RFR: JDK-8291974 PrivateCredentialPermission should not use local variable to enable debugging [v3]

[Sean Mullan]

On Tue, 4 Oct 2022 23:45:24 GMT, Mark Powers <mpowers at openjdk.org> wrote:

>> https://bugs.openjdk.org/browse/JDK-8291974
>
> Mark Powers has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Text Blocks
>  - long line

test/jdk/javax/security/auth/PrivateCredentialPermission/Serial2.java line 29:

> 27:  * @summary     PrivateCredentialPermission should not use local variable to enable debugging
> 28:  *              implementation-dependent class
> 29:  * @run main/othervm/policy=Serial.policy Serial2

I think you can remove `main/othervm/policy=Serial.policy` (actually you can remove the whole `@run` line then).
The policy argument causes the test to run with a SecurityManager enabled, and there isn't any reason that this test needs to do that AFAICT. Also that policy file is for other tests in this directory for accessing the file system or JAAS credentials, which you are not accessing in this test.

test/jdk/javax/security/auth/PrivateCredentialPermission/Serial2.java line 58:

> 56: 
> 57:             // Deserialize input stream and create a new object.
> 58:             ObjectInputStream ois = new ObjectInputStream(is);

Use try-with resources here so the input stream is automatically closed even if there are exceptions.

test/jdk/javax/security/auth/PrivateCredentialPermission/Serial2.java line 61:

> 59:             PrivateCredentialPermission pcp2 =
> 60:                     (PrivateCredentialPermission)ois.readObject();
> 61:             is.close();

Not necessary as BAIS.close() is a no-op.

test/jdk/javax/security/auth/PrivateCredentialPermission/Serial2.java line 79:

> 77:         } catch (Exception e) {
> 78:             e.printStackTrace();
> 79:             throw new SecurityException("Serial test failed");

If you include e as the cause (2nd argument) of `SecurityException` then you don't need to print the stack trace on line 78.

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PR: https://git.openjdk.org/jdk/pull/10206