Ocheja fix (#3572)

* Define beans for handling different message types in a lean chat app

* Add class based spring beans configuration

* Define spring configuration in XML for constructor based bean injection

* Refactor package structure to separate constructor based bean injection code set from setter based bean injection code set

* Define configuration and classes specific to setter-based bean injection.

* Implement tests for constructor-based and setter-based bean injections

* develop codes for explaining type erasure

* Write unit tests for type erasure examples

* Remove evaluation article code

* Modify type erasure examples and unit tests

* Modify type erasure examples and unit tests

* Add expected exception in TypeErasureUnitTest

* Correct grammar in class name

* Implement File Manager app to demonstrate Polymorphism. Develop unit tests for Polymorphism article code

* Add examples for static polymorphism

* Change sysout statments to slf4j log info statements

* Add assertions and expected errors check on Test

* Add assertions and expected errors check on Test

* Correct compile time error of symbol not found

* Removed commented out non-compiling test.

* Replace string concatenations with String.format

* Replace string concatenations with String.format

* Remove verbose file info descriptor and replace with simpler one

* Add example codes for Hibernate Interceptors article
Write tests for session-scoped and sessionFactory-scoped interceptors

* Implement serializable on customInterceptorImpl

* Implement examples for spring data with spring security integration

* Remove webapp example implementations; too extensive

hibernate5/src/main/java/com/baeldung/hibernate/interceptors/CustomInterceptorImpl.java

@@ -9,7 +9,7 @@ import org.hibernate.Interceptor;
 import org.hibernate.Transaction;
 import org.hibernate.type.Type;
 
-public class CustomInterceptorImpl implements Interceptor {
+public class CustomInterceptorImpl implements Interceptor, Serializable {
 
     @Override
     public boolean onLoad(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) throws CallbackException {

spring-data-spring-security/README.md

@@ -0,0 +1,14 @@
+# About this project
+This project contains examples from the [Spring Data with Spring Security](http://www.baeldung.com/spring-data-with-spring-security) article from Baeldung.
+
+# Running the project
+The application uses [Spring Boot](http://projects.spring.io/spring-boot/), so it is easy to run. You can start it any of a few ways:
+* Run the `main` method from `SpringDataRestApplication`
+* Use the Maven Spring Boot plugin: `mvn spring-boot:run`
+* Package the application as a JAR and run it using `java -jar spring-data-spring-security.jar`
+
+# Viewing the running application
+To view the running application, visit [http://localhost:8080](http://localhost:8080) in your browser
+
+###Relevant Articles:
+- [Spring Data with Spring Security](http://www.baeldung.com/spring-data-with-spring-security)

spring-data-spring-security/pom.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.baeldung</groupId>
+	<artifactId>spring-data-spring-security</artifactId>
+	<version>1.0</version>
+	<packaging>jar</packaging>
+
+	<name>intro-spring-data-spring-security</name>
+	<description>Spring Data with Spring Security</description>
+
+	<parent>
+		<artifactId>parent-boot-5</artifactId>
+		<groupId>com.baeldung</groupId>
+		<version>0.0.1-SNAPSHOT</version>
+		<relativePath>../parent-boot-5</relativePath>
+	</parent>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.security</groupId>
+			<artifactId>spring-security-data</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-security</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.security</groupId>
+			<artifactId>spring-security-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.tomcat.embed</groupId>
+			<artifactId>tomcat-embed-jasper</artifactId>
+			<!-- <scope>provided</scope> -->
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>jstl</artifactId>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<finalName>${project.artifactId}</finalName>
+	</build>
+
+
+</project>

