Maven modules will not find dependencies with scalatest - scala

Question

While working with scalatest I ran into a weird problem. I have a maven project with multiple modules. If I execute mvn test directly in the module. It works without problems, but if I do it in the root folder it complains about missing packages (dependencies) while compiling.
My configuration looks like following:
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest_${scala.shortversion}</artifactId>
<version>3.0.0-SNAP2</version>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest-maven-plugin</artifactId>
<version>1.0</version>
</dependency>
plugin configuration:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.7</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>org.scalatest</groupId>
<artifactId>scalatest-maven-plugin</artifactId>
<version>1.0</version>
<configuration>
<reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
<junitxml>.</junitxml>
<filereports>WDF TestSuite.txt</filereports>
</configuration>
<executions>
<execution>
<id>scala-test</id>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
If I remove from maven-scala-plugin the goals it'll compile but scalatest will not find the test sources and exit with No tests were executed.:
<plugin>
<version>2.15.2</version>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<scalaVersion>${scala.version}</scalaVersion>
</configuration>
</plugin>
Any ideas on what I am doing wrong?!
Cheers

Answer 1

Hard to say without seeing all your poms, but generally speaking:
Define in root Pom all your dependencies in dependencyManagement section, your plugins in pluginManagement section with their configuration. In child poms define only those plugins and dependencies you need.
Keep in mind that xxxManagement sections only build shared definition, kind of root configuration. You still have to define in plugins and dependencies sections what you need but you can omit version and configuration elements.
This will allow all your child poms to run tests in all modules.