TG-23051 throwException and throwExceptionFactory for @InTestsMock

[ksunandr]

TG-23051
Changed annotations

• @InTestsMock - new attributes throwException and throwExceptionFactory
  Supported by Diffblue Cover from 2025.06.02
  See https://docs.diffblue.com/features/cover-annotations/mocking-annotations for more details
  Full Changelog: [v1.5.0]...[v1.6.0]

[Copilot]

Pull Request Overview

This PR adds support for specifying an exception or an exception factory on the @InTestsMock annotation and introduces a marker class to represent “no exception.”

• Introduce NoException marker class under exceptions package.
• Add throwException and throwExceptionFactory attributes to InTestsMock.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/main/java/com/diffblue/cover/annotations/exceptions/NoException.java	New marker class to indicate the absence of an exception.
src/main/java/com/diffblue/cover/annotations/InTestsMock.java	Added throwException and throwExceptionFactory attributes.

Comments suppressed due to low confidence (2)

src/main/java/com/diffblue/cover/annotations/InTestsMock.java:96

• Restrict the return type to Class<? extends Throwable> for throwException() to enforce at compile time that only exception types are allowed.

Class<?> throwException() default NoException.class;

src/main/java/com/diffblue/cover/annotations/InTestsMock.java:96

• Add unit tests that verify annotation processing for throwException and throwExceptionFactory to ensure the new behavior is correctly supported.

Class<?> throwException() default NoException.class;