renamed back to testing-modules, pulled together testing-modules-2 modules into single module

testing-modules/spring-testing/README.md

@@ -0,0 +1,8 @@
+## Relevant Articles:
+
+- [Mockito.mock() vs @Mock vs @MockBean](http://www.baeldung.com/java-spring-mockito-mock-mockbean)
+- [A Quick Guide to @TestPropertySource](https://www.baeldung.com/spring-test-property-source)
+- [Guide to ReflectionTestUtils for Unit Testing](https://www.baeldung.com/spring-reflection-test-utils)
+- [How to Test the @Scheduled Annotation](https://www.baeldung.com/spring-testing-scheduled-annotation)
+- [Using SpringJUnit4ClassRunner with Parameterized](https://www.baeldung.com/springjunit4classrunner-parameterized)
+- [Override Properties in Spring’s Tests](https://www.baeldung.com/spring-tests-override-properties)

testing-modules/spring-testing/pom.xml

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+<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>org.baeldung</groupId>
+    <artifactId>spring-testing</artifactId>
+    <version>0.1-SNAPSHOT</version>
+    <name>spring-testing</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+
+        <!-- test scoped -->
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>java-hamcrest</artifactId>
+            <version>${hamcrest.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+            <version>LATEST</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>LATEST</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>LATEST</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>LATEST</version>
+        </dependency>
+        <dependency>
+         <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.persistence</groupId>
+            <artifactId>javax.persistence</artifactId>
+            <version>${javax.persistence.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-jpa</artifactId>
+            <version>LATEST</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.awaitility</groupId>
+            <artifactId>awaitility</artifactId>
+            <version>${awaitility.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>${javax.servlet-api.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>spring-testing</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+
+    </build>
+
+    <properties>
+        <!-- testing -->
+        <hamcrest.version>2.0.0.0</hamcrest.version>
+        <awaitility.version>3.1.6</awaitility.version>
+        <junit.jupiter.version>5.4.0</junit.jupiter.version>
+        <spring.version>5.1.4.RELEASE</spring.version>
+        <javax.servlet-api.version>4.0.1</javax.servlet-api.version>
+        <javax.persistence.version>2.1.1</javax.persistence.version>
+    </properties>
+
+</project>

testing-modules/spring-testing/src/main/java/com/baeldung/config/ScheduledConfig.java

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+package com.baeldung.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+@Configuration
+@EnableScheduling
+@ComponentScan("com.baeldung.scheduled")
+public class ScheduledConfig {
+}

testing-modules/spring-testing/src/main/java/com/baeldung/config/WebConfig.java

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+package com.baeldung.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+import javax.servlet.ServletContext;
+
+@EnableWebMvc
+@Configuration
+@ComponentScan(basePackages = {"com.baeldung.controller.parameterized"})
+public class WebConfig {
+
+    @Autowired
+    private ServletContext ctx;
+}

testing-modules/spring-testing/src/main/java/com/baeldung/controller/parameterized/EmployeeRoleController.java

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+package com.baeldung.controller.parameterized;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Controller
+public class EmployeeRoleController {
+
+    private static Map<String, Role> userRoleCache = new HashMap<>();
+
+    static {
+        userRoleCache.put("John", Role.ADMIN);
+        userRoleCache.put("Doe", Role.EMPLOYEE);
+    }
+
+    @RequestMapping(value = "/role/{name}", method = RequestMethod.GET, produces = "application/text")
+    @ResponseBody
+    public String getEmployeeRole(@PathVariable("name") String employeeName) {
+
+        return userRoleCache.get(employeeName).toString();
+    }
+
+    private enum Role {
+        ADMIN, EMPLOYEE
+    }
+}

testing-modules/spring-testing/src/main/java/com/baeldung/overrideproperties/Application.java

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+package com.baeldung.overrideproperties;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

testing-modules/spring-testing/src/main/java/com/baeldung/overrideproperties/resolver/PropertySourceResolver.java

