RFR: 7951: Factor out commonly used test helper classes from org.openjdk.jmc.common.test into dedicated test library module [v5]

[Marcus Hirt]

On Mon, 20 Feb 2023 18:38:22 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> Triggered by an issue in project core/tests/org.openjdk.jmc.common.test, I came up with a little refactoring.
>> 
>> So, org.openjdk.jmc.common.test is somewhat of a hybrid project. It contains both, some common test scaffolding classes plus some actual tests for the org.openjdk.jmc.common module.
>> 
>> According to our special setup, which is not really like what maven would expect, we have all sources, also for the tests in the src/main/java folder. With a little tweak, that is specifying <testSourceDirectory>${project.basedir}/src/main/java</testSourceDirectory> in the pom.xml, we can direct maven to consume the tests from there instead of the usually expected src/test/java subfolder. However, when updating the eclipse project configuration from that pom.xml, the project would not export the test helper classes to other modules within eclipse any more.
>> 
>> I'm hereby factoring out the test helper classes into a new module called core/tests/org.openjdk.jmc.testlib. This module will then only serve as a test helper library but not contain any actual tests.
>> 
>> Furthermore I include some other cleanups in project and manifest files, e.g. removal of .settings files which are .gitignored because they would be generated when importing the JMC projects into Eclipse.
>
> Christoph Langer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update copyright years

Marked as reviewed by hirt (Lead).

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PR: https://git.openjdk.org/jmc/pull/451