eugenp · saajn · Sep 23, 2025 · Sep 17, 2025 · Sep 23, 2025
diff --git a/testing-modules/mockito-4/pom.xml b/testing-modules/mockito-4/pom.xml
@@ -17,5 +17,17 @@
         <maven.compiler.target>23</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
 </project>
diff --git a/testing-modules/mockito-4/src/main/java/com/baeldung/mockinglogger/UserService.java b/testing-modules/mockito-4/src/main/java/com/baeldung/mockinglogger/UserService.java
@@ -0,0 +1,26 @@
+package com.baeldung.mockinglogger;
+
+import org.slf4j.Logger;
+
+public class UserService {
+
+    private final Logger logger;
+
+    public UserService(Logger logger) {
+        this.logger = logger;
+    }
+
+    public void checkAdminStatus(boolean isAdmin) {
+        if (isAdmin) {
+            logger.info("You are an admin, access granted");
+        } else {
+            logger.error("You are not an admin");
+        }
+    }
+
+    public void processUser(String username) {
+        logger.info("Processing user: {}", username);
+        logger.warn("Please don't close your browser ...");
+        logger.info("Processing complete");
+    }
+}
diff --git a/testing-modules/mockito-4/src/test/java/com/baeldung/mockinglogger/UserServiceUnitTest.java b/testing-modules/mockito-4/src/test/java/com/baeldung/mockinglogger/UserServiceUnitTest.java
@@ -0,0 +1,68 @@
+package com.baeldung.mockinglogger;
+
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.mockStatic;
+import static org.mockito.Mockito.verify;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InOrder;
+import org.mockito.MockedStatic;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+class UserServiceUnitTest {
+
+    private Logger mockLogger;
+    private UserService userService;
+
+    @BeforeEach
+    public void setup() {
+        mockLogger = mock(Logger.class);
+        userService = new UserService(mockLogger);
+    }
+
+    @Test
+    void givenUserServiceLogic_whenVerifyingIfUserIsNotAnAdmin_thenReturnCorrectLog() {
+
+        try (MockedStatic<LoggerFactory> mockedFactory = mockStatic(LoggerFactory.class)) {
+            mockedFactory.when(() -> LoggerFactory.getLogger(UserService.class))
+                .thenReturn(mockLogger);
+            userService.checkAdminStatus(false);
+
+            verify(mockLogger).error("You are not an admin");
+
+        }
+    }
+
+    @Test
+    void givenUserServiceLogic_whenVerifyingIfUserIsAnAdmin_thenReturnCorrectLog() {
+
+        try (MockedStatic<LoggerFactory> mockedFactory = mockStatic(LoggerFactory.class)) {
+            mockedFactory.when(() -> LoggerFactory.getLogger(UserService.class))
+                .thenReturn(mockLogger);
+            userService.checkAdminStatus(true);
+
+            verify(mockLogger).info("You are an admin, access granted");
+        }
+    }
+
+    @Test
+    void givenUserServiceLogic_whenProcessingAUser_thenLogMultipleMessage() {
+        try (MockedStatic<LoggerFactory> mockedFactory = mockStatic(LoggerFactory.class)) {
+            mockedFactory.when(() -> LoggerFactory.getLogger(UserService.class))
+                .thenReturn(mockLogger);
+            userService.processUser("Harry");
+
+            InOrder inOrder = inOrder(mockLogger);
+
+            inOrder.verify(mockLogger)
+                .info("Processing user: {}", "Harry");
+            inOrder.verify(mockLogger)
+                .info("Processing complete");
+        }
+
+    }
+
+}