spring-data-spring-security/src/main/java/com/baeldung/AppConfig.java

@@ -0,0 +1,64 @@
+package com.baeldung;
+
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+import org.springframework.jdbc.datasource.DriverManagerDataSource;
+import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+
+@SpringBootApplication
+@PropertySource("classpath:persistence-h2.properties")
+@EnableJpaRepositories(basePackages = { "com.baeldung.data.repositories" })
+@EnableWebMvc
+@Import(SpringSecurityConfig.class)
+public class AppConfig extends WebMvcConfigurerAdapter {
+
+    @Autowired
+    private Environment env;
+
+    @Bean
+    public DataSource dataSource() {
+        final DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        dataSource.setDriverClassName(env.getProperty("driverClassName"));
+        dataSource.setUrl(env.getProperty("url"));
+        dataSource.setUsername(env.getProperty("user"));
+        dataSource.setPassword(env.getProperty("password"));
+        return dataSource;
+    }
+
+    @Bean
+    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
+        final LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
+        em.setDataSource(dataSource());
+        em.setPackagesToScan(new String[] { "com.baeldung.models" });
+        em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
+        em.setJpaProperties(additionalProperties());
+        return em;
+    }
+
+    final Properties additionalProperties() {
+        final Properties hibernateProperties = new Properties();
+        if (env.getProperty("hibernate.hbm2ddl.auto") != null) {
+            hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        }
+        if (env.getProperty("hibernate.dialect") != null) {
+            hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        }
+        if (env.getProperty("hibernate.show_sql") != null) {
+            hibernateProperties.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
+        }
+        return hibernateProperties;
+    }
+
+}

spring-data-spring-security/src/main/java/com/baeldung/SpringSecurityConfig.java

@@ -0,0 +1,89 @@
+package com.baeldung;
+
+import javax.annotation.PostConstruct;
+import javax.sql.DataSource;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.builders.WebSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.data.repository.query.SecurityEvaluationContextExtension;
+import org.springframework.web.context.WebApplicationContext;
+
+import com.baeldung.security.AuthenticationSuccessHandlerImpl;
+import com.baeldung.security.CustomUserDetailsService;
+
+@Configuration
+@EnableWebSecurity
+@ComponentScan("com.baeldung.security")
+public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {
+
+    @Autowired
+    private WebApplicationContext applicationContext;
+    private CustomUserDetailsService userDetailsService;
+    @Autowired
+    private AuthenticationSuccessHandlerImpl successHandler;
+    @Autowired
+    private DataSource dataSource;
+
+    @PostConstruct
+    public void completeSetup() {
+        userDetailsService = applicationContext.getBean(CustomUserDetailsService.class);
+    }
+
+    @Override
+    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
+        auth.userDetailsService(userDetailsService)
+            .passwordEncoder(encoder())
+            .and()
+            .authenticationProvider(authenticationProvider())
+            .jdbcAuthentication()
+            .dataSource(dataSource);
+    }
+
+    @Override
+    public void configure(WebSecurity web) throws Exception {
+        web.ignoring()
+            .antMatchers("/resources/**");
+    }
+
+    @Override
+    protected void configure(final HttpSecurity http) throws Exception {
+        http.authorizeRequests()
+            .antMatchers("/login")
+            .permitAll()
+            .and()
+            .formLogin()
+            .permitAll()
+            .successHandler(successHandler)
+            .and()
+            .csrf()
+            .disable();
+    }
+
+    @Bean
+    public DaoAuthenticationProvider authenticationProvider() {
+        final DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
+        authProvider.setUserDetailsService(userDetailsService);
+        authProvider.setPasswordEncoder(encoder());
+        return authProvider;
+    }
+
+    @Bean
+    public PasswordEncoder encoder() {
+        return new BCryptPasswordEncoder(11);
+    }
+
+    @Bean
+    public SecurityEvaluationContextExtension securityEvaluationContextExtension() {
+        return new SecurityEvaluationContextExtension();
+    }
+}

spring-data-spring-security/src/main/java/com/baeldung/data/repositories/TweetRepository.java

@@ -0,0 +1,14 @@
+package com.baeldung.data.repositories;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.PagingAndSortingRepository;
+
+import com.baeldung.models.Tweet;
+
+public interface TweetRepository extends PagingAndSortingRepository<Tweet, Long> {
+
+    @Query("select twt from Tweet twt  JOIN twt.likes as lk where lk = ?#{ principal?.username } or twt.owner = ?#{ principal?.username }")
+    Page<Tweet> getMyTweetsAndTheOnesILiked(Pageable pageable);
+}

spring-data-spring-security/src/main/java/com/baeldung/data/repositories/UserRepository.java

