Some Seam component tests are throwing the Exceptions from tearDown() method (mostly on ResourceException occuring while cleaning up the resources) even if the test itself successfully pased.
This results in many failed tests which are actually non-failing.

For ecample:

org.eclipse.core.internal.resources.ResourceException: Problems encountered while deleting resources.
at org.eclipse.core.internal.resources.Resource.delete(Resource.java:800)
at org.eclipse.core.internal.resources.Project.delete(Project.java:352)
at org.jboss.tools.seam.core.test.project.facet.AbstractSeamFacetTest.tearDown(AbstractSeamFacetTest.java:134)
at org.jboss.tools.seam.core.test.project.facet.Seam2FacetInstallDelegateTest.tearDown(Seam2FacetInstallDelegateTest.java:93)
at org.jboss.tools.seam.core.test.project.facet.Seam20XFacetTestSuite201GA$Seam2FacetInstallDelegateTestSetup.tearDown(Seam20XFacetTestSuite201GA.java:42)