Cannot resolve Mockito dependency in a Tycho project [duplicate] - maven-3

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How to reference mockito within tycho?
I am trying to get a test feature project building with Tycho, but it fails to resolve dependencies listed in my pom from the Maven central repository that is listed in my parent pom. Here is the relevant part from my parent pom:
<properties>
<tycho-version>0.12.0</tycho-version>
</properties>
<repositories>
<repository>
<id>helios</id>
<layout>p2</layout>
<url>http://download.eclipse.org/releases/helios/</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<name>Maven Plugin Repository</name>
<url>http://repo1.maven.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
</pluginRepository>
</pluginRepositories>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>${tycho-version}</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>target-platform-configuration</artifactId>
<version>${tycho-version}</version>
<configuration>
<pomDependencies>consider</pomDependencies>
<resolver>p2</resolver>
<environments>
<environment>
<os>linux</os>
<ws>gtk</ws>
<arch>x86_64</arch>
</environment>
<environment>
<os>win32</os>
<ws>win32</ws>
<arch>x86</arch>
</environment>
</environments>
</configuration>
</plugin>
</plugins>
</build>
and here my feature pom:
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>parent</artifactId>
<groupId>com.example</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<groupId>com.example</groupId>
<artifactId>com.example.testing.feature</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>eclipse-feature</packaging>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.8.5</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
</dependency>
</dependencies>
when I run mvn clean package on my feature project, I get the following:
[INFO] Adding repository http://download.eclipse.org/releases/helios/
[INFO] Adding repository http://download.eclipse.org/releases/helios/
[DEBUG] Added p2 repository helios (http://download.eclipse.org/releases/helios/
)
[DEBUG] Ignoring Maven repository central (http://repo1.maven.org/maven2)
and then my build fails, because my dependency cannot be resolved. Am I missing something? Is this because of the p2 resolver configured for target-platform-configuration?

Answer 1

Indeed it seems you are correct.
First, create a Target Definition file (.target) and put it inside a Maven project, see here for example target: https://github.com/eclipsesource/com.eclipsesource.tycho.aspectj.demo/blob/master/platform/indigo.target
You need to attach the .target file to the artifact, using the build helper:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.3</version>
<executions>
<execution>
<id>attach-artifacts</id>
<phase>package</phase>
<goals>
<goal>attach-artifact</goal>
</goals>
<configuration>
<artifacts>
<artifact>
<file>indigo.target</file>
<type>target</type>
<classifier>indigo</classifier>
</artifact>
</artifacts>
</configuration>
</execution>
</executions>
</plugin>
(from https://github.com/eclipsesource/com.eclipsesource.tycho.aspectj.demo/blob/master/platform/pom.xml )
Then, in the parent POM or the plug-in projects that use that target definition file, you need to configure the "target" of target-platform-configuration Maven plugin, for example:
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>target-platform-configuration</artifactId>
<version>${tycho-version}</version>
<configuration>
<resolver>p2</resolver>
<ignoreTychoRepositories>true</ignoreTychoRepositories>
<target>
<artifact>
<groupId>com.eclipsesource.sandbox.weaving.demo</groupId>
<artifactId>com.eclipsesource.sandbox.weaving.demo.platform</artifactId>
<version>0.1.0-SNAPSHOT</version>
<classifier>indigo</classifier>
</artifact>
</target>
<environments>
<environment>
<os>${build.os}</os>
<ws>${build.ws}</ws>
<arch>${build.arch}</arch>
</environment>
</environments>
</configuration>
</plugin>
(taken from https://github.com/eclipsesource/com.eclipsesource.tycho.aspectj.demo/blob/master/releng/pom.xml )
Then your project(s) should build very nicely using Tycho. :-) If your .target references remote p2 repositories and not already in the p2 bundle pool, the necessary artifacts will be downloaded automatically.
Good luck!
Known Issue:
[WARNING] Target location type: Profile is not supported
As of Tycho 0.12.0, It means the "Eclipse Installation" target source type cannot be used with Tycho (yet?), along with "Directory" and "Features".
Solution: Use the "Update Site" target source.
If you don't have yet an update site, here's to generate an update site from an Eclipse (or from any folder containing bundles, for that matter):
/opt/eclipse_rcp/eclipse -consolelog -nosplash -verbose \
-application org.eclipse.equinox.p2.publisher.FeaturesAndBundlesPublisher \
-metadataRepository file:/home/ceefour/p2/bonita/ \
-artifactRepository file:/home/ceefour/p2/bonita/ \
-source /home/ceefour/BOS-5.5.1/studio/ \
-publishArtifacts
Note:
change /opt/eclipse_rcp to your own Eclipse SDK installation
metadataRepository and artifactRepository is the folder where the new update site will be created
source is --you guessed it-- the folder/installation containing the original bundles