diff --git a/src/it/spring-fat/invoker.properties b/src/it/spring-fat/invoker.properties
index 602e98dac..a053e09ce 100644
--- a/src/it/spring-fat/invoker.properties
+++ b/src/it/spring-fat/invoker.properties
@@ -1 +1 @@
-invoker.goals=clean process-classes -e
+invoker.goals=clean test -e
diff --git a/src/it/spring-fat/pom.xml b/src/it/spring-fat/pom.xml
index 8d5218937..564597c69 100644
--- a/src/it/spring-fat/pom.xml
+++ b/src/it/spring-fat/pom.xml
@@ -58,7 +58,12 @@ SOFTWARE.
   <dependencies>
     <dependency>
       <groupId>org.springframework.boot</groupId>
-      <artifactId>spring-boot-starter</artifactId>
+      <artifactId>spring-boot-starter-web</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
     </dependency>
   </dependencies>
   <build>
@@ -74,6 +79,9 @@ SOFTWARE.
               <goal>unpack-dependencies</goal>
             </goals>
             <configuration>
+              <excludes>
+                **/module-info.class
+              </excludes>
               <outputDirectory>${project.build.outputDirectory}</outputDirectory>
             </configuration>
           </execution>
@@ -134,29 +142,6 @@ SOFTWARE.
       <!--                </execution>-->
       <!--              </executions>-->
       <!--            </plugin>-->
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>exec-maven-plugin</artifactId>
-        <version>3.5.0</version>
-        <executions>
-          <execution>
-            <phase>
-              process-classes
-            </phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-          </execution>
-        </executions>
-        <configuration>
-          <executable>java</executable>
-          <arguments>
-            <argument>-classpath</argument>
-            <argument>${project.build.outputDirectory}</argument>
-            <argument>org.eolang.jeo.spring.Application</argument>
-          </arguments>
-        </configuration>
-      </plugin>
     </plugins>
   </build>
 </project>
diff --git a/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Application.java b/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Application.java
index 362eb3014..9640156ad 100644
--- a/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Application.java
+++ b/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Application.java
@@ -23,8 +23,6 @@
  */
 package org.eolang.jeo.spring;
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@@ -33,17 +31,9 @@
  * @since 0.2
  */
 @SpringBootApplication
-public class Application implements CommandLineRunner {
-
-    @Autowired
-    private Receptionist receptionist;
+public class Application {
 
     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }
-
-    @Override
-    public void run(final String... args) {
-        this.receptionist.sayHello("Fat Spring");
-    }
 }
diff --git a/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Receptionist.java b/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Receptionist.java
index 7d3a774d8..bafbb5eb4 100644
--- a/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Receptionist.java
+++ b/src/it/spring-fat/src/main/java/org/eolang/jeo/spring/Receptionist.java
@@ -23,15 +23,21 @@
  */
 package org.eolang.jeo.spring;
 
-import org.springframework.stereotype.Component;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
  * Greeter bean.
  * @since 0.2
  */
-@Component
+@RestController
 public class Receptionist {
-    public void sayHello(final String who) {
-        System.out.printf("Glad to see you, %s...%n", who);
+
+    @GetMapping("/hello")
+    public String greetings(
+        @RequestParam(defaultValue = "Fat Spring") final String who
+    ) {
+        return String.format("Glad to see you, %s...", who);
     }
 }
diff --git a/src/it/spring-fat/src/main/resources/META-INF/spring.factories b/src/it/spring-fat/src/main/resources/META-INF/spring.factories
new file mode 100644
index 000000000..a513d0e4f
--- /dev/null
+++ b/src/it/spring-fat/src/main/resources/META-INF/spring.factories
@@ -0,0 +1,103 @@
+# Logging Systems
+org.springframework.boot.logging.LoggingSystemFactory=\
+org.springframework.boot.logging.logback.LogbackLoggingSystem.Factory,\
+org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.Factory,\
+org.springframework.boot.logging.java.JavaLoggingSystem.Factory
+
+# PropertySource Loaders
+org.springframework.boot.env.PropertySourceLoader=\
+org.springframework.boot.env.PropertiesPropertySourceLoader,\
+org.springframework.boot.env.YamlPropertySourceLoader
+
+# ConfigData Location Resolvers
+org.springframework.boot.context.config.ConfigDataLocationResolver=\
+org.springframework.boot.context.config.ConfigTreeConfigDataLocationResolver,\
+org.springframework.boot.context.config.StandardConfigDataLocationResolver
+
+# ConfigData Loaders
+org.springframework.boot.context.config.ConfigDataLoader=\
+org.springframework.boot.context.config.ConfigTreeConfigDataLoader,\
+org.springframework.boot.context.config.StandardConfigDataLoader
+
+# Application Context Factories
+org.springframework.boot.ApplicationContextFactory=\
+org.springframework.boot.web.reactive.context.AnnotationConfigReactiveWebServerApplicationContext.Factory,\
+org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext.Factory
+
+# Run Listeners
+org.springframework.boot.SpringApplicationRunListener=\
+org.springframework.boot.context.event.EventPublishingRunListener
+
+# Error Reporters
+org.springframework.boot.SpringBootExceptionReporter=\
+org.springframework.boot.diagnostics.FailureAnalyzers
+
+# Application Context Initializers
+org.springframework.context.ApplicationContextInitializer=\
+org.springframework.boot.context.ConfigurationWarningsApplicationContextInitializer,\
+org.springframework.boot.context.ContextIdApplicationContextInitializer,\
+org.springframework.boot.context.config.DelegatingApplicationContextInitializer,\
+org.springframework.boot.rsocket.context.RSocketPortInfoApplicationContextInitializer,\
+org.springframework.boot.web.context.ServerPortInfoApplicationContextInitializer
+
+# Application Listeners
+org.springframework.context.ApplicationListener=\
+org.springframework.boot.ClearCachesApplicationListener,\
+org.springframework.boot.builder.ParentContextCloserApplicationListener,\
+org.springframework.boot.context.FileEncodingApplicationListener,\
+org.springframework.boot.context.config.AnsiOutputApplicationListener,\
+org.springframework.boot.context.config.DelegatingApplicationListener,\
+org.springframework.boot.context.logging.LoggingApplicationListener,\
+org.springframework.boot.env.EnvironmentPostProcessorApplicationListener
+
+# Environment Post Processors
+org.springframework.boot.env.EnvironmentPostProcessor=\
+org.springframework.boot.cloud.CloudFoundryVcapEnvironmentPostProcessor,\
+org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor,\
+org.springframework.boot.env.RandomValuePropertySourceEnvironmentPostProcessor,\
+org.springframework.boot.env.SpringApplicationJsonEnvironmentPostProcessor,\
+org.springframework.boot.env.SystemEnvironmentPropertySourceEnvironmentPostProcessor,\
+org.springframework.boot.reactor.DebugAgentEnvironmentPostProcessor
+
+# Failure Analyzers
+org.springframework.boot.diagnostics.FailureAnalyzer=\
+org.springframework.boot.context.config.ConfigDataNotFoundFailureAnalyzer,\
+org.springframework.boot.context.properties.IncompatibleConfigurationFailureAnalyzer,\
+org.springframework.boot.context.properties.NotConstructorBoundInjectionFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.BeanCurrentlyInCreationFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.BeanDefinitionOverrideFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.BeanNotOfRequiredTypeFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.BindFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.BindValidationFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.UnboundConfigurationPropertyFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.MutuallyExclusiveConfigurationPropertiesFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.NoSuchMethodFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.NoUniqueBeanDefinitionFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.PortInUseFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.ValidationExceptionFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.InvalidConfigurationPropertyNameFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.InvalidConfigurationPropertyValueFailureAnalyzer,\
+org.springframework.boot.diagnostics.analyzer.PatternParseFailureAnalyzer,\
+org.springframework.boot.liquibase.LiquibaseChangelogMissingFailureAnalyzer,\
+org.springframework.boot.web.context.MissingWebServerFactoryBeanFailureAnalyzer,\
+org.springframework.boot.web.embedded.tomcat.ConnectorStartFailureAnalyzer
+
+# Failure Analysis Reporters
+org.springframework.boot.diagnostics.FailureAnalysisReporter=\
+org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter
+
+# Database Initializer Detectors
+org.springframework.boot.sql.init.dependency.DatabaseInitializerDetector=\
+org.springframework.boot.flyway.FlywayDatabaseInitializerDetector,\
+org.springframework.boot.jdbc.AbstractDataSourceInitializerDatabaseInitializerDetector,\
+org.springframework.boot.jdbc.init.DataSourceScriptDatabaseInitializerDetector,\
+org.springframework.boot.liquibase.LiquibaseDatabaseInitializerDetector,\
+org.springframework.boot.orm.jpa.JpaDatabaseInitializerDetector,\
+org.springframework.boot.r2dbc.init.R2dbcScriptDatabaseInitializerDetector
+
+# Depends On Database Initialization Detectors
+org.springframework.boot.sql.init.dependency.DependsOnDatabaseInitializationDetector=\
+org.springframework.boot.sql.init.dependency.AnnotationDependsOnDatabaseInitializationDetector,\
+org.springframework.boot.jdbc.SpringJdbcDependsOnDatabaseInitializationDetector,\
+org.springframework.boot.jooq.JooqDependsOnDatabaseInitializationDetector,\
+org.springframework.boot.orm.jpa.JpaDependsOnDatabaseInitializationDetector
diff --git a/src/it/spring-fat/src/test/java/org/eolang/jeo/spring/ApplicationTest.java b/src/it/spring-fat/src/test/java/org/eolang/jeo/spring/ApplicationTest.java
new file mode 100644
index 000000000..c07e27548
--- /dev/null
+++ b/src/it/spring-fat/src/test/java/org/eolang/jeo/spring/ApplicationTest.java
@@ -0,0 +1,74 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2024 Objectionary.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.eolang.jeo.spring;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.boot.test.web.server.LocalServerPort;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+/**
+ * Integration test for Application.
+ * @since 0.2
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+class ApplicationTest {
+
+    @Autowired
+    private TestRestTemplate template;
+
+    @LocalServerPort
+    private int port;
+
+    @Test
+    void startupsServerAndMakesGetRequest() {
+        final ResponseEntity<String> resp = this.template.getForEntity(
+            String.format("http://localhost:%d/hello", this.port),
+            String.class
+        );
+        Assertions.assertEquals(
+            HttpStatus.OK,
+            resp.getStatusCode(),
+            "Status code is not OK"
+        );
+        Assertions.assertNotNull(
+            resp.getBody(),
+            "Response body is empty"
+        );
+        final String expected = "Glad to see you, Fat Spring...";
+        Assertions.assertTrue(
+            resp.getBody().contains(expected),
+            String.format(
+                "Hello response is not correct. The body: %s%n should contain '%s'",
+                resp.getBody(),
+                expected
+            )
+        );
+    }
+
+}
diff --git a/src/it/spring-fat/verify.groovy b/src/it/spring-fat/verify.groovy
index b4ffe5663..9a5af53f5 100644
--- a/src/it/spring-fat/verify.groovy
+++ b/src/it/spring-fat/verify.groovy
@@ -24,7 +24,7 @@
 //Check logs first.
 String log = new File(basedir, 'build.log').text;
 assert log.contains("BUILD SUCCESS"): "BUILD FAILED"
-assert log.contains("Glad to see you, Fat Spring..."): "'Glad to see you, Fat Spring...' entry is not found"
+assert log.contains("Tests run:"): "Tests are not running"
 //Check that we have generated EO object files.
 //assert new File(basedir, 'target/generated-sources/jeo-xmir/org/eolang/jeo/spring/Application.xmir').exists()
 //assert new File(basedir, 'target/generated-sources/jeo-xmir/org/eolang/jeo/spring/Receptionist.xmir').exists()