BAEL-3091: The Prototype Pattern in Java (changed code based on valid comments from a reader)

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/SpringBootH2IntegrationTest.java

@@ -0,0 +1,33 @@
+package com.baeldung;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.config.H2JpaConfig;
+import com.baeldung.boot.domain.GenericEntity;
+import com.baeldung.boot.repository.GenericEntityRepository;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = { Application.class, H2JpaConfig.class })
+public class SpringBootH2IntegrationTest {
+
+    @Autowired
+    private GenericEntityRepository genericEntityRepository;
+
+    @Test
+    public void givenGenericEntityRepository_whenSaveAndRetreiveEntity_thenOK() {
+        GenericEntity genericEntity = genericEntityRepository.save(new GenericEntity("test"));
+        GenericEntity foundEntity = genericEntityRepository.findById(genericEntity.getId()).orElse(null);
+
+        assertNotNull(foundEntity);
+        assertEquals(genericEntity.getValue(), foundEntity.getValue());
+    }
+
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/SpringBootJPAIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.domain.GenericEntity;
+import com.baeldung.boot.repository.GenericEntityRepository;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class SpringBootJPAIntegrationTest {
+    @Autowired
+    private GenericEntityRepository genericEntityRepository;
+
+    @Test
+    public void givenGenericEntityRepository_whenSaveAndRetreiveEntity_thenOK() {
+        GenericEntity genericEntity = genericEntityRepository.save(new GenericEntity("test"));
+        GenericEntity foundEntity = genericEntityRepository.findById(genericEntity.getId()).orElse(null);
+        assertNotNull(foundEntity);
+        assertEquals(genericEntity.getValue(), foundEntity.getValue());
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/SpringBootProfileIntegrationTest.java

@@ -0,0 +1,31 @@
+package com.baeldung;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.domain.GenericEntity;
+import com.baeldung.boot.repository.GenericEntityRepository;
+import com.baeldung.config.H2TestProfileJPAConfig;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = { Application.class, H2TestProfileJPAConfig.class })
+@ActiveProfiles("test")
+public class SpringBootProfileIntegrationTest {
+    @Autowired
+    private GenericEntityRepository genericEntityRepository;
+
+    @Test
+    public void givenGenericEntityRepository_whenSaveAndRetreiveEntity_thenOK() {
+        GenericEntity genericEntity = genericEntityRepository.save(new GenericEntity("test"));
+        GenericEntity foundEntity = genericEntityRepository.findById(genericEntity.getId()).orElse(null);
+        assertNotNull(foundEntity);
+        assertEquals(genericEntity.getValue(), foundEntity.getValue());
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/boot/naming/LegacyJpaImplNamingIntegrationTest.java

@@ -0,0 +1,62 @@
+package com.baeldung.boot.naming;
+
+import org.assertj.core.api.SoftAssertions;
+import org.hibernate.boot.Metadata;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.mapping.Table;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.naming.NamingConfig.Config;
+import com.baeldung.boot.naming.entity.Account;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+@TestPropertySource(properties = {
+  "spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl",
+  "spring.jpa.hibernate.naming.implicit-strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyJpaImpl"
+})
+@Import(Config.class)
+public class LegacyJpaImplNamingIntegrationTest extends NamingConfig {
+
+    @Test
+    public void givenLegacyJpaImplNamingStrategy_whenCreateDatabase_thenGetStrategyNames() {
+        Metadata metadata = MetadataExtractorIntegrator.INSTANCE.getMetadata();
+        String entity = Account.class.getCanonicalName();
+        PersistentClass persistentClass = metadata.getEntityBinding(entity);
+        Table table = persistentClass.getTable();
+        String physicalNameExpected = "Secondary_Email";
+        String implicitNameExpected = "defaultEmail";
+        String tableNameExpected = "Account";
+
+        String tableNameCreated = table.getName();
+        boolean columnNameIsQuoted = table
+          .getColumn(3)
+          .isQuoted();
+        String physicalNameCreated = table
+          .getColumn(3)
+          .getName();
+        String implicitNameCreated = table
+          .getColumn(2)
+          .getName();
+
+        SoftAssertions.assertSoftly(softly -> {
+            softly
+              .assertThat(columnNameIsQuoted)
+              .isTrue();
+            softly
+              .assertThat(tableNameCreated)
+              .isEqualTo(tableNameExpected);
+            softly
+              .assertThat(physicalNameCreated)
+              .isEqualTo(physicalNameExpected);
+            softly
+              .assertThat(implicitNameCreated)
+              .isEqualTo(implicitNameExpected);
+        });
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/boot/naming/NamingConfig.java