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+package com.baeldung.overrideproperties.resolver;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component
+public class PropertySourceResolver {
+
+    private final String firstProperty;
+    private final String secondProperty;
+
+    public PropertySourceResolver(@Value("${example.firstProperty}") String firstProperty, @Value("${example.secondProperty}") String secondProperty) {
+        this.firstProperty = firstProperty;
+        this.secondProperty = secondProperty;
+    }
+
+    public String getFirstProperty() {
+        return firstProperty;
+    }
+
+    public String getSecondProperty() {
+        return secondProperty;
+    }
+}

testing-modules/spring-testing/src/main/java/com/baeldung/scheduled/Counter.java

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+package com.baeldung.scheduled;
+
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+@Component
+public class Counter {
+    private final AtomicInteger count = new AtomicInteger(0);
+
+    @Scheduled(fixedDelay = 5)
+    public void scheduled() {
+        this.count.incrementAndGet();
+    }
+
+    public int getInvocationCount() {
+        return this.count.get();
+    }
+}

testing-modules/spring-testing/src/main/java/com/baeldung/testpropertysource/ClassUsingProperty.java

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+package com.baeldung.testpropertysource;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ClassUsingProperty {
+    
+    @Value("${baeldung.testpropertysource.one}")
+    private String propertyOne;
+    
+    public String retrievePropertyOne() {
+        return propertyOne;
+    }
+}

testing-modules/spring-testing/src/main/java/org/baeldung/mockito/repository/User.java

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+package org.baeldung.mockito.repository;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+
+    @Id
+    @GeneratedValue
+    private Integer id;
+    private String name;
+    private Integer status;
+
+    public User() {
+    }
+
+    public User(String name, Integer status) {
+        this.name = name;
+        this.status = status;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public void setStatus(Integer status) {
+        this.status = status;
+    }
+}

testing-modules/spring-testing/src/main/java/org/baeldung/mockito/repository/UserRepository.java

@@ -0,0 +1,9 @@
+package org.baeldung.mockito.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository("userRepository")
+public interface UserRepository extends JpaRepository<User, Integer> {
+
+}

testing-modules/spring-testing/src/main/java/org/baeldung/reflectiontestutils/repository/Employee.java

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+package org.baeldung.reflectiontestutils.repository;
+
+public class Employee {
+    private Integer id;
+    private String name;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    private String employeeToString() {
+        return "id: " + getId() + "; name: " + getName();
+    }
+
+}

testing-modules/spring-testing/src/main/java/org/baeldung/reflectiontestutils/repository/EmployeeService.java

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+package org.baeldung.reflectiontestutils.repository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class EmployeeService {
+    @Autowired
+    private HRService hrService;
+
+    public String findEmployeeStatus(Integer employeeId) {
+        return "Employee " + employeeId + " status: " + hrService.getEmployeeStatus(employeeId);
+    }
+}

testing-modules/spring-testing/src/main/java/org/baeldung/reflectiontestutils/repository/HRService.java

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+package org.baeldung.reflectiontestutils.repository;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class HRService {
+
+    public String getEmployeeStatus(Integer employeeId) {
+        return "Inactive";
+    }
+}

testing-modules/spring-testing/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

testing-modules/spring-testing/src/test/java/com/baeldung/controller/parameterized/RoleControllerIntegrationTest.java

