java - Running spock unit tests with Maven

Question

On a previous project I used the Spock testing framework to unit test my Java code. I found this really productive so I am trying to add Spock tests to my current project which uses Maven as its build tool (The previous project used Gradle). While I can get Maven to compile my Spock tests (using groovy-eclipse-compiler), I am unable to get Maven to run the tests.

I've made a simple example to demonstrate my problem with 2 files:

• pom.xml
• src/test/java/ASpec.groovy

---

Contents of 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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>my.group</groupId>
    <artifactId>my-artifact</artifactId>
    <version>0.1-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>
            <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-all</artifactId>
            <version>2.0.8</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.spockframework</groupId>
            <artifactId>spock-core</artifactId>
            <version>0.7-groovy-2.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <compilerId>groovy-eclipse-compiler</compilerId>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.codehaus.groovy</groupId>
                        <artifactId>groovy-eclipse-compiler</artifactId>
                        <version>2.8.0-01</version>
                    </dependency>
                    <dependency>
                        <groupId>org.codehaus.groovy</groupId>
                        <artifactId>groovy-eclipse-batch</artifactId>
                        <version>2.1.8-01</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

Contents of ASpec.groovy:

import spock.lang.Specification

class ASpec extends Specification {

    def "Test A"(){
        // Always fail
        expect: false
    }
}

---

When I execute mvn clean test (or mvn clean install) I would expect my single unit test to be run and fail. While it is compiled, Maven does not run it. Does any one know how to run a Spock unit test from Maven (or if it is possible?)

(I have not put my test in a package to keep the example simple. Also I have put my groovy code in src/test/java to avoid configuring the example to pick up source files from an additional directory, again to keep the example as simple as possible.)

Answer 1

This answer is purely supplemental to @PeterNiederwieser's answer. In it he mentions that you can configure the name pattern used by Surefire. Here is an example of what worked for me:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.18</version>
    <configuration>
        <includes>
            <!-- By default only files ending in 'Test' will be included, so also include support for Spock style naming convention -->
            <!-- Oddly enough for Groovy files, *Spec.groovy does not work, but *Spec.java does -->
            <include>**/*Test.java</include>
            <include>**/*Spec.java</include>
        </includes>
    </configuration>
</plugin>

Source

As I mention in the comments, I'm not sure why **/*Spec.groovy didn't work, but I'm happy to be able to use the normal Spock convention here.