RFR: 8287873: Add test for using -XX:+AutoCreateSharedArchive with different JDK versions

[Ioi Lam]

On Wed, 4 Jan 2023 20:07:48 GMT, Matias Saavedra Silva <matsaave at openjdk.org> wrote:

> This is an enhancement of the test case in [JDK-8296754](https://bugs.openjdk.org/browse/JDK-8296754), which tests against an archive created by the "boot JDK", which is usually set as the previous official JDK release when building the JDK repo.
> 
> If it's able to connect to an artifactory that hosts valid JDK releases:
>      - Download and install previous JDK versions (19 through N) from the artifactory
>         where N == java.lang.Runtime.version​().major() - 1
>      - test the interaction of the current JDK versus each of the previous releases.
> 
> If it's not able to connect to such an artifactory, revert to the existing logic in TestAutoCreateSharedArchiveUpgrade.java (use the test.boot.jdk or test.previous.jdk properties). Verified with tier1-4 tests.

test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive/TestAutoCreateSharedArchiveUpgrade.java line 209:

> 207:             case "Windows":
> 208:                 jdkArtifactMap.put("version", version);
> 209:                 jdkArtifactMap.put("build_number", build);

The above two lines can be shared across all oses.

test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive/TestAutoCreateSharedArchiveUpgrade.java line 256:

> 254:         }
> 255:         return osName;
> 256:     }

Instead of writing your own code for detecting OS/architecture, etc, you should use [test/lib/jdk/test/lib/Platform.java
](https://github.com/openjdk/jdk/blob/master/test/lib/jdk/test/lib/Platform.java)

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PR: https://git.openjdk.org/jdk/pull/11852