RFR: 8356309: Fix issues uncovered after running jpackage tests locally with installing test packages

[Alexey Semenyuk]

On Fri, 25 Apr 2025 18:07:50 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

> Fix issues uncovered in the tests after local test runs with the installation of test packages:
>  - LinuxHelper: fix a regression from [JDK-8354988](https://bugs.openjdk.org/browse/JDK-8354988). Before the [JDK-8354988](https://bugs.openjdk.org/browse/JDK-8354988) fix, when a process started with Executor didn't write to stdout, `Executor.executeAndGetFirstLineOfOutput()` returned an empty string; after the fix, it throws an exception.
>  - Fix EmptyFolderTest: when an MSI is installed, it can create empty directories. Empty directories are not created only when it is unpacked. We probably never ran EmptyFolderTest in "install test packages" mode; we always executed it in "unpack test packages" mode.
>  -  Fix `PackageTest.Group` to make it work correctly when a test runs jpackage to produce both exe and msi packages, and when they are installed.
>  
> Before the fix, the sequence was:
> 
> for (action in {create, install, uninstall}) {
>   for (test in tests) {
>     for (type in {exe, msi}) {
>       run $action on $test of $type
>     }
>   }
> }
> 
> 
> After the fix, the sequence is:
> 
> for (type in {exe, msi}) {
>   for (action in {create, install, uninstall}) {
>     for (test in tests) {
>       run $action on $test of $type
>     }
>   }
> }
> 
> 
> Additionally:
>  - Add missing `@Test` annotation to PathGroupTest.testNullId() test case;
>  - Fix typo in PListReaderTest: STRING_ARRY -> STRING_ARR**A**Y;
>  - Optimize RuntimeImageTest to not run jlink if external Java runtime is supplied;
>  - Add a test to RuntimeImageTest to verify jpackage strips the "jmod" directory and the "src.zip" file from an external runtime image

@sashamatveev PTAL

-------------

PR Comment: https://git.openjdk.org/jdk/pull/24884#issuecomment-2855904552