@@ -0,0 +1,27 @@
+package com.baeldung.data.repositories;
+
+import java.util.Date;
+import java.util.List;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.baeldung.models.AppUser;
+import com.baeldung.models.Tweet;
+
+public interface UserRepository extends CrudRepository<AppUser, Long> {
+    AppUser findByUsername(String username);
+
+    List<AppUser> findByName(String name);
+
+    @Query("UPDATE AppUser u SET u.lastLogin=:lastLogin WHERE u.username = ?#{ principal?.username }")
+    @Modifying
+    @Transactional
+    public void updateLastLogin(@Param("lastLogin") Date lastLogin);
+}

spring-data-spring-security/src/main/java/com/baeldung/models/AppUser.java

@@ -0,0 +1,83 @@
+package com.baeldung.models;
+
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class AppUser {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+
+    private String name;
+    @Column(unique = true)
+    private String username;
+    private String password;
+    private boolean enabled = true;
+    private Date lastLogin;
+
+    private AppUser() {
+    }
+
+    public AppUser(String name, String email, String password) {
+        this.username = email;
+        this.name = name;
+        this.password = password;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public Date getLastLogin() {
+        return lastLogin;
+    }
+
+    public void setLastLogin(Date lastLogin) {
+        this.lastLogin = lastLogin;
+    }
+}

spring-data-spring-security/src/main/java/com/baeldung/models/Tweet.java

@@ -0,0 +1,63 @@
+package com.baeldung.models;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Tweet {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+    private String tweet;
+    private String owner;
+    @ElementCollection(targetClass = String.class, fetch = FetchType.EAGER)
+    private Set<String> likes = new HashSet();
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    private Tweet() {
+    }
+
+    public Tweet(String tweet, String owner) {
+        this.tweet = tweet;
+        this.owner = owner;
+    }
+
+    public String getTweet() {
+        return tweet;
+    }
+
+    public void setTweet(String tweet) {
+        this.tweet = tweet;
+    }
+
+    public String getOwner() {
+        return owner;
+    }
+
+    public void setOwner(String owner) {
+        this.owner = owner;
+    }
+
+    public Set<String> getLikes() {
+        return likes;
+    }
+
+    public void setLikes(Set<String> likes) {
+        this.likes = likes;
+    }
+
+}

spring-data-spring-security/src/main/java/com/baeldung/security/AppUserPrincipal.java

@@ -0,0 +1,67 @@
+package com.baeldung.security;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import com.baeldung.models.AppUser;
+
+public class AppUserPrincipal implements UserDetails {
+
+    private final AppUser user;
+
+    //
+
+    public AppUserPrincipal(AppUser user) {
+        this.user = user;
+    }
+
+    //
+
+    @Override
+    public String getUsername() {
+        return user.getUsername();
+    }
+
+    @Override
+    public String getPassword() {
+        return user.getPassword();
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        final List<GrantedAuthority> authorities = Collections.singletonList(new SimpleGrantedAuthority("User"));
+        return authorities;
+    }
+
+    @Override
+    public boolean isAccountNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isAccountNonLocked() {
+        return true;
+    }
+
+    @Override
+    public boolean isCredentialsNonExpired() {
+        return true;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return true;
+    }
+
+    //
+
+    public AppUser getAppUser() {
+        return user;
+    }
+
+}

spring-data-spring-security/src/main/java/com/baeldung/security/AuthenticationSuccessHandlerImpl.java

@@ -0,0 +1,28 @@
+package com.baeldung.security;
+
+import java.io.IOException;
+import java.util.Date;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
+import org.springframework.stereotype.Component;
+
+import com.baeldung.data.repositories.UserRepository;
+
+@Component
+public class AuthenticationSuccessHandlerImpl implements AuthenticationSuccessHandler {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Override
+    public void onAuthenticationSuccess(HttpServletRequest arg0, HttpServletResponse arg1, Authentication arg2) throws IOException, ServletException {
+        userRepository.updateLastLogin(new Date());
+    }
+
+}

spring-data-spring-security/src/main/java/com/baeldung/security/CustomUserDetailsService.java

