#1000919
  • Created on
    2012-02-27 13:10
  • Reported by
    jeppenejsum
  • Status
    Fixed
  • Priority
    Normal (3)
  • Assigned to
    skyluc
  • Milestone
    2.0.x
  • Plan Level
    -
  • Permission type
    Public
  • Due Date
    -

Attachments

Classpath ordering prevents launching of specs test cases

With a .classpath generated from our build tool (Gradle), I'm unable to launch specs2 test cases using JUnit. I get the following error:

java.lang.NoClassDefFoundError: scala/ScalaObject
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClass(RemoteTestRunner.java:693)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClasses(RemoteTestRunner.java:429)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassNotFoundException: scala.ScalaObject
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	... 42 more



Steps to reproduce:

  1. git clone git://github.com/jeppenejsum/liftstart.git
  2. cd liftstart/
  3. ./gradlew eclipse
  4. Import the generated project into Eclipse, note it has the Scala nature and the "Scala Library"
  5. Navigate to src/test/scala/code/snippet/HelloWorldTest.scala file
  6. Right click the class name and select "Run As -> Junit test". This shows the error
  7. Now right click project and select "Scala -> Add Scala Library to build path". Note this changes the order of the libs.
  8. Run the test again, it now succeeds
User picture
  on 2012-03-27 15:11 *
By skyluc
I might be related to #1000786
User picture
  on 2012-05-07 10:02 *
By Mirco Dotta
Milestone set to Helium
User picture
  on 2012-05-08 09:11 *
By skyluc
Version changed from 2.0.0-final-28 to 2.1.0-nightly-29
Operative system changed from Mac OSX to All
Status changed from New to Accepted
This appears to be caused by the 'kind' of the Scala container. It is currently set to IClasspathContainer.K_DEFAULT_SYSTEM, which seems to mean that Eclipse will only add it to the bootstrap classpath part of the command line if the buildpath ordering requires it. Otherwise it assumes it is there by default.

Using the "Scala -> Add Scala Library to build path" command fixes the buildpath order, and resolve the problem.

Switching to IClasspathContainer.K_SYSTEM instead seems to fix the problem (the scala library is always added to the bootstrap classpath).

Regression tests would be needed for a complete fix.
User picture
  on 2012-06-18 16:18 *
By skyluc
Assigned to set to skyluc
Milestone changed from Helium to 2.0.x
User picture
  on 2012-06-19 13:08 *
By skyluc
The problem is not visible when launching a 'Scala application'. I created ticket #1001091 to get a consistent behavior.
User picture
  on 2012-06-21 09:18 *
By skyluc
Status changed from Accepted to Fixed
(In scala-ide:1e308b47e6c6c905deaae19374ca979138f01159) Changed the 'kind' of the Scala library container

See re #1000919 for explanation about container kind.
Added a regression test.

Fix #1000798
Fix #1000919
Fix #1001022

Branch: master
User picture
  on 2012-06-21 09:24 *
By skyluc
(In scala-ide:f49c749a78e58c18c5e7ec4ec92fb88941db87ef) Changed the 'kind' of the Scala library container

See re #1000919 for explanation about container kind.

Fix #1000798
Fix #1000919
Fix #1001022
(manually merged from 1e308b47e6c6c905deaae19374ca979138f01159)

Branch: release/scala-ide-2.0.x
User picture
  on 2012-06-22 06:12 *
By skyluc
(In scala-ide:1e308b47e6c6c905deaae19374ca979138f01159) Changed the 'kind' of the Scala library container

See re #1000919 for explanation about container kind.
Added a regression test.

Fix #1000798
Fix #1000919
Fix #1001022

Branch: platform/juno
User picture
  on 2012-06-28 16:00 *
By Mirco Dotta
Fixed in version set to 2.0.2
Eclipse version changed from Indigo to Indigo - Eclipse 3.7