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+package com.baeldung.controller.parameterized;
+
+import com.baeldung.config.WebConfig;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultHandlers;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@ContextConfiguration(classes = WebConfig.class)
+public class RoleControllerIntegrationTest {
+
+    @Autowired
+    private WebApplicationContext wac;
+
+    private MockMvc mockMvc;
+
+    private static final String CONTENT_TYPE = "application/text;charset=ISO-8859-1";
+
+    @Before
+    public void setup() throws Exception {
+        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
+    }
+
+    @Test
+    public void givenEmployeeNameJohnWhenInvokeRoleThenReturnAdmin() throws Exception {
+        this.mockMvc.perform(MockMvcRequestBuilders.get("/role/John")).andDo(print()).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(CONTENT_TYPE))
+                .andExpect(MockMvcResultMatchers.content().string("ADMIN"));
+    }
+
+    @Test
+    public void givenEmployeeNameDoeWhenInvokeRoleThenReturnEmployee() throws Exception {
+        this.mockMvc.perform(MockMvcRequestBuilders.get("/role/Doe")).andDo(print()).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(CONTENT_TYPE))
+                .andExpect(MockMvcResultMatchers.content().string("EMPLOYEE"));
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/controller/parameterized/RoleControllerParameterizedClassRuleIntegrationTest.java

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+package com.baeldung.controller.parameterized;
+
+import com.baeldung.config.WebConfig;
+import org.junit.Before;
+import org.junit.ClassRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestContextManager;
+import org.springframework.test.context.junit4.rules.SpringClassRule;
+import org.springframework.test.context.junit4.rules.SpringMethodRule;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+
+@RunWith(Parameterized.class)
+@WebAppConfiguration
+@ContextConfiguration(classes = WebConfig.class)
+public class RoleControllerParameterizedClassRuleIntegrationTest {
+
+    private static final String CONTENT_TYPE = "application/text;charset=ISO-8859-1";
+
+    @ClassRule
+    public static final SpringClassRule scr = new SpringClassRule();
+
+    @Rule
+    public final SpringMethodRule smr = new SpringMethodRule();
+
+    @Autowired
+    private WebApplicationContext wac;
+
+    private MockMvc mockMvc;
+
+    @Parameter(value = 0)
+    public String name;
+
+    @Parameter(value = 1)
+    public String role;
+
+    @Parameters
+    public static Collection<Object[]> data() {
+        Collection<Object[]> params = new ArrayList();
+        params.add(new Object[]{"John", "ADMIN"});
+        params.add(new Object[]{"Doe", "EMPLOYEE"});
+
+        return params;
+    }
+
+    @Before
+    public void setup() throws Exception {
+        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
+    }
+
+    @Test
+    public void givenEmployeeNameWhenInvokeRoleThenReturnRole() throws Exception {
+        this.mockMvc.perform(MockMvcRequestBuilders.get("/role/" + name)).andDo(print()).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(CONTENT_TYPE))
+                .andExpect(MockMvcResultMatchers.content().string(role));
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/controller/parameterized/RoleControllerParameterizedIntegrationTest.java

