Hi all,
First of all, just for those that aren't familiar, Scala is one of the family
of languages that compiles to JVM bytecode. Arguably the most sophisticated of
them.
I can't run my Scala unit tests with Maven (the unit test suite I'm using uses
JUnit), and I think I know why, but I don't know how to solve the problem.
First, let me show you the output of the maven compile phase, using DEBUG
output, which does run correctly:
mvn -X compile
.
.
.
[DEBUG] cmd:
/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/bin/java
-classpath
/Users/Ken/.m2/repository/org/scala-lang/scala-library/2.8.0/scala-library-2.8.0.jar:/Users/Ken/.m2/repository/org/scala-lang/scala-compiler/2.8.0/scala-compiler-2.8.0.jar:/Users/Ken/.m2/repository/org/scala-tools/maven-scala-plugin/2.14.2-SNAPSHOT/maven-scala-plugin-2.14.2-SNAPSHOT.jar
-Xbootclasspath/a:/Users/Ken/.m2/repository/org/scala-lang/scala-library/2.8.0/scala-library-2.8.0.jar
org_scala_tools_maven_executions.MainWithArgsInFile scala.tools.nsc.Main
/private/var/folders/J6/J6Md7QzoH-apMu-1gFqvaE+++TM/-Tmp-/scala-maven-5484869999675003034.args
[INFO] prepare-compile in 0 s
[INFO] compile in 11 s
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
The point here is that scala-library is on the classpath.
Now for a run of mvn test:
mvn -X test
.
.
.
[INFO] Surefire report directory:
/Users/Ken/mvn_projects/rex/target/surefire-reports
Forking command line: /bin/sh -c cd /Users/Ken/mvn_projects/rex &&
/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/bin/java -jar
/var/folders/J6/J6Md7QzoH-apMu-1gFqvaE+++TM/-Tmp-/surefirebooter1692256912894030002.jar
/var/folders/J6/J6Md7QzoH-apMu-1gFqvaE+++TM/-Tmp-/surefire9017473591909367701tmp
/var/folders/J6/J6Md7QzoH-apMu-1gFqvaE+++TM/-Tmp-/surefire6246108229640345050tmp
org.apache.maven.surefire.booter.SurefireExecutionException: scala/ScalaObject;
nested exception is java.lang.NoClassDefFoundError: scala/ScalaObject
java.lang.NoClassDefFoundError: scala/ScalaObject
at java.lang.ClassLoader.defineClass1(Native Method)
.
.
.
The point here is that scala-library is nowhere to be seen. I don't know if
maven puts into one of the tmp directories (that would seem odd), but my guess
is that there should be some mention of scala-library on the command line, but
there isn't.
And here's my pom.xml file. AFAIK (I'm just learning maven), this should mean
that scala-library is a dependency across all phases:
<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>your.proj.gid</groupId>
<artifactId>rex</artifactId>
<version>1.0-SNAPSHOT</version>
<inceptionYear>2010</inceptionYear>
<properties>
<scala.version>2.8.0</scala.version>
</properties>
<repositories>
<repository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>snapshots.scala-tools.org</id>
<name>Scala-Tools Maven2 Repository - Snapshots</name>
<url>http://scala-tools.org/repo-snapshots</url>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest</artifactId>
<version>1.2</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<testSourceDirectory>src/test/scala</testSourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<version>2.14.2-SNAPSHOT</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.6</version>
<configuration>
<includes>
<include>**/*Test.*</include>
<include>**/*Suite.*</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<version>2.14.2-SNAPSHOT</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
</plugin>
</plugins>
</reporting>
</project>
Thanks,
Ken
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