How to Skip Integration Tests in Maven but Run Unit Tests

How to Skip Integration Tests in Maven but Execute Unit Tests

It was not so easy when I was trying all the possible options and lost 3 hours of my valuable time. It is really very frustrating when you are trying to do something and it is not happening within your expected time.

This happened to me when I was trying to build the project without executing the integration tests. My scenario was to skip only the integration tests, but the unit test cases must still be executed.

I Googled almost many links, but had no luck. Finally, the solution worked for me with the below pom.xml configuration.

Add the below tag into your pom.xml:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.18.1</version>
            <configuration>
                <excludes>
                    <exclude>**/*IntegrationTest.java</exclude>
                </excludes>
            </configuration>
        </plugin>
    </plugins>
</build>

Here you can use the <exclude> tag and mention any test class pattern that you want to skip.

For example, if your Java class name contains ITest.java (i.e. MyMethodITest.java):

<exclude>**/*IT*.java</exclude>

Or:

<exclude>**/*AnyTestClasses.java</exclude>

Not only integration tests, you can skip any test classes using the <exclude> tag, but you need to configure the pom.xml properly.

In the Maven command, you can use the normal command as below:

mvn clean install

Note: Be careful about the plugin version because the configuration may behave differently with different versions. Make sure the version you are using supports the configuration you need.

Spring Boot JAR Error: No Main Manifest Attribute

The error "no main manifest attribute, in sample-hello-microservice-springboot.jar" occurred while trying to execute the JAR file.

This was an unusual issue with JAR file execution. In this case, I was trying to run the Docker image. The reason for this issue was that, during JAR execution, it was not able to locate the main class.

Below is the main class, HelloApplication, and the pom.xml file. It seems that the Spring Boot Maven plugin was missing, along with the configuration for the manifest (mainClass).

HelloApplication.java

package com.techbyteslearn.lab.springboot.application;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class HelloApplication {

    public static void main(String[] args) {
        SpringApplication.run(HelloApplication.class, args);
    }
}

pom.xml

<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>sample-hello-microservice-springboot</groupId>
    <artifactId>sample-hello-microservice-springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <description>Sample Hello microservice with Spring Boot.</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
    </parent>

    <dependencies>

        <!-- Setup Spring Boot -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <!-- Setup Spring MVC & REST with Embedded Tomcat -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

    </dependencies>

    <build>
        <sourceDirectory>src</sourceDirectory>

        <plugins>

            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>
                                com.techbyteslearn.lab.springboot.application.HelloApplication
                            </mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>

Solution:

I added the Spring Boot Maven plugin and configured the main class in the pom.xml file.

After making this change, the JAR was created with the required manifest information, and the application started working fine when the JAR was executed.

You can see the screenshot below to see the result.

Checking on browser.

Hope this will help you.