@@ -0,0 +1,69 @@
+package com.baeldung.controller.parameterized;
+
+import com.baeldung.config.WebConfig;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestContextManager;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+
+@RunWith(Parameterized.class)
+@WebAppConfiguration
+@ContextConfiguration(classes = WebConfig.class)
+public class RoleControllerParameterizedIntegrationTest {
+
+    private static final String CONTENT_TYPE = "application/text;charset=ISO-8859-1";
+
+    @Autowired
+    private WebApplicationContext wac;
+
+    private MockMvc mockMvc;
+
+    private TestContextManager testContextManager;
+
+    @Parameter(value = 0)
+    public String name;
+
+    @Parameter(value = 1)
+    public String role;
+
+    @Parameters
+    public static Collection<Object[]> data() {
+        Collection<Object[]> params = new ArrayList();
+        params.add(new Object[]{"John", "ADMIN"});
+        params.add(new Object[]{"Doe", "EMPLOYEE"});
+
+        return params;
+    }
+
+    @Before
+    public void setup() throws Exception {
+        this.testContextManager = new TestContextManager(getClass());
+        this.testContextManager.prepareTestInstance(this);
+
+        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
+    }
+
+    @Test
+    public void givenEmployeeNameWhenInvokeRoleThenReturnRole() throws Exception {
+        this.mockMvc.perform(MockMvcRequestBuilders.get("/role/" + name)).andDo(print()).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(CONTENT_TYPE))
+                .andExpect(MockMvcResultMatchers.content().string(role));
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/overrideproperties/ContextPropertySourceResolverIntegrationTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.overrideproperties;
+
+import com.baeldung.overrideproperties.resolver.PropertySourceResolver;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(initializers = PropertyOverrideContextInitializer.class, classes = Application.class)
+public class ContextPropertySourceResolverIntegrationTest {
+
+    @Autowired private PropertySourceResolver propertySourceResolver;
+
+    @Test
+    public void shouldContext_overridePropertyValues() {
+        final String firstProperty = propertySourceResolver.getFirstProperty();
+        final String secondProperty = propertySourceResolver.getSecondProperty();
+
+        assertEquals(PropertyOverrideContextInitializer.PROPERTY_FIRST_VALUE, firstProperty);
+        assertEquals("contextFile", secondProperty);
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/overrideproperties/ProfilePropertySourceResolverIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.overrideproperties;
+
+import com.baeldung.overrideproperties.resolver.PropertySourceResolver;
+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;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@ActiveProfiles("test")
+public class ProfilePropertySourceResolverIntegrationTest {
+
+    @Autowired private PropertySourceResolver propertySourceResolver;
+
+    @Test
+    public void shouldProfiledProperty_overridePropertyValues() {
+        final String firstProperty = propertySourceResolver.getFirstProperty();
+        final String secondProperty = propertySourceResolver.getSecondProperty();
+
+        assertEquals("profile", firstProperty);
+        assertEquals("file", secondProperty);
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/overrideproperties/PropertyOverrideContextInitializer.java

@@ -0,0 +1,17 @@
+package com.baeldung.overrideproperties;
+
+import org.springframework.context.ApplicationContextInitializer;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.test.context.support.TestPropertySourceUtils;
+
+public class PropertyOverrideContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
+
+    static final String PROPERTY_FIRST_VALUE = "contextClass";
+
+    @Override
+    public void initialize(ConfigurableApplicationContext configurableApplicationContext) {
+        TestPropertySourceUtils.addInlinedPropertiesToEnvironment(configurableApplicationContext, "example.firstProperty=" + PROPERTY_FIRST_VALUE);
+
+        TestPropertySourceUtils.addPropertiesFilesToEnvironment(configurableApplicationContext, "context-override-application.properties");
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/overrideproperties/SpringBootPropertySourceResolverIntegrationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.overrideproperties;
+
+import com.baeldung.overrideproperties.resolver.PropertySourceResolver;
+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;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(properties = { "example.firstProperty=annotation" })
+public class SpringBootPropertySourceResolverIntegrationTest {
+
+    @Autowired private PropertySourceResolver propertySourceResolver;
+
+    @Test
+    public void shouldSpringBootTestAnnotation_overridePropertyValues() {
+        final String firstProperty = propertySourceResolver.getFirstProperty();
+        final String secondProperty = propertySourceResolver.getSecondProperty();
+
+        Assert.assertEquals("annotation", firstProperty);
+        Assert.assertEquals("file", secondProperty);
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/overrideproperties/TestResourcePropertySourceResolverIntegrationTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.overrideproperties;
+
+import com.baeldung.overrideproperties.resolver.PropertySourceResolver;
+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 static org.junit.Assert.assertEquals;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class TestResourcePropertySourceResolverIntegrationTest {
+
+    @Autowired private PropertySourceResolver propertySourceResolver;
+
+    @Test
+    public void shouldTestResourceFile_overridePropertyValues() {
+        final String firstProperty = propertySourceResolver.getFirstProperty();
+        final String secondProperty = propertySourceResolver.getSecondProperty();
+
+        assertEquals("file", firstProperty);
+        assertEquals("file", secondProperty);
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/scheduled/ScheduledAwaitilityIntegrationTest.java

