RFR: Initial section on testing [v6]

[Jesper Wilhelmsson]

On Thu, 22 Oct 2020 15:08:29 GMT, Lance Andersen <lancea at openjdk.org> wrote:

>> Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Link to html version of testing docs
>
> src/index.md line 350:
> 
>> 348: * The test should pass reliably on all supported platforms - watch out for platform-specific differences such as path separators
>> 349: 
>> 350: The JTReg documentation has a section on [how to write good JTReg tests](https://openjdk.java.net/jtreg/writetests.html).
> 
> Perhaps include a comment to indicate that binary files should not be checked into the workspace and if the test needs to use one, the test should create it in some fashion.
> 
> Also if possible avoid shell scripts and relying on external commands as much as necessary.

Yes. Added.

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PR: https://git.openjdk.java.net/guide/pull/30