@Test
public void update_error_input_name() throws Exception {
tester.request.getSession(true).setAttribute(
AdminPage.SESS_KEY_LOGIN_USER,
new Administrator());
// 氏名未入力
tester.param("name", "");
tester.param("mail", MAIL);
Administrator admin = new Administrator();
admin.setUid(UserService.createKey(UID));
admin.setName(NAME);
Datastore.put(admin);
tester.start("/admin/" + UID + "/update");
assertThat(tester.getPage(), is(instanceOf(AdminPage.class)));
assertThat(tester.getActionMethodName(), is("update"));