Repository containing the content for the Piranha.cloud website
This project is maintained by piranhacloud
If you are in container land this guide will show you how to use our container image for testing.
In 5 steps you will learn how to it. They are:
Create an empty directory to store your Maven project. Inside of that directory create the pom.xml file with the content as below.
<?xml version="1.0" encoding="UTF-8"?>
<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>cloud.piranha.guides.webprofile</groupId>
<artifactId>docker</artifactId>
<version>1-SNAPSHOT</version>
<packaging>war</packaging>
<name>Testing with our container image</name>
<properties>
<!-- dependencies -->
<jakartaee.version>10.0.0</jakartaee.version>
<junit.version>5.10.0-M1</junit.version>
<!-- plugins -->
<docker-maven-plugin.version>0.43.4</docker-maven-plugin.version>
<maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
<maven-failsafe-plugin.version>3.0.0</maven-failsafe-plugin.version>
<maven-war-plugin.version>3.3.2</maven-war-plugin.version>
<!-- other -->
<java.version>21</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>jakarta.platform</groupId>
<artifactId>jakarta.jakartaee-web-api</artifactId>
<version>${jakartaee.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-params</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>image</finalName>
<plugins>
<plugin>
<groupId>io.fabric8</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>${docker-maven-plugin.version}</version>
<configuration>
<images>
<image>
<alias>image</alias>
<build>
<buildx>
<platforms>
<platform>linux/amd64</platform>
<platform>linux/arm64</platform>
</platforms>
</buildx>
<contextDir>${basedir}</contextDir>
<dockerFile>src/main/docker/Dockerfile</dockerFile>
</build>
<run>
<ports>
<port>8080:8080</port>
</ports>
<wait>
<http>
<url>http://localhost:8080/helloworld.html</url>
</http>
<time>20000</time>
</wait>
</run>
</image>
</images>
</configuration>
<executions>
<execution>
<id>start</id>
<phase>pre-integration-test</phase>
<goals>
<goal>build</goal>
<goal>start</goal>
</goals>
</execution>
<execution>
<id>stop</id>
<phase>post-integration-test</phase>
<goals>
<goal>stop</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<release>${java.version}</release>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>${maven-war-plugin.version}</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>
Add the helloworld.html file in the src/main/webapp directory.
<!DOCTYPE html>
<html>
<head>
<title>Hello World</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div>Hello World!</div>
</body>
</html>
As we want to make sure the application gets tested before we release an integration test is added which will be executed as part of the build.
We’ll add the integration test to the src/test/java directory.
package helloworld;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;
class HelloWorldIT {
@Test
void testHelloWorldHtml() throws Exception {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest
.newBuilder(new URI("http://localhost:8080/helloworld.html"))
.build();
HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
assertTrue(response.body().contains("Hello World!"));
}
}
Create the Dockerfile in the src/main/docker directory with the following
content:
FROM ghcr.io/piranhacloud/webprofile:23.12.0
USER piranha
COPY target/image.war /home/piranha/ROOT.war
CMD ["java", "-jar", "piranha-dist-webprofile.jar", "--war-file", "ROOT.war"]
The application is setup to use the Docker Maven plugin to do integration testing so when you are building the application it will also execute an integration test validating the web application works.
To build and test the application execute the following command:
mvn install
As you can see getting testing with our container image is easy!