@@ -0,0 +1,40 @@
+package com.baeldung.security;
+
+import javax.annotation.PostConstruct;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+import org.springframework.web.context.WebApplicationContext;
+
+import com.baeldung.data.repositories.UserRepository;
+import com.baeldung.models.AppUser;
+
+@Service
+public class CustomUserDetailsService implements UserDetailsService {
+
+    @Autowired
+    private WebApplicationContext applicationContext;
+    private UserRepository userRepository;
+
+    public CustomUserDetailsService() {
+        super();
+    }
+
+    @PostConstruct
+    public void completeSetup() {
+        userRepository = applicationContext.getBean(UserRepository.class);
+    }
+
+    @Override
+    public UserDetails loadUserByUsername(final String username) {
+        final AppUser appUser = userRepository.findByUsername(username);
+        if (appUser == null) {
+            throw new UsernameNotFoundException(username);
+        }
+        return new AppUserPrincipal(appUser);
+    }
+
+}

spring-data-spring-security/src/main/java/com/baeldung/util/DummyContentUtil.java

@@ -0,0 +1,63 @@
+package com.baeldung.util;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Random;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+import com.baeldung.models.AppUser;
+import com.baeldung.models.Tweet;
+
+public class DummyContentUtil {
+    
+    public static final List<AppUser> generateDummyUsers() {
+        List<AppUser> appUsers = new ArrayList<>();
+        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+        appUsers.add(new AppUser("Lionel Messi", "lionel@messi.com", passwordEncoder.encode("li1234")));
+        appUsers.add(new AppUser("Cristiano Ronaldo", "cristiano@ronaldo.com", passwordEncoder.encode("c1234")));
+        appUsers.add(new AppUser("Neymar Dos Santos", "neymar@neymar.com", passwordEncoder.encode("n1234")));
+        appUsers.add(new AppUser("Luiz Suarez", "luiz@suarez.com", passwordEncoder.encode("lu1234")));
+        appUsers.add(new AppUser("Andres Iniesta", "andres@iniesta.com", passwordEncoder.encode("a1234")));
+        appUsers.add(new AppUser("Ivan Rakitic", "ivan@rakitic.com", passwordEncoder.encode("i1234")));
+        appUsers.add(new AppUser("Ousman Dembele", "ousman@dembele.com", passwordEncoder.encode("o1234")));
+        appUsers.add(new AppUser("Sergio Busquet", "sergio@busquet.com", passwordEncoder.encode("s1234")));
+        appUsers.add(new AppUser("Gerard Pique", "gerard@pique.com", passwordEncoder.encode("g1234")));
+        appUsers.add(new AppUser("Ter Stergen", "ter@stergen.com", passwordEncoder.encode("t1234")));
+        return appUsers;
+    }
+
+    public static final List<Tweet> generateDummyTweets(List<AppUser> users) {
+        List<Tweet> tweets = new ArrayList<>();
+        Random random = new Random();
+        IntStream.range(0, 9)
+            .sequential()
+            .forEach(i -> {
+                Tweet twt = new Tweet(String.format("Tweet %d", i), users.get(random.nextInt(users.size()))
+                    .getUsername());
+                twt.getLikes()
+                    .addAll(users.subList(0, random.nextInt(users.size()))
+                        .stream()
+                        .map(AppUser::getUsername)
+                        .collect(Collectors.toSet()));
+                tweets.add(twt);
+            });
+        return tweets;
+    }
+
+    public static Collection<GrantedAuthority> getAuthorities() {
+        Collection<GrantedAuthority> grantedAuthorities = new ArrayList<GrantedAuthority>();
+        GrantedAuthority grantedAuthority = new GrantedAuthority() {
+            public String getAuthority() {
+                return "ROLE_USER";
+            }
+        };
+        grantedAuthorities.add(grantedAuthority);
+        return grantedAuthorities;
+    }
+
+}

spring-data-spring-security/src/main/resources/persistence-h2.properties

@@ -0,0 +1,8 @@
+driverClassName=org.h2.Driver
+url=jdbc:h2:mem:myDb;DB_CLOSE_DELAY=-1
+username=sa
+password=
+
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=false
+hibernate.hbm2ddl.auto=create-drop

spring-data-spring-security/src/test/java/com/baeldung/relationships/SpringDataWithSecurityTest.java

