Add servlet-tomcat smoke test

See gh-70

ci/smoke-tests.yml

@@ -46,6 +46,7 @@ smoke_tests:
   - security-thymeleaf
   - security-webflux
   - security-webmvc
+  - servlet-tomcat
   - session-jdbc
   - session-redis-webflux
   - spring-amqp-rabbit

servlet-tomcat/README.adoc

@@ -0,0 +1 @@
+Tests if Servlets with Tomcat works

servlet-tomcat/build.gradle

@@ -0,0 +1,20 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot'
+	id 'org.springframework.aot.smoke-test'
+	id 'org.graalvm.buildtools.native'
+}
+
+dependencies {
+	implementation(platform(org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES))
+	implementation("org.springframework.boot:spring-boot-starter-web")
+
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+	aotTestImplementation(project(":aot-smoke-test-support"))
+	aotTestImplementation("org.awaitility:awaitility:4.2.0")
+}
+
+aotSmokeTest {
+	webApplication = true
+}

servlet-tomcat/src/aotTest/java/com/example/servlet/tomcat/ServletTomcatApplicationAotTests.java

@@ -0,0 +1,19 @@
+package com.example.servlet.tomcat;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.smoketest.support.junit.AotSmokeTest;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@AotSmokeTest
+class ServletTomcatApplicationAotTests {
+
+	@Test
+	void servletIsInvokable(WebTestClient client) {
+		client.get().uri("/?name=Servlet").exchange().expectStatus().isOk().expectBody().consumeWith(
+				(result) -> assertThat(new String(result.getResponseBodyContent())).isEqualTo("Hello Servlet"));
+	}
+
+}

servlet-tomcat/src/main/java/com/example/servlet/tomcat/ServletConfiguration.java

@@ -0,0 +1,15 @@
+package com.example.servlet.tomcat;
+
+import org.springframework.boot.web.servlet.ServletRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration(proxyBeanMethods = false)
+class ServletConfiguration {
+
+	@Bean
+	ServletRegistrationBean<TestServlet> testServletServletRegistrationBean() {
+		return new ServletRegistrationBean<>(new TestServlet(), "/*");
+	}
+
+}

servlet-tomcat/src/main/java/com/example/servlet/tomcat/ServletTomcatApplication.java

@@ -0,0 +1,14 @@
+package com.example.servlet.tomcat;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ServletTomcatApplication {
+
+	public static void main(String[] args) throws InterruptedException {
+		SpringApplication.run(ServletTomcatApplication.class, args);
+		Thread.currentThread().join(); // To be able to measure memory consumption
+	}
+
+}

servlet-tomcat/src/main/java/com/example/servlet/tomcat/TestServlet.java

@@ -0,0 +1,24 @@
+package com.example.servlet.tomcat;
+
+import java.io.IOException;
+
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+class TestServlet extends HttpServlet {
+
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+		String[] names = req.getParameterValues("name");
+		String name;
+		if (names == null || names.length == 0) {
+			name = "world";
+		}
+		else {
+			name = names[0];
+		}
+		resp.getWriter().printf("Hello %s", name);
+	}
+
+}

servlet-tomcat/src/test/java/com/example/servlet/tomcat/ServletTomcatApplicationTests.java

@@ -0,0 +1,14 @@
+package com.example.servlet.tomcat;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ServletTomcatApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}

settings.gradle

@@ -74,6 +74,7 @@ include "security-method"
 include "security-thymeleaf"
 include "security-webflux"
 include "security-webmvc"
+include "servlet-tomcat"
 include "session-jdbc"
 include "session-redis-webflux"
 include "spring-amqp-rabbit"