Testing Spring Boot Security simply

I'm struggling with testing access control on URLs protected by Spring Security.

The configuration looks like this:

    http
            .authorizeRequests()
            .antMatchers("/api/user/**", "/user").authenticated()
            .antMatchers("/api/admin/**", "/templates/admin/**", "/admin/**").hasAuthority("ADMIN")
            .anyRequest().permitAll();

And the test class looks like this:

package com.kubukoz.myapp;

import com.kubukoz.myapp.config.WebSecurityConfig;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.security.web.FilterChainProxy;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import javax.transaction.Transactional;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;


@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = {MyApplication.class, WebSecurityConfig.class})
@WebAppConfiguration
@TransactionConfiguration(defaultRollback = true)
@Transactional(rollbackOn = Exception.class)
public class MyApplicationTests {

    @Autowired
    private WebApplicationContext context;
    private MockMvc mockMvc;
    @Autowired
    private FilterChainProxy filterChainProxy;

    @Before
    public void setUp() {
        mockMvc = MockMvcBuilders.webAppContextSetup(context)
                .dispatchOptions(true)
                .addFilters(filterChainProxy)
                .build();
    }

    @Test
    public void testAnonymous() throws Exception {
        mockMvc.perform(get("/api/user/account")).andExpect(status().is3xxRedirection());
    }

    @Test
    public void testUserAccessForAccount() throws Exception{
        mockMvc.perform(get("/api/user/account")).andExpect(status().isOk());
    }
}

What's the easiest way to make the last test pass? @WithMockUser didn't work.