@@ -0,0 +1,100 @@
+package com.baeldung.relationships;
+
+import static org.springframework.util.Assert.isTrue;
+
+import java.util.Date;
+import java.util.List;
+
+import javax.servlet.ServletContext;
+
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.dao.InvalidDataAccessApiUsageException;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+
+import com.baeldung.AppConfig;
+import com.baeldung.data.repositories.TweetRepository;
+import com.baeldung.data.repositories.UserRepository;
+import com.baeldung.models.AppUser;
+import com.baeldung.models.Tweet;
+import com.baeldung.security.AppUserPrincipal;
+import com.baeldung.util.DummyContentUtil;
+
+@RunWith(SpringRunner.class)
+@WebAppConfiguration
+@ContextConfiguration
+@DirtiesContext
+public class SpringDataWithSecurityTest {
+    AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
+    @Autowired
+    private ServletContext servletContext;
+    private static UserRepository userRepository;
+    private static TweetRepository tweetRepository;
+
+    @Before
+    public void testInit() {
+        ctx.register(AppConfig.class);
+        ctx.setServletContext(servletContext);
+        ctx.refresh();
+        userRepository = ctx.getBean(UserRepository.class);
+        tweetRepository = ctx.getBean(TweetRepository.class);
+        List<AppUser> appUsers = (List<AppUser>) userRepository.save(DummyContentUtil.generateDummyUsers());
+        tweetRepository.save(DummyContentUtil.generateDummyTweets(appUsers));
+    }
+
+    @AfterClass
+    public static void tearDown() {
+        tweetRepository.deleteAll();
+        userRepository.deleteAll();
+    }
+
+    @Test
+    public void givenAppUser_whenLoginSuccessful_shouldUpdateLastLogin() {
+        AppUser appUser = userRepository.findByUsername("lionel@messi.com");
+        Authentication auth = new UsernamePasswordAuthenticationToken(new AppUserPrincipal(appUser), null, DummyContentUtil.getAuthorities());
+        SecurityContextHolder.getContext()
+            .setAuthentication(auth);
+        userRepository.updateLastLogin(new Date());
+    }
+
+    @Test(expected = InvalidDataAccessApiUsageException.class)
+    public void givenNoAppUserInSecurityContext_whenUpdateLastLoginAttempted_shouldFail() {
+        userRepository.updateLastLogin(new Date());
+    }
+
+    @Test
+    public void givenAppUser_whenLoginSuccessful_shouldReadMyPagedTweets() {
+        AppUser appUser = userRepository.findByUsername("lionel@messi.com");
+        Authentication auth = new UsernamePasswordAuthenticationToken(new AppUserPrincipal(appUser), null, DummyContentUtil.getAuthorities());
+        SecurityContextHolder.getContext()
+            .setAuthentication(auth);
+        Page<Tweet> page = null;
+        do {
+            page = tweetRepository.getMyTweetsAndTheOnesILiked(new PageRequest(page != null ? page.getNumber() + 1 : 0, 5));
+            for (Tweet twt : page.getContent()) {
+                isTrue((twt.getOwner() == appUser.getUsername()) || (twt.getLikes()
+                    .contains(appUser.getUsername())), "I do not have any Tweets");
+            }
+        } while (page.hasNext());
+    }
+
+    @Test(expected = InvalidDataAccessApiUsageException.class)
+    public void givenNoAppUser_whenPaginatedResultsRetrievalAttempted_shouldFail() {
+        Page<Tweet> page = null;
+        do {
+            page = tweetRepository.getMyTweetsAndTheOnesILiked(new PageRequest(page != null ? page.getNumber() + 1 : 0, 5));
+        } while (page != null && page.hasNext());
+    }
+}