Do not run tests using Java 14 preview features on this Java 15 compiler
These tests need a Java 14 level AspectJ compiler, because they use
version-specific preview features. This compiler has been upgraded
to a Java 15 compliant JDT Core already, i.e. it does not support
preview features of a previous version anymore.
An error message similar to the above explanation will appear when
trying to run any XMLBasedAjcTestCaseForJava14Only subclass, such as
Ajc196PreviewFeaturesTests (currently the only one).
When running AllTestsAspectJ196, Ajc196PreviewFeaturesTests will not be
added to the test suite anymore.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Make sure Java 14-only tests using preview are not executed on JVM 15+
Some Ajc196 tests are using preview features (see .../ajc196.xml), i.e.
they will fail on Java 15+ because code compiled with '--enable-preview'
can only run on the same JVM version, not on a more recent one. Hence,
the preview-using tests are now being excluded in order to make the
build run on Java 15, even though no Java 15 features are present in the
current 1.9.7 snapshot.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>