@Test
public void testGetReposForUserAtCurrentInstantWithNullUser() throws Exception {

    GitHub github = mock(GitHub.class);
    GitHubUtil gitHubUtil = new GitHubUtil(github);
    Map<String, GHRepository> repoByName = gitHubUtil.getReposForUserAtCurrentInstant(null);
    assertEquals(repoByName.size(), 0);
}