@Test
    public void testGetAuthPermByUserName() {
        final Set<String> result = permissionServiceImplUnderTest.getAuthPermByUserName("admin");
        assertThat(result.size(), is(1));
    }
add test case for {@link PermissionServiceImpl}.
shenyu-admin/src/test/java/org/apache/shenyu/admin/service/PermissionServiceTest.java