How to configurate java.class.path property under a given test

Discussion:

David

2007-10-23 10:43:58 UTC

Dear members,

I have a method that find a file on classpath and I want to check that it works fine. My testing class works fine under Eclipse, for example but under mave it doesn't work properly. The reason is that during the testing process I assume there is at least a directory location on classpath, but under maven the java.class.path, contains only jar files. So I can't check if some file exist on some directory of my classpath. I would need for my test, just the "." directory, but I don't find the way to add this information before the test start.

On the

I have seen other posts about this problem, but without any real good solution, for example:
http://www.mail-archive.com/***@maven.apache.org/msg47276.html

On surefire documentation:
http://maven.apache.org/plugins/maven-surefire-plugin/test-mojo.html

probably using properly one of the following properties: environmentVariables, jvm, could be solved, but I don't figure out how to deal with this.

Thanks,

David

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Tim Kettler

2007-10-23 13:07:48 UTC

Permalink

Post by David
Dear members,
I have a method that find a file on classpath and I want to check that it works fine. My testing class works fine
under Eclipse, for example but under mave it doesn't work properly. The reason is that during the testing process I
assume there is at least a directory location on classpath, but under maven the java.class.path, contains only jar files.

That's not true. This is from one of my projects:

[DEBUG] (f) classpathElements = [
/home/tik/Develop/wallabystreet/mtn4java/target/classes,
/home/tik/Develop/wallabystreet/mtn4java/target/test-classes,
/home/tik/.m2/repository/org/codehaus/plexus/plexus-utils/1.4.1/plexus-utils-1.4.1.jar,
/home/tik/.m2/repository/net/sf/oval/oval/1.0/oval-1.0.jar,
/home/tik/.m2/repository/org/testng/testng/5.1/testng-5.1-jdk15.jar
]

The classes and test-classes directories are on the classpath.

Post by David
So I can't check if some file exist on some directory of my classpath. I would need for my test, just the "." directory,
but I don't find the way to add this information before the test start.

In fact, it's not good to access resources in the classpath directly via
the file system. You should access them as resources via the
classloader. See this thread [1] for an example.

-Tim

[1]
http://www.nabble.com/Problems-with-loading-non-Java-resources-from-classpath-in-JUnit--tests-tf3734983s177.html#a10605055

Post by David
On the
http://maven.apache.org/plugins/maven-surefire-plugin/test-mojo.html
probably using properly one of the following properties: environmentVariables, jvm, could be solved, but I don't figure out how to deal with this.
Thanks,
David
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David

2007-10-23 13:42:11 UTC

Permalink

Dear Tim,

It works for me under eclipse, but not under maven from command line. On my code what I use is to get the system property using:

System.getProperty("java.class.path");

Are you ussing Maven 1.x?, becuase on the following link:
http://maven.apache.org/guides/mini/guide-maven-classloading.html

There is a comment about a different behaviour when using Maven 1.x, I am using Maven 2.x

This is my output:

P:\ceb2b2000-commons\ceb2b2000-commons-io>mvn test
[INFO] Scanning for projects....
[INFO] -------------------------------------------------------------------------
---
[INFO] Building ceb2b2000-commons-io
[INFO] task-segment: [test]
[INFO] -------------------------------------------------------------------------
---
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [surefire:test]
[INFO] Surefire report directory: P:\ceb2b2000-commons\ceb2b2000-commons-io\targ
et\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.ceb2b2000.commons.io.TestFileUtils
System.getProperty("java.class.path")=
C:\Documents and Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-archiv
er\1.0-alpha-7\plexus-archiver-1.0-alpha-7.jar;C:\Documents and Settings\dleal\.
m2\repository\org\apache\maven\surefire\surefire-api\2.3\surefire-api-2.3.jar;C:
\Documents and Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-containe
r-default\1.0-alpha-8\plexus-container-default-1..0-alpha-8.jar;C:\Documents and
Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-utils\1.1\plexus-utils-
1.1.jar;C:\Documents and Settings\dleal\.m2\repository\org\apache\maven\surefire
\surefire-booter\2.3\surefire-booter-2.3.jar;C:\Documents and Settings\dleal\.m2
\repository\classworlds\classworlds\1.1-alpha-2\classworlds-1.1-alpha-2.jar;C:\D
ocuments and Settings\dleal\.m2\repository\commons-lang\commons-lang\2.1\commons
-lang-2.1.jar;C:\Documents and Settings\dleal\.m2\repository\junit\junit\3.8..1\j
unit-3.8.1.jar
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Tue Oct 23 15:36:26 CEST 2007
[INFO] Final Memory: 4M/7M
[INFO] ------------------------------------------------------------------------
P:\ceb2b2000-commons\ceb2b2000-commons-io>

