LogoLogo
diffblue.comFree trial
  • Discover Diffblue Cover
  • Get Started
    • What is Diffblue Cover?
    • Get started
      • Free trial
      • Get started - Cover Plugin
      • Get started - Cover CLI
      • Get started - Cover Pipeline
      • Get started - Cover Reports
    • Specs & Reqs
    • Reference Deployments
    • Licensing
      • Online license activation
      • Offline license activation
      • Diffblue License Manager
    • Update Cover
    • FAQs
    • Diffblue Learning
      • Get started
        • Just the basics
        • Free trial
        • Cover Plugin (IDE)
        • Cover CLI (Command Line)
      • Developer
        • Unit tests (IDE)
        • Unit tests (CLI)
        • Test coverage
      • DevOps
        • GitHub
        • GitLab
        • Other CI
      • Administrator
        • Admin - IntelliJ
        • Admin - CLI
        • Admin - Reports
      • Test coverage
        • Developer
        • Senior developer
        • Cover Reports Administrator
  • EVALUATION & ONBOARDING
    • Proof of Value
    • Jumpstart
      • Prerequisites for onboarding
      • Phase 1: Up and running
        • Module 1: Create your Cover unit test baseline
        • Module 2: Cover Pipeline CI integration
      • Phase 2: Developer productivity
        • Module 3: Getting started using Cover
        • Module 4: Introduction to Cover Reports
      • Phase 3: Advanced topics
        • Module 5: Speed up your test execution
        • Module 6: Getting more from Cover
  • Features
    • Cover Plugin
      • Writing tests
        • Gutter icons
        • Menu options
        • Run configurations
        • Cover Plugin tool window
        • Test Review
        • Test examples
        • Creating partial tests
        • Creating skeleton tests
        • Covering all enum values
        • Test insertion order
        • Diffblue Sandbox
        • Environment Check Cache
      • Project configuration
        • General dependencies
        • Test framework dependencies
      • Cover Plugin settings
        • Test Naming
        • Test Formatting
        • Spring configuration options
        • Method Annotations
        • Test Directory
        • Reset Cover Plugin settings
      • Cover Plugin admin
        • Core Maintenance
        • Cover Plugin toolbar menu
        • Cover Plugin status bar widget
        • Telemetry
        • Memory management
        • Using SonarQube with Cover Plugin
        • Log files
        • Troubleshooting
    • Cover CLI
      • Writing tests
        • Command summary
        • Test examples
        • Creating partial tests
        • Customizing test inputs
        • Customizing test setup
        • Test naming
        • Test formatting
        • Test insertion order
        • Patch files
        • Diffblue Sandbox
        • Operational behaviors
        • Test validation
      • Project configuration
        • Preflight checks
        • General dependencies
        • Test framework dependencies
        • Compiling your project successfully
          • Building a Maven project
          • Building a Gradle project
        • Configuring Cover to work with your project's build system
          • Quick guide
          • Configuration file in detail
          • Getting Started with Ant Projects
          • Default configuration
        • Mocking using Mockito
        • Spring profiles
        • Runtime environment
      • Commands & Arguments
        • Environment configuration for CI
        • Packages, classes, and methods
        • Quoting command line arguments
        • Argument files
      • Cover CLI admin
        • Core Maintenance
        • Telemetry
        • Memory management
        • Using Cover CLI in Eclipse
        • Using SonarQube with Cover CLI
        • Log files
        • Troubleshooting
      • Environment Configuration
    • Cover Pipeline
      • Cover Pipeline for CI
        • Quick Start - General
        • Quick Start - Jenkins
        • Quick Start - Azure Pipelines
        • Quick Start - AWS Codebuild
        • Integrating Diffblue Cover into CI on pull requests
        • Installation - VMs or CI run
      • Cover Pipeline for GitLab
        • Introduction
        • Installation and initial setup
        • GitLab workflow
        • Configuration
        • Troubleshooting
        • Related topics
      • Cover Pipeline for GitHub
        • Introduction
        • Installation and initial setup
        • GitHub workflow
        • Configuration
        • Troubleshooting
        • Related topics
    • Cover Reports
      • Cover Reports Contributor
        • Java project config (JaCoCo)
        • Generate and upload reports bundles
        • Authenticated uploads
      • Cover Reports User
        • Navigation
        • Dashboards
        • Telemetry data
        • Export API
        • Considerations
      • Cover Reports Administrator
        • Install and update Cover Reports
        • Configuration options
        • Database backup
        • SSO with Cover Reports
        • Uninstall Cover Reports
    • Cover Optimize
      • Get started - Cover Optimize
      • Cover Optimize & Gradle
      • Cover Optimize & Maven
      • Patch files
    • Cover Refactor
      • Get started - Cover Refactor
    • Cover Annotations
      • Mocking Annotations
      • Custom Input Annotations
      • Interesting Value Annotations
    • Output Codes
      • E - Environment Codes
      • L - License Codes
      • R - Reason Codes
      • T - Testability Codes
      • V - Validation Codes
      • Working with output codes
        • Working with code E020
        • Working with codes E057 to E065
        • Working with code E085
        • Working with code R005
        • Working with code R006
        • Working with code R008
        • Working with code R011
        • Working with code R012
        • Working with code R013
        • Working with code R026
        • Working with code R031
        • Working with code V003
    • Tutorials
      • How to measure test quality
      • How to improve code coverage
      • How to test a new feature
      • How to find regressions
      • How to use Diffblue Cover in test driven development (TDD)
      • How to write tests for Kotlin projects
      • Examples of tests created by Diffblue Cover
      • Best practices for testing private methods
  • Updates & Upgrades
    • Update Cover
    • Cover Editions
    • What's new
    • Release archive
      • 2025-05-01
      • 2025-04-02
      • 2025-04-01
      • 2025-03-02
      • 2025-03-01
      • 2025-02-02
      • 2025-02-01
      • 2025-01-02
      • 2025-01-01
      • 2024-12-02
      • 2024-12-01
      • 2024-11-02
      • 2024-11-01
      • 2024-10-02
      • 2024-10-01
      • 2024-09-02
      • 2024-09-01
      • 2024-08-02
      • 2024-08-01
      • 2024-07-04
      • 2024-07-03
      • 2024-07-01
      • 2024-06-02
      • 2024-06-01
      • 2024-05-02
      • 2024-05-01
      • 2024-04-02
      • 2024-04-01
      • 2024-03-02
      • 2024-03-01
      • 2024-02-02
      • 2024-02-01
      • 2024-01-02
      • 2024-01-01
      • 2023-12-02
      • 2023-12-01
      • 2023-11-03
      • 2023-11-02
      • 2023-11-01
      • 2023-10-02
      • 2023-10-01
      • 2023-09-02
      • 2023-09-01
      • 2023-08-02
      • 2023-08-01
      • 2023-07-03
      • 2023-07-02
      • 2023-07-01
      • 2023-06-02
      • 2023-06-01
      • 2023-05-02
      • 2023-05-01
      • 2023-04-02
      • 2023-04-01
      • 2023-03-02
      • 2023-03-01
      • 2023-02-02
      • 2023-02-01
      • 2023-01-02
      • 2023-01-01
      • 2022-12-02
      • 2022-12-01
      • 2022-11-02
      • 2022-11-01
      • 2022-10-03
      • 2022-10-02
      • 2022-10-01
      • 2022-09-02
      • 2022-09-01
      • 2022-08-05
      • 2022-08-03
      • 2022-08-02
      • 2022-08-01
      • 2022-07-02
      • 2022-07-01
      • 2022-06-02
      • 2022-06-01
      • 2022-05-02
      • 2022-05-01
      • 2022-04-02
      • 2022-04-01
      • 2022-03-02
      • 2022-03-01
      • 2022-02-02
      • 2022-02-01
      • 2022-01-02
      • 2022-01-01
      • 2021-06-02
      • 2021-02-01
  • Legal
    • Diffblue Legal
      • Diffblue End User License Agreement (EULA)
      • Cover Third Party Notices and/or Licenses
      • Privacy Notice
Powered by GitBook
On this page
  • Results of ongoing efforts to speed up test writing with our IntelliJ
  • Removal of on-disk index writing
  • Streamlined console output
  • Full what's new information available from within the IntelliJ plug-in
  • Meet the Diffblue team at Devoxx in October
  • Developer Edition trial available
  • How do I automatically maintain all of these tests?
  • Enhancements
  • Resolved Issues

