Datasheet
Diffblue Cover is