----- Original Message ----
From: Tim Kettler <***@udo.edu>
To: Maven Users List <***@maven.apache.org>
Sent: Tuesday, October 23, 2007 3:07:48 PM
Subject: Re: How to configurate java.class.path property under a given test

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Tim Kettler

2007-10-23 15:02:07 UTC

Permalink

Post by David
Dear Tim,
System.getProperty("java.class.path");

The property seems to contain the classpath used for the forked surefire
execution and doesn't contain the project classes & dependencies.
Surefire uses a custom classloader to provide the project's classes. You
can file a rfe to the surefire project that it should modify the
property (if that's possible at all) to contain the project's classes
and dependencies.

Post by David
http://maven.apache.org/guides/mini/guide-maven-classloading.html
There is a comment about a different behaviour when using Maven 1.x, I am using Maven 2.x

No, I'm on m2 and I never extensively used m1, So I can't really comment
on differences between both.

Post by David
P:\ceb2b2000-commons\ceb2b2000-commons-io>mvn test
[INFO] Scanning for projects....
[INFO] -------------------------------------------------------------------------
---
[INFO] Building ceb2b2000-commons-io
[INFO] task-segment: [test]
[INFO] -------------------------------------------------------------------------
---
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [surefire:test]
[INFO] Surefire report directory: P:\ceb2b2000-commons\ceb2b2000-commons-io\targ
et\surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.ceb2b2000.commons.io.TestFileUtils
System.getProperty("java.class.path")=
C:\Documents and Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-archiv
er\1.0-alpha-7\plexus-archiver-1.0-alpha-7.jar;C:\Documents and Settings\dleal\.
\Documents and Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-containe
r-default\1.0-alpha-8\plexus-container-default-1..0-alpha-8.jar;C:\Documents and
Settings\dleal\.m2\repository\org\codehaus\plexus\plexus-utils\1.1\plexus-utils-
1.1.jar;C:\Documents and Settings\dleal\.m2\repository\org\apache\maven\surefire
\surefire-booter\2.3\surefire-booter-2.3.jar;C:\Documents and Settings\dleal\.m2
\repository\classworlds\classworlds\1.1-alpha-2\classworlds-1.1-alpha-2.jar;C:\D
ocuments and Settings\dleal\.m2\repository\commons-lang\commons-lang\2.1\commons
-lang-2.1.jar;C:\Documents and Settings\dleal\.m2\repository\junit\junit\3.8..1\j
unit-3.8.1.jar
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Tue Oct 23 15:36:26 CEST 2007
[INFO] Final Memory: 4M/7M
[INFO] ------------------------------------------------------------------------
P:\ceb2b2000-commons\ceb2b2000-commons-io>
----- Original Message ----
Sent: Tuesday, October 23, 2007 3:07:48 PM
Subject: Re: How to configurate java.class.path property under a given test

[DEBUG] (f) classpathElements = [
/home/tik/Develop/wallabystreet/mtn4java/target/classes,
/home/tik/Develop/wallabystreet/mtn4java/target/test-classes,
/home/tik/.m2/repository/org/codehaus/plexus/plexus-utils/1.4.1/plexus-utils-1.4.1.jar,
/home/tik/.m2/repository/net/sf/oval/oval/1.0/oval-1.0.jar,
/home/tik/.m2/repository/org/testng/testng/5.1/testng-5.1-jdk15.jar
]
The classes and test-classes directories are on the classpath.

In fact, it's not good to access resources in the classpath directly via
the file system. You should access them as resources via the
classloader. See this thread [1] for an example.
-Tim
[1]
http://www.nabble.com/Problems-with-loading-non-Java-resources-from-classpath-in-JUnit--tests-tf3734983s177.html#a10605055

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David

2007-10-23 15:47:28 UTC

Permalink

Dear members,

Concerning to the original problem, I think the solution could come from:

<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<forkMode>once</forkMode>
<systemProperties>
<property>
<name>java.class.path</name>
<value>
${maven.test.classpath};${path.separator}
</value>
</property>
</systemProperties>
</configuration>
</plugin>
</plugins>

Now when I run my test, in effect the property java.class.path was changed, I obtain:

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.ceb2b2000.commons.io.TestFileUtils
System.getProperty("java.class.path")=
maven.test.classpath;.

So, it understand the property: ${path.separator} but it doesn't understand maven.test.classpath.

¿By the way, wher can I find the list of available maven properties?

So, the problem is almoust solved, I need only to tell maven it obtain the value of maven.test..classpath.

Thanks in advance,

David

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