Was this helpful?

Export as PDF
  1. Updates & Upgrades
  2. Release archive

2022-09-02

Previous2022-10-01Next2022-09-01

Last updated 1 year ago

Was this helpful?

Results of ongoing efforts to speed up test writing with our IntelliJ

Plug-in

We are delighted to report the results of our ongoing efforts to accelerate the writing of tests. Thanks to incremental improvements over the last few releases, Cover today completes the 'write tests' stage 50% faster (on average against our internal benchmarks). Allowing our customers to write tests even faster.

{: width="250" height="128"}

Removal of on-disk index writing

In our constant quest for speed, we have optimized away the need for producing an on-disk index when writing tests. This results in a further time saving on test writing equivalent to 1 second per module.

Streamlined console output

Harnessing the enhanced log file functionality released previously (in 2022.09.01) we have taken the opportunity to reduce the amount of non-actionable information reported in the CLI console and tool panel. This results in clearer, more targeted output allowing users to produce tests even more efficiently.

Full information continues to be written to the support log files should detailed analysis be required.

Full what's new information available from within the IntelliJ plug-in

Convenient access to the full 'What's New' and release notes has been added to the IntelliJ plug-in menu, allowing you to keep informed of new features and enhancements as we continue to add them.

{: width="162" height="203"}

Meet the Diffblue team at Devoxx in October

Developer Edition trial available

How do I automatically maintain all of these tests?

Enhancements

  • Cover now writes tests for Spring Controller methods with @RequestBody Map<> arguments. [Ref: TG-17068]

  • CLI: Cover's deprecated dcover clean --failing subcommand has been removed and dcover validate should be used instead. [Ref: TG-17790]

  • CLI: Cover now provides a 'duration' at the end of execution. Timestamp prefixes have been removed from console output. [Ref: TG-17714]

  • IntelliJ Plugin: Cover now shows 'what's new' updates in an IDE tab rather than a window overlay. [Ref: TG-17653]

Resolved Issues

  • Resolved an issue which, in some circumstances, caused Cover to report R013 while writing tests for methods which inherit annotations. [Ref: TG-17686]

  • Resolved an issue which prevented Cover creating Map implementation inputs that meet constraints outside of the class under test. [Ref: TG-17212]

Diffblue are delighted to be sponsoring {: target="_blank" rel="noopener"} Our team can't wait to talk about AI for Code with the Java development community.

We are delighted to now offer a 14-day trial version of our Developer Edition, which includes the Diffblue Cover CLI, as part of our new licensing option. We're really excited that you can now "try before you buy"! To download your trial of Diffblue Cover Developer Edition, please . Full information on all our options is also available .

Use Diffblue Cover on any CI platform to automatically update your unit tests and catch regressions for every commit - watch to learn more.

Devoxx Belgium 2022.
click here
here
this video