@@ -0,0 +1,15 @@
+package com.baeldung.boot.naming;
+
+import org.springframework.boot.autoconfigure.orm.jpa.HibernatePropertiesCustomizer;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+
+public class NamingConfig {
+    @TestConfiguration
+    static class Config {
+        @Bean
+        public HibernatePropertiesCustomizer customizer() {
+            return new HibernateConfig();
+        }
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/boot/naming/SpringBootDefaultNamingIntegrationTest.java

@@ -0,0 +1,56 @@
+package com.baeldung.boot.naming;
+
+import org.assertj.core.api.SoftAssertions;
+import org.hibernate.boot.Metadata;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.mapping.Table;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.naming.NamingConfig.Config;
+import com.baeldung.boot.naming.entity.Account;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+@TestPropertySource(properties = {
+  "spring.jpa.hibernate.naming.physical-strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy",
+  "spring.jpa.hibernate.naming.implicit-strategy=org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy"
+})
+@Import(Config.class)
+public class SpringBootDefaultNamingIntegrationTest extends NamingConfig {
+
+    @Test
+    public void givenDefaultBootNamingStrategy_whenCreateDatabase_thenGetStrategyNames() {
+        Metadata metadata = MetadataExtractorIntegrator.INSTANCE.getMetadata();
+        String entity = Account.class.getCanonicalName();
+        PersistentClass persistentClass = metadata.getEntityBinding(entity);
+        Table table = persistentClass.getTable();
+        String physicalNameExpected = "secondary_email";
+        String implicitNameExpected = "default_email";
+        String tableNameExpected = "account";
+
+        String tableNameCreated = table.getName();
+        String physicalNameCreated = table
+          .getColumn(3)
+          .getName();
+        String implicitNameCreated = table
+          .getColumn(2)
+          .getName();
+
+        SoftAssertions softly = new SoftAssertions();
+        softly
+          .assertThat(tableNameCreated)
+          .isEqualTo(tableNameExpected);
+        softly
+          .assertThat(physicalNameCreated)
+          .isEqualTo(physicalNameExpected);
+        softly
+          .assertThat(implicitNameCreated)
+          .isEqualTo(implicitNameExpected);
+        softly.assertAll();
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/boot/naming/StrategyLegacyHbmImplIntegrationTest.java

@@ -0,0 +1,63 @@
+package com.baeldung.boot.naming;
+
+import com.baeldung.boot.naming.MetadataExtractorIntegrator;
+import com.baeldung.boot.naming.NamingConfig.Config;
+import com.baeldung.boot.naming.entity.Preference;
+
+import org.assertj.core.api.SoftAssertions;
+import org.hibernate.boot.Metadata;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.mapping.Table;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.Collection;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+@TestPropertySource(properties = {
+  "spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl",
+  "spring.jpa.hibernate.naming.implicit-strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyHbmImpl",
+})
+@Import(Config.class)
+public class StrategyLegacyHbmImplIntegrationTest extends NamingConfig {
+
+    @Test
+    public void givenLegacyHbmImplNamingNamingStrategy_whenCreateDatabase_thenGetStrategyNames() {
+        Metadata metadata = MetadataExtractorIntegrator.INSTANCE.getMetadata();
+        String entity = Preference.class.getCanonicalName();
+        PersistentClass persistentClass = metadata.getEntityBinding(entity);
+        Collection<Table> tables = metadata
+          .getDatabase()
+          .getDefaultNamespace()
+          .getTables();
+        Table preferenceTable = persistentClass.getTable();
+        String tableNameExpected = "Account_preferences";
+        Table accountPreferencesTable = tables
+          .stream()
+          .filter(table -> table
+            .getName()
+            .equals(tableNameExpected))
+          .findFirst()
+          .get();
+        String implicitNameExpected = "account";
+
+        String implicitNameCreated = preferenceTable
+          .getColumn(3)
+          .getName();
+        String tableNameCreated = accountPreferencesTable.getName();
+
+        SoftAssertions.assertSoftly(softly -> {
+            softly
+              .assertThat(implicitNameCreated)
+              .isEqualTo(implicitNameExpected);
+            softly
+              .assertThat(tableNameCreated)
+              .isEqualTo(tableNameExpected);
+        });
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/boot/test/UserRepositoryMultipleSqlFilesIntTest.java