@@ -0,0 +1,24 @@
+package com.baeldung.scheduled;
+
+import com.baeldung.config.ScheduledConfig;
+import org.awaitility.Duration;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.awaitility.Awaitility.await;
+import static org.mockito.Mockito.atLeast;
+import static org.mockito.Mockito.verify;
+
+@SpringJUnitConfig(ScheduledConfig.class)
+public class ScheduledAwaitilityIntegrationTest {
+
+    @SpyBean private Counter counter;
+
+    @Test
+    public void whenWaitOneSecond_thenScheduledIsCalledAtLeastTenTimes() {
+        await()
+          .atMost(Duration.ONE_SECOND)
+          .untilAsserted(() -> verify(counter, atLeast(10)).scheduled());
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/scheduled/ScheduledIntegrationTest.java

@@ -0,0 +1,22 @@
+package com.baeldung.scheduled;
+
+import com.baeldung.config.ScheduledConfig;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringJUnitConfig(ScheduledConfig.class)
+public class ScheduledIntegrationTest {
+
+    @Autowired Counter counter;
+
+    @Test
+    public void givenSleepBy100ms_whenGetInvocationCount_thenIsGreaterThanZero() throws InterruptedException {
+        Thread.sleep(100L);
+
+        assertThat(counter.getInvocationCount()).isGreaterThan(0);
+    }
+
+}

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/DefaultTestPropertySourceIntegrationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.testpropertysource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = ClassUsingProperty.class)
+@TestPropertySource
+public class DefaultTestPropertySourceIntegrationTest {
+
+    @Autowired
+    ClassUsingProperty classUsingProperty;
+
+    @Test
+    public void givenDefaultTestPropertySource_whenVariableOneRetrieved_thenValueInDefaultFileReturned() {
+        String output = classUsingProperty.retrievePropertyOne();
+
+        assertThat(output).isEqualTo("default-value");
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/LocationTestPropertySourceIntegrationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.testpropertysource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = ClassUsingProperty.class)
+@TestPropertySource(locations = "/other-location.properties")
+public class LocationTestPropertySourceIntegrationTest {
+
+    @Autowired
+    ClassUsingProperty classUsingProperty;
+
+    @Test
+    public void givenDefaultTestPropertySource_whenVariableOneRetrieved_thenValueInDefaultFileReturned() {
+        String output = classUsingProperty.retrievePropertyOne();
+
+        assertThat(output).isEqualTo("other-location-value");
+    }
+}

testing-modules/spring-testing/src/test/java/com/baeldung/testpropertysource/PropertiesTestPropertySourceIntegrationTest.java

@@ -0,0 +1,26 @@
+package com.baeldung.testpropertysource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = ClassUsingProperty.class)
+@TestPropertySource(locations = "/other-location.properties", properties = "baeldung.testpropertysource.one=other-properties-value")
+public class PropertiesTestPropertySourceIntegrationTest {
+
+    @Autowired
+    ClassUsingProperty classUsingProperty;
+
+    @Test
+    public void givenDefaultTestPropertySource_whenVariableOneRetrieved_thenValueInDefaultFileReturned() {
+        String output = classUsingProperty.retrievePropertyOne();
+
+        assertThat(output).isEqualTo("other-properties-value");
+    }
+}

testing-modules/spring-testing/src/test/java/org/baeldung/mockito/MockAnnotationUnitTest.java

@@ -0,0 +1,37 @@
+package org.baeldung.mockito;
+
+import org.baeldung.mockito.repository.UserRepository;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.junit.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockAnnotationUnitTest {
+    
+    @Mock
+    UserRepository mockRepository;
+
+    @Test
+    public void givenCountMethodMocked_WhenCountInvoked_ThenMockValueReturned() {
+        Mockito.when(mockRepository.count()).thenReturn(123L);
+
+        long userCount = mockRepository.count();
+
+        Assert.assertEquals(123L, userCount);
+        Mockito.verify(mockRepository).count();
+    }
+    
+    @Test
+    public void givenCountMethodOfLocalMockVariableMocked_WhenCountInvoked_ThenMockedValueReturned() {
+        UserRepository localMockRepository = Mockito.mock(UserRepository.class);
+        Mockito.when(localMockRepository.count()).thenReturn(111L);
+
+        long userCount = localMockRepository.count();
+
+        Assert.assertEquals(111L, userCount);
+        Mockito.verify(localMockRepository).count();
+    }
+}

testing-modules/spring-testing/src/test/java/org/baeldung/mockito/MockBeanAnnotationIntegrationTest.java

