Create executable JAR using mvn package and run JUnit tests

Question

I am trying to package my code into a single executable JAR and then run the tests from the JAR. When I run

mvn package

and then

java -jar -cp ~/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar:~/.m2/repository/junit/junit/4.11/junit-4.11.jar:. elevator-1.0-SNAPSHOT.jar cscie55.hw3.elevator.ElevatorTest

I get an error:

Error: Could not find or load main class elevator-1.0-SNAPSHOT.jar

If I run just

java -jar elevator-1.0-SNAPSHOT.jar

I get an error saying no main manifest attribute, in target/elevator-1.0-SNAPSHOT.jar.

I then tried following the advice in Can't execute jar- file: “no main manifest attribute”

But none of my classes or tests have a main method. I'm using org.junit.runner.JUnitCore as the main method, to just run the tests.

I tried adding it as the main class in the maven-jar-plugin configuration:

        <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.0.2</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>org.junit.runner.JUnitCore</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

But got an error stating:

Error: Could not find or load main class org.junit.runner.JUnitCore

Caused by: java.lang.ClassNotFoundException: org.junit.runner.JUnitCore

I also tried creating a TestRunner class that has a main method:

public class TestRunner {
    public static void main(String[] args) {
        JUnitCore.main("introtojava.hw3.elevator.ElevatorTest", "introtojava.hw3.zoo.animals.AnimalsTest");
    }
}

But I received a similar error message.

I tried using the maven-assembly-plugin as suggested in the link above, with the same results.

Completely out of ideas.

My project structure:

├── Projects.iml
├── pom.xml
└── src
    ├── main
    │   └── java
    │       └── introtojava
    │           └── hw3
    │               ├── elevator
    │               │   ├── Building.java
    │               │   ├── Elevator.java
    │               │   ├── ElevatorFullException.java
    │               │   ├── Floor.java
    │               │   └── Passenger.java
    │               └── zoo
    │                   ├── animals
    │                   │   ├── Animal.java
    │                   │   ├── Elephant.java
    │                   │   ├── Hippopotamus.java
    │                   │   ├── Rhinoceros.java
    │                   │   ├── Tiger.java
    │                   │   └── Zebra.java
    │                   └── iface
    │                       ├── Eatable.java
    │                       ├── Playable.java
    │                       └── Speakable.java
    └── test
        └── java
            └── introtojava
                └── hw3
                    ├── TestRunner.java
                    ├── elevator
                    │   └── ElevatorTest.java
                    └── zoo
                        └── animals
                            └── AnimalsTest.java

Relevant bit of my pom.xml file:

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.0.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.0.2</version>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>
                                ${basedir}/target/classes/src
                            </outputDirectory>
                            <resources>
                                <resource>
                                    <directory>${basedir}/src</directory>
                                    <includes>
                                        <include>**/*.java</include>
                                    </includes>
                                    <filtering>true</filtering>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
            </plugin>
            <plugin>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.18.1</version>
            </plugin>

            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.0.2</version>
            </plugin>
            <plugin>
                <artifactId>maven-install-plugin</artifactId>
                <version>2.5.2</version>
            </plugin>
            <plugin>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>2.8.2</version>
            </plugin>
        </plugins>
    </build>
</project>