2025-03-02
Last updated
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Last updated
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This release of Cover focuses on enhanced reporting capabilities, improved test generation logic, and usability enhancements to the plugin and CLI.
Reports API: Cover Reports now features a REST API for accessing coverage data, enabling integration with existing tools. See the for more details.
Jersey Support: Cover now supports writing tests for code which uses the Jersey RESTful Web Services library, expanding test generation capabilities to a wider range of applications.
Test Generation Logic: Cover now includes tests created without dependency injection when they demonstrably increase code coverage. It also prioritizes constructor usage over setters for more natural test code.
Plugin UI: Cover now features a redesigned tool panel for the test preparation phase. The updated interface provides clearer insights into preparation steps, including error detection and licensing checks.
As of the 2025.03.02 release, the following authentication options have been marked as deprecated:
reports.requiredusername
reports.requiredpassword
Migrating to the new authentication parameters is required to avoid disruption to reporting pipelines. Use reports.users.upload.username and reports.users.upload.password instead.
Reports: Cover Reports now uses reports.users.upload.username & reports.users.upload.password for upload authentication. Existing reports.requiredusername & reports.requiredpassword will be removed in a future release. [Ref: TG-22917]
CLI: Cover now logs details when @InTestsMock and similar mocking advice is applied or cannot be applied. Logs include reasons such as missing frameworks or incompatible class types. [Ref: TG-22846]
CLI: Cover’s test generation process now includes tests created without dependency injection. These tests are added only when they demonstrably increase code coverage compared to dependency injection-based tests. [Ref: TG-22842]
Plugin: Diffblue Cover now includes an 'Activate License' option in the Status Bar widget and on the 'Diffblue Cover License' details screen. This provides easier access to change license keys. [Ref: TG-22841]
Cover now supports Mockito 5.16.0. [Ref: TG-22836]
Plugin: Diffblue Cover now features a redesigned tool panel for the test preparation phase. The updated interface provides clearer insights into preparation steps, including error detection and licensing checks. [Ref: TG-22776]
Reports: Cover Reports now features a REST API for accessing coverage data. System administrators can leverage this API to integrate Reports with existing tools. [Ref: TG-22699]
CLI: Cover now removes MaintainedByDiffblue tests failing validation. Previously, only tests in DiffblueTest classes could be removed during validation. Now failing tagged tests in classes that match the --class-name-template will also be removed. [Ref: TG-22604]
Cover now supports writing tests for code which uses the Jersey RESTful Web Services library. [Ref: TG-22322]
CLI & Plugin: Cover now prioritizes constructor usage over setters when generating tests. This results in more natural and representative test code. [Ref: TG-18736]
Resolved an issue which, in some circumstances, caused Cover to write tests with when() Mockito stubs which were never used. [Ref: TG-22852]
Resolved an issue which, in some circumstances, caused Cover to report Cover Annotations as 'Not Detected' during environment checks. [Ref: TG-22840]
Reports: Resolved an issue which, in some circumstances, could have caused an inconsistent Diffblue test count due to unexpected surefire report files. [Ref: TG-22740]
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]
When using Gradle, Junit 5 tests produced with the @DisplayName annotation may cause all the Diffblue tests to be removed from the class in validation [Ref: TG-22784]
Plugin: On some displays, the Test Review subsection title "Tests for review" can be malformed. [Ref: TG-22805]
Cover does not currently support Java 24. Please switch your JDK version to 21 or lower. [Ref: TG-22920]