@@ -0,0 +1,32 @@
+package org.baeldung.mockito;
+
+import org.baeldung.mockito.repository.UserRepository;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.context.ApplicationContext;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+public class MockBeanAnnotationIntegrationTest {
+    
+    @MockBean
+    UserRepository mockRepository;
+    
+    @Autowired
+    ApplicationContext context;
+    
+    @Test
+    public void givenCountMethodMocked_WhenCountInvoked_ThenMockValueReturned() {
+        Mockito.when(mockRepository.count()).thenReturn(123L);
+
+        UserRepository userRepoFromContext = context.getBean(UserRepository.class);
+        long userCount = userRepoFromContext.count();
+
+        Assert.assertEquals(123L, userCount);
+        Mockito.verify(mockRepository).count();
+    }
+}

testing-modules/spring-testing/src/test/java/org/baeldung/reflectiontestutils/ReflectionTestUtilsUnitTest.java

@@ -0,0 +1,46 @@
+package org.baeldung.reflectiontestutils;
+
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.mock;
+
+import org.baeldung.reflectiontestutils.repository.Employee;
+import org.baeldung.reflectiontestutils.repository.EmployeeService;
+import org.baeldung.reflectiontestutils.repository.HRService;
+import org.junit.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import static org.mockito.Mockito.when;
+
+public class ReflectionTestUtilsUnitTest {
+
+    @Test
+    public void whenNonPublicField_thenReflectionTestUtilsSetField() {
+        Employee employee = new Employee();
+        ReflectionTestUtils.setField(employee, "id", 1);
+        assertTrue(employee.getId().equals(1));
+
+    }
+
+    @Test
+    public void whenNonPublicMethod_thenReflectionTestUtilsInvokeMethod() {
+        Employee employee = new Employee();
+        ReflectionTestUtils.setField(employee, "id", 1);
+        employee.setName("Smith, John");
+        assertTrue(ReflectionTestUtils.invokeMethod(employee, "employeeToString").equals("id: 1; name: Smith, John"));
+    }
+
+    @Test
+    public void whenInjectingMockOfDependency_thenReflectionTestUtilsSetField() {
+        Employee employee = new Employee();
+        ReflectionTestUtils.setField(employee, "id", 1);
+        employee.setName("Smith, John");
+
+        HRService hrService = mock(HRService.class);
+        when(hrService.getEmployeeStatus(employee.getId())).thenReturn("Active");
+        EmployeeService employeeService = new EmployeeService();
+
+        // Inject mock into the private field
+        ReflectionTestUtils.setField(employeeService, "hrService", hrService);
+        assertEquals("Employee " + employee.getId() + " status: Active", employeeService.findEmployeeStatus(employee.getId()));
+    }
+}

testing-modules/spring-testing/src/test/resources/application-test.properties

@@ -0,0 +1,2 @@
+# override properties
+example.firstProperty=profile

testing-modules/spring-testing/src/test/resources/application.properties

@@ -0,0 +1,3 @@
+# override properties
+example.firstProperty=file
+example.secondProperty=file

testing-modules/spring-testing/src/test/resources/com/baeldung/testpropertysource/DefaultTestPropertySourceIntegrationTest.properties

@@ -0,0 +1 @@
+baeldung.testpropertysource.one=default-value

testing-modules/spring-testing/src/test/resources/context-override-application.properties

@@ -0,0 +1 @@
+example.secondProperty=contextFile

testing-modules/spring-testing/src/test/resources/other-location.properties

@@ -0,0 +1 @@
+baeldung.testpropertysource.one=other-location-value