Add thread mode to @Timeout

[gilbertojrequena]

Overview

This PR is an attempt to solve the issue #2087, allowing to set the thread mode in the @Timeout annotation.

Instead of calling the enum Mode, I called it ThreadMode since there was already a configuration parameter called TIMEOUT_MODE_PROPERTY_NAME which can lead to confusion.

INFERRED is used as default, in case no thread mode is provided by the configuration parameter SAME_THREAD is used as default.

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Definition of Done

• There are no TODOs left in the code
• Method preconditions are checked and documented in the method's Javadoc
• Coding conventions (e.g. for logging) have been followed
• Change is covered by automated tests including corner cases, errors, and exception handling
• Public API has Javadoc and @API annotations
• Change is documented in the User Guide and Release Notes
• All continuous integration builds pass

[marcphilipp]

@gilbertojrequena Thanks a lot for the PR! I changed the implementation to reuse assertTimeoutPreemptively so that they behave exactly the same. Any objections?

[gilbertojrequena]

@gilbertojrequena Thanks a lot for the PR! I changed the implementation to reuse assertTimeoutPreemptively so that they behave exactly the same. Any objections?

Hi @marcphilipp, Good idea! I have no objections.