@@ -0,0 +1,34 @@
+package com.baeldung.boot.test;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.domain.User;
+import com.baeldung.boot.repository.UserRepository;
+
+import java.util.Collection;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Created by adam.
+ */
+@RunWith(SpringRunner.class)
+@DataJpaTest
+@ActiveProfiles("multiplesqlfiles")
+public class UserRepositoryMultipleSqlFilesIntTest {
+
+    @Autowired private UserRepository userRepository;
+
+    @Test
+    public void givenTwoImportFilesWhenFindAllShouldReturnSixUsers() {
+        Collection<User> users = userRepository.findAll();
+
+        assertThat(users.size()).isEqualTo(6);
+    }
+
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/config/H2TestProfileJPAConfig.java

@@ -0,0 +1,68 @@
+package com.baeldung.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+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.JpaTransactionManager;
+import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import javax.persistence.EntityManagerFactory;
+import javax.sql.DataSource;
+import java.util.Properties;
+
+@Configuration
+@EnableJpaRepositories(basePackages = { "com.baeldung.repository", "com.baeldung.boot.repository" })
+@EnableTransactionManagement
+@Profile("test") //only required to allow H2JpaConfig and H2TestProfileJPAConfig to coexist in same project
+                 //this demo project is showcasing several ways to achieve the same end, and class-level
+                 //Profile annotations are only necessary because the different techniques are sharing a project
+public class H2TestProfileJPAConfig {
+
+    @Autowired
+    private Environment env;
+
+    @Bean
+    @Profile("test")
+    public DataSource dataSource() {
+        final DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        dataSource.setDriverClassName("org.h2.Driver");
+        dataSource.setUrl("jdbc:h2:mem:db;DB_CLOSE_DELAY=-1");
+        dataSource.setUsername("sa");
+        dataSource.setPassword("sa");
+
+        return dataSource;
+    }
+
+    @Bean
+    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
+        final LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
+        em.setDataSource(dataSource());
+        em.setPackagesToScan(new String[] { "com.baeldung.boot.domain" });
+        em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
+        em.setJpaProperties(additionalProperties());
+        return em;
+    }
+
+    @Bean
+    JpaTransactionManager transactionManager(final EntityManagerFactory entityManagerFactory) {
+        final JpaTransactionManager transactionManager = new JpaTransactionManager();
+        transactionManager.setEntityManagerFactory(entityManagerFactory);
+        return transactionManager;
+    }
+
+    final Properties additionalProperties() {
+        final Properties hibernateProperties = new Properties();
+
+        hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
+        hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
+        hibernateProperties.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
+
+        return hibernateProperties;
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springbootcrudapp/application/tests/UserControllerUnitTest.java

