RFR: 8368846: java/io/File/createTempFile/TargetDirectory fails when run by root user

[Brian Burkhalter]

On Mon, 29 Sep 2025 08:28:38 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> The test checks whether writing to a read-only directory throws a `IOException`. This test is not applicable when the user running the test is root. Thus, I propose to skip it.
> 
> I converted the class to several JUnit tests, so we can use `@DisabledIf`.

test/jdk/java/io/File/createTempFile/TargetDirectory.java line 54:

> 52: class TargetDirectory {
> 53: 
> 54:     @TempDir

In my testing I saw this output for each of the four sub-tests:

INFO: Skipping cleanup of temp dir [...] for field TargetDirectory.tempDir due to CleanupMode.NEVER.

Should this have `CleanupMode.ALWAYS`? In the old version of the test there were explcit calls to `File.delete`.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27542#discussion_r2415232784