2025-01-02

2025-01-02

This release improves the Plugin's Test Review functionality, adds a MaintainedByDiffblue annotation for tests written by Cover and provides improved guidance to help avoid Spring context initialization failures. It also resolves various issues with the CLI and Plugin.

Important Notices

Changes to test code

• Test Method Ordering: In this release, Cover adjusts test method ordering and imports for inner classes. This will cause a one-time churn, resulting in larger-than-usual diffs in your test code.

• Test Method Tagging: In this release, tests created by Cover will be annotated with a MaintainedByDiffblue label. This will cause a one-time churn when recreating tests, resulting in larger-than-usual diffs in your test code. This will enable Cover to combine Diffblue tests and manually written tests into the same test classes in a future release.

Diffblue Cover is now generally available to individual developers and small teams.

We've just launched our Developer Edition license. From today, individual developers can leverage the power of AI they can trust for unit test generation and maintenance.

Enhancements

• Cover now shows a warning if PowerMock is detected in the project under test, as Cover currently has limited support for it. [Ref: TG-22527]

• Cover now provides guidance around classes to mock statically, with a DiffblueBase class, to help avoid Spring context initialization failures. [Ref: TG-22342]

• Cover now writes tests with a MaintainedByDiffblue annotation if the cover-annotations library is available. [Ref: TG-21448]

• Plugin: Cover's Test Review feature now provides a warning if unreviewed tests will be lost when closing the Test Review panel. [Ref: TG-21295]

Resolved Issues

• CLI: Resolved an issue which, in some circumstances, caused Cover to show F009: Internal error while running dcover create --preflight. [Ref: TG-22438]

• Plugin: Resolved an issue in Test Review which, in some circumstances, could cause Cover to report an incorrect number of tests to be reviewed for a class. [Ref: TG-22081]

Known Issues

• Plugin: Cover incorrectly provides a menu option to write tests for a test file. [Ref: TG-17163]

• Cover supports Open JDK and Oracle JDK; results with other JDKs may differ due to the variability in their implementations of Java. [Ref: TG-19345]

• Reports: Cover only counts Java code towards the total line count metrics. Kotlin code is not currently included. [Ref: TG-22088]

• Reports: Total lines of code metric can incorrectly count a multi-line comment at the end of a line of code, resulting in fewer than expected lines counted. [Ref: TG-22089]

• Reports: Following an upgrade, the 'Total Lines of Code' card may show 0 until a new reports bundle has been uploaded. [Ref: TG-22094]

• In some circumstances, Cover may write more simplistic tests with less meaningful assertions when Spring Boot dependency injection is disabled. [Ref: TG-22102]

• In some circumstances, Cover will still write Spring Boot tests when Spring Boot dependency injection is disabled. [Ref: TG-22103]

• Cover may write failing TestNG tests when Spring Boot dependency injection is disabled. [Ref: TG-22107]