@@ -0,0 +1,81 @@
+package com.baeldung.springbootcrudapp.application.tests;
+
+import com.baeldung.springbootcrudapp.application.controllers.UserController;
+import com.baeldung.springbootcrudapp.application.entities.User;
+import com.baeldung.springbootcrudapp.application.repositories.UserRepository;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+
+public class UserControllerUnitTest {
+
+    private static UserController userController;
+    private static UserRepository mockedUserRepository;
+    private static BindingResult mockedBindingResult;
+    private static Model mockedModel;
+
+    @BeforeClass
+    public static void setUpUserControllerInstance() {
+        mockedUserRepository = mock(UserRepository.class);
+        mockedBindingResult = mock(BindingResult.class);
+        mockedModel = mock(Model.class);
+        userController = new UserController(mockedUserRepository);
+    }
+
+    @Test
+    public void whenCalledshowSignUpForm_thenCorrect() {
+        User user = new User("John", "john@domain.com");
+
+        assertThat(userController.showSignUpForm(user)).isEqualTo("add-user");
+    }
+    
+    @Test
+    public void whenCalledaddUserAndValidUser_thenCorrect() {
+        User user = new User("John", "john@domain.com");
+
+        when(mockedBindingResult.hasErrors()).thenReturn(false);
+
+        assertThat(userController.addUser(user, mockedBindingResult, mockedModel)).isEqualTo("index");
+    }
+
+    @Test
+    public void whenCalledaddUserAndInValidUser_thenCorrect() {
+        User user = new User("John", "john@domain.com");
+
+        when(mockedBindingResult.hasErrors()).thenReturn(true);
+
+        assertThat(userController.addUser(user, mockedBindingResult, mockedModel)).isEqualTo("add-user");
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void whenCalledshowUpdateForm_thenIllegalArgumentException() {
+        assertThat(userController.showUpdateForm(0, mockedModel)).isEqualTo("update-user");
+    }
+    
+    @Test
+    public void whenCalledupdateUserAndValidUser_thenCorrect() {
+        User user = new User("John", "john@domain.com");
+
+        when(mockedBindingResult.hasErrors()).thenReturn(false);
+
+        assertThat(userController.updateUser(1l, user, mockedBindingResult, mockedModel)).isEqualTo("index");
+    }
+
+    @Test
+    public void whenCalledupdateUserAndInValidUser_thenCorrect() {
+        User user = new User("John", "john@domain.com");
+
+        when(mockedBindingResult.hasErrors()).thenReturn(true);
+
+        assertThat(userController.updateUser(1l, user, mockedBindingResult, mockedModel)).isEqualTo("update-user");
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void whenCalleddeleteUser_thenIllegalArgumentException() {
+        assertThat(userController.deleteUser(1l, mockedModel)).isEqualTo("index");
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springbootcrudapp/application/tests/UserUnitTest.java

@@ -0,0 +1,46 @@
+package com.baeldung.springbootcrudapp.application.tests;
+
+import com.baeldung.springbootcrudapp.application.entities.User;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.Test;
+
+public class UserUnitTest {
+    
+    @Test
+    public void whenCalledGetName_thenCorrect() {
+        User user = new User("Julie", "julie@domain.com");
+        
+        assertThat(user.getName()).isEqualTo("Julie");
+    }
+    
+    @Test
+    public void whenCalledGetEmail_thenCorrect() {
+        User user = new User("Julie", "julie@domain.com");
+        
+        assertThat(user.getEmail()).isEqualTo("julie@domain.com");
+    }
+    
+    @Test
+    public void whenCalledSetName_thenCorrect() {
+        User user = new User("Julie", "julie@domain.com");
+        
+        user.setName("John");
+        
+        assertThat(user.getName()).isEqualTo("John");
+    }
+    
+    @Test
+    public void whenCalledSetEmail_thenCorrect() {
+        User user = new User("Julie", "julie@domain.com");
+        
+        user.setEmail("john@domain.com");
+        
+        assertThat(user.getEmail()).isEqualTo("john@domain.com");
+    }
+    
+    @Test
+    public void whenCalledtoString_thenCorrect() {
+        User user = new User("Julie", "julie@domain.com");
+        assertThat(user.toString()).isEqualTo("User{id=0, name=Julie, email=julie@domain.com}");
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springbootdatasourceconfig/application/tests/UserRepositoryIntegrationTest.java

