2024-12-01

2024-12-01

This release introduces support for IntelliJ IDEA 2024.3 and removes support for 2024.1. It also resolves various issues with the CLI, Plugin and Reports.

Important Notices

Deprecations

• IntelliJ IDEA 2024.1: Support for IntelliJ IDEA 2024.1 ended with Cover 2024.11.02. Starting with Cover 2024.12.01, only IntelliJ IDEA versions 2024.2 and 2024.3 are supported.

Changes to test code

• Test Method Ordering: In an upcoming release, Cover will adjust 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.

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

• Refactor: Diffblue Cover is now able to automatically fix issues with Surefire plugin configuration [Ref: TG-22370]

• Cover now supports Gradle 8.11.x. [Ref: TG-22305]

• Plugin: Cover now displays a progress dialog after clicking 'Accept All' when the Test Review beta feature is enabled, showing the progress of inserting tests into the codebase. [Ref: TG-22244]

• Plugin: Cover now supports IntelliJ IDEA Community Edition 2024.3 and IntelliJ IDEA Ultimate 2024.3. [Ref: TG-21975]

Resolved Issues

• Reports: Resolved an issue which caused performance problems, for some deployments, while loading Telemetry graphs. Graphs are now split across tabs to improve page load times. [Ref: TG-22414]

• CLI: Resolved an issue which, in some circumstances, could cause dcover fix-build or dcover refactor to report FAILURE: Build failed with an exception. on a Gradle project. [Ref: TG-22374]

• CLI: Resolved an issue which caused Cover to report Recipe validation error in [...] while attempting to run dcover fix-build. [Ref: TG-22358]

• Resolved an issue which prevented Cover from writing assertions for methods that statically returned object while returning a boolean at runtime. [Ref: TG-22325]

• Resolved an issue which could cause test validation to fail when a particular combination of Maven plugins were present. [Ref: TG-22299]

• Resolved an issue which, in some circumstances, caused Cover to report F009 (Internal Error) while writing tests for code involving an ObjectMapper and Jackson Databind < 2.2.0. [Ref: TG-22296]

• Resolved an issue which, in some circumstances, for some project configurations, could cause environment checks to report an inaccurate JaCoCo coverage. [Ref: TG-22219]

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]