat(spy.haveRepoResult).isFalse();
    } 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE