Demonstrate issue 22853

issue22853/pom.xml

@@ -0,0 +1,53 @@
+<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>bugs</groupId>
+	<artifactId>issue22853</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.1.4.RELEASE</version>
+	</parent>
+
+	<properties>
+		<java-version>11</java-version>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>${java-version}</source>
+					<target>${java-version}</target>
+					<compilerArgument>-Xlint:all</compilerArgument>
+					<showWarnings>true</showWarnings>
+					<showDeprecation>true</showDeprecation>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>

issue22853/src/test/java/issue22853/SpringIT.java

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+package issue22853;
+
+import static java.net.http.HttpClient.Version.HTTP_1_1;
+import static org.junit.Assert.assertEquals;
+import static org.springframework.http.MediaType.TEXT_HTML;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse.BodyHandlers;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.stereotype.Controller;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import issue22853.SpringIT.AnyController;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, classes = AnyController.class)
+@AutoConfigureMockMvc
+public class SpringIT {
+
+	@Controller
+	@SpringBootApplication
+	static class AnyController {
+
+		@RequestMapping("/failing")
+		public void fail() throws Exception {
+			throw new Exception();
+		}
+
+		@Configuration
+		static class DefaultContentTypeConfiguration implements WebMvcConfigurer {
+
+			@Override
+			public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
+				configurer.defaultContentType(TEXT_HTML);
+			}
+		}
+	}
+
+	@Test
+	public void NonExistingUrlShouldReturn404() {
+		var status = get("/nonExisting");
+		assertEquals(404, status);
+	}
+
+	@Test
+	public void errorShouldReturn500() {
+		var status = get("/failing");
+		assertEquals(500, status);
+	}
+
+	@LocalServerPort
+	private int port;
+
+	private int get(String path) {
+		try {
+			var httpClient = HttpClient.newBuilder().version(HTTP_1_1).build();
+			var request = HttpRequest.newBuilder().uri(new URI("http://localhost:" + port + path)).GET().build();
+			var response = httpClient.send(request, BodyHandlers.discarding());
+			return response.statusCode();
+
+		} catch (Exception e) {
+			throw new IllegalStateException(e);
+		}
+	}
+}