Grails test application does not work on CI server, but not on developer's machine

I have two machines, one Continuus integration server and one developer machine.

Both machines use the same version of java, maven and grails, and both are running Ubuntu. The only difference I can think of is that CI is in a virtualized environment.

Some evidence:

CI java -version

java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode) 

Dev java -version

java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode) 

CI mvn -version

Apache Maven 2.2.1 (rdebian-1)
Java version: 1.6.0_24
Java home: /usr/lib/jvm/java-6-sun-1.6.0.24/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-31-server" arch: "amd64" Family: "unix" 

Dev mvn -version

Apache Maven 2.2.1 (rdebian-1)
Java version: 1.6.0_24
Java home: /usr/lib/jvm/java-6-sun-1.6.0.24/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-31-generic" arch: "amd64" Family: "unix" 

Ci grails

Welcome to Grails 1.3.7 - http://grails.org/
Licensed under Apache Standard License 2.0
Grails home is set to: /usr/local/lib/grails-1.3.7 

Dev grails

Welcome to Grails 1.3.7 - http://grails.org/
Licensed under Apache Standard License 2.0
Grails home is set to: /home/netbrain/dev/apps/grails-1.3.7 

I did a clean check using version control on both machines and deleted folders ~/.m2and ~/.ivy2to avoid any indescrepencies.

When I run grails test-appon my CI server, 6 tests seem to fail. When they in my DEV system all go in the same case.

CI grails test-app

Tests Completed in 28213ms ...
-------------------------------------------------------
Tests passed: 14
Tests failed: 6
------------------------------------------------------- 

DEV grails test-app

Tests Completed in 25889ms ...
-------------------------------------------------------
Tests passed: 20
Tests failed: 0
------------------------------------------------------- 

, , , :

junit.framework.AssertionFailedError: expected:<1> but was:<0>
not-null property references a null or transient value

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, - hibernate/memory-database/test phase.

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!

, :

• ~/.m2, ~/.ivy2, ~/.grails
• run grails test-app

- CI, dev-.

EDIT

..

, CI, , grails test-app :integration path.to.failing.tests PASS! grails FAIL!: (

, ...