Sightly Integration Test execution fails for me

[Konrad Windszus]

I just tried to execute the Sightly Integration Tests and I get the following 
error:

...
Tests run: 336, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 3.994 sec <<< 
FAILURE! - in io.sightly.tck.TestsRunner
String Expressions: String quotes and escaping - 
#unicode_escape(io.sightly.tck.tests.TestBuilder$1)  Time elapsed: 0.007 sec  
<<< FAILURE!
junit.framework.AssertionFailedError: Expected value 'This '&Atilde;' is a 
string with unicode escaping' for selector '#unicode_escape'. Instead we got 
'This '??' is a string with unicode escaping'. Please check the expected markup 
from /testfiles/output/exprlang/strings.html.
        at junit.framework.Assert.fail(Assert.java:47)
        at junit.framework.Assert.assertTrue(Assert.java:20)
        at io.sightly.tck.tests.TestBuilder$1.runTest(TestBuilder.java:146)


Results :

Failed tests: 
  TestBuilder$1.runTest:146 Expected value 'This '&Atilde;' is a string with 
unicode escaping' for selector '#unicode_escape'. Instead we got 'This '??' is 
a string with unicode escaping'. Please check the expected markup from 
/testfiles/output/exprlang/strings.html.

Tests run: 340, Failures: 1, Errors: 0, Skipped: 0
...

This happens with the most recent trunk and I just recompiled the XSS module on 
my own before that.

I am using JDK 1.7.0_55 on a Mac.

Any ideas what might be wrong?
Is the code relying on the default encoding maybe?


Thanks,
Konrad