@@ -0,0 +1,31 @@
+package com.baeldung.springbootdatasourceconfig.application.tests;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.springbootdatasourceconfig.application.entities.User;
+import com.baeldung.springbootdatasourceconfig.application.repositories.UserRepository;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+public class UserRepositoryIntegrationTest {
+    
+    @Autowired
+    private UserRepository userRepository;
+    
+    @Test
+    public void whenCalledSave_thenCorrectNumberOfUsers() {
+        userRepository.save(new User("Bob", "bob@domain.com"));
+        List<User> users = (List<User>) userRepository.findAll();
+        
+        // 2 additional users are saved in the CommandLineRunner bean
+        assertThat(users.size()).isEqualTo(3);
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springboothibernate/application/tests/BookServiceUnitTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.springboothibernate.application.tests;
+
+import com.baeldung.springboothibernate.application.models.Book;
+import com.baeldung.springboothibernate.application.services.BookService;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.List;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class BookServiceUnitTest {
+
+    @Autowired
+    private BookService bookService;
+
+    @Test
+    public void whenApplicationStarts_thenHibernateCreatesInitialRecords() {
+        List<Book> books = bookService.list();
+
+        Assert.assertEquals(books.size(), 3);
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springboothsqldb/application/tests/CustomerControllerUnitTest.java

@@ -0,0 +1,61 @@
+package com.baeldung.springboothsqldb.application.tests;
+
+import com.baeldung.springboothsqldb.application.entities.Customer;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectWriter;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import java.nio.charset.Charset;
+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.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+public class CustomerControllerUnitTest {
+
+    private static MediaType MEDIA_TYPE_JSON;
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Before
+    public void setUpJsonMediaType() {
+        MEDIA_TYPE_JSON = new MediaType(MediaType.APPLICATION_JSON.getType(), MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
+
+    }
+
+    @Test
+    public void whenPostHttpRequesttoCustomers_thenStatusOK() throws Exception {
+        Customer customer = new Customer("John", "john@domain.com");
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.configure(SerializationFeature.WRAP_ROOT_VALUE, false);
+        ObjectWriter objectWriter = mapper.writer().withDefaultPrettyPrinter();
+        String requestJson = objectWriter.writeValueAsString(customer);
+        
+        this.mockMvc
+                .perform(MockMvcRequestBuilders.post("/customers")
+                        .contentType(MEDIA_TYPE_JSON)
+                        .content(requestJson)
+                )
+                
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+    
+    @Test
+    public void whenGetHttpRequesttoCustomers_thenStatusOK() throws Exception {
+        this.mockMvc
+                .perform(MockMvcRequestBuilders.get("/customers"))
+                
+                .andExpect(MockMvcResultMatchers.content().contentType(MEDIA_TYPE_JSON))
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springbootinitialload/tests/SpringBootInitialLoadIntegrationTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.springbootinitialload.tests;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.jdbc.Sql;
+import org.springframework.test.context.jdbc.SqlConfig;
+import org.springframework.test.context.jdbc.SqlConfig.TransactionMode;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.repository.EmployeeRepository;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+@Sql({"/employees_schema.sql", "/import_employees.sql"})
+public class SpringBootInitialLoadIntegrationTest {
+
+    @Autowired
+    private EmployeeRepository employeeRepository;
+
+    @Test
+    public void testLoadDataForTestClass() {
+        assertEquals(3, employeeRepository.findAll()
+            .size());
+    }
+
+    @Test
+    @Sql(scripts = {"/import_senior_employees.sql"}, config = @SqlConfig(encoding = "utf-8", transactionMode = TransactionMode.ISOLATED))
+    public void testLoadDataForTestCase() {
+        assertEquals(5, employeeRepository.findAll()
+            .size());
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/springbootinitialload/tests/SpringBootSqlGroupAnnotationIntegrationTest.java

@@ -0,0 +1,31 @@
+package com.baeldung.springbootinitialload.tests;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.jdbc.Sql;
+import org.springframework.test.context.jdbc.SqlConfig;
+import org.springframework.test.context.jdbc.SqlConfig.TransactionMode;
+import org.springframework.test.context.jdbc.SqlGroup;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.boot.Application;
+import com.baeldung.boot.repository.EmployeeRepository;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+@SqlGroup({ @Sql(scripts = "/employees_schema.sql", config = @SqlConfig(transactionMode = TransactionMode.ISOLATED)),
+            @Sql("/import_employees.sql")})
+public class SpringBootSqlGroupAnnotationIntegrationTest {
+
+    @Autowired
+    private EmployeeRepository employeeRepository;
+
+    @Test
+    public void testLoadDataForTestCase() {
+        assertEquals(3, employeeRepository.findAll().size());
+    }
+}

persistence-modules/spring-boot-persistence/src/test/java/com/baeldung/tomcatconnectionpool/test/application/SpringBootTomcatConnectionPoolIntegrationTest.java

@@ -0,0 +1,25 @@
+package com.baeldung.tomcatconnectionpool.test.application;
+
+import javax.sql.DataSource;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.tomcatconnectionpool.application.SpringBootConsoleApplication;
+
+import static org.assertj.core.api.Assertions.*;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = {SpringBootConsoleApplication.class})
+public class SpringBootTomcatConnectionPoolIntegrationTest {
+    
+    @Autowired
+    private DataSource dataSource;
+    
+    @Test
+    public void givenTomcatConnectionPoolInstance_whenCheckedPoolClassName_thenCorrect() {
+        assertThat(dataSource.getClass().getName()).isEqualTo("org.apache.tomcat.jdbc.pool.DataSource");
+    }
+}

persistence-modules/spring-boot-persistence/src/test/resources/application-multiplesqlfiles.properties

@@ -0,0 +1 @@
+spring.jpa.properties.hibernate.hbm2ddl.import_files=import_active_users.sql,import_inactive_users.sql

persistence-modules/spring-boot-persistence/src/test/resources/application.properties

@@ -0,0 +1,16 @@
+# spring.datasource.x
+spring.datasource.driver-class-name=org.h2.Driver
+spring.datasource.url=jdbc:h2:mem:db;DB_CLOSE_DELAY=-1
+spring.datasource.username=sa
+spring.datasource.password=sa
+
+# hibernate.X
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop
+hibernate.cache.use_second_level_cache=true
+hibernate.cache.use_query_cache=true
+hibernate.cache.region.factory_class=org.hibernate.cache.ehcache.EhCacheRegionFactory
+
+spring.jpa.properties.hibernate.hbm2ddl.import_files=migrated_users.sql, import_books.sql
+spring.datasource.data=import_*_users.sql

persistence-modules/spring-boot-persistence/src/test/resources/employees_schema.sql

@@ -0,0 +1,8 @@
+drop table EMPLOYEES if exists;
+
+create table EMPLOYEES(
+  ID int not null AUTO_INCREMENT,
+  NAME varchar(100) not null,
+  TITLE varchar(100),
+  PRIMARY KEY ( ID )
+);

persistence-modules/spring-boot-persistence/src/test/resources/import_active_users.sql

@@ -0,0 +1,3 @@
+insert into USERS(name, status, id) values('Peter', 1, 1);
+insert into USERS(name, status, id) values('David', 1, 2);
+insert into USERS(name, status, id) values('Ed', 1, 3);

persistence-modules/spring-boot-persistence/src/test/resources/import_books.sql

@@ -0,0 +1,3 @@
+insert into book values(1, 'The Tartar Steppe');
+insert into book values(2, 'Poem Strip');
+insert into book values(3, 'Restless Nights: Selected Stories of Dino Buzzati');

persistence-modules/spring-boot-persistence/src/test/resources/import_employees.sql

@@ -0,0 +1,3 @@
+insert into EMPLOYEES values(1, 'Harsha', 'Developer');
+insert into EMPLOYEES values(2, 'John', 'Tester');
+insert into EMPLOYEES values(3, 'Ram', 'Manager');

persistence-modules/spring-boot-persistence/src/test/resources/import_inactive_users.sql

@@ -0,0 +1,3 @@
+insert into users(name, status, id) values('Monica', 0, 4);
+insert into users(name, status, id) values('Paul', 0, 5);
+insert into users(name, status, id) values('George', 0, 6);

persistence-modules/spring-boot-persistence/src/test/resources/import_senior_employees.sql

@@ -0,0 +1,2 @@
+insert into EMPLOYEES values(4, 'Eric', 'Senior Developer');
+insert into EMPLOYEES values(5, 'Vidhyaah', 'Senior Manager');

persistence-modules/spring-boot-persistence/src/test/resources/migrated_users.sql

@@ -0,0 +1,3 @@
+insert into USERS(name, status, id) values('Peter', 1, 7);
+insert into USERS(name, status, id) values('David', 1, 8);
+insert into USERS(name, status, id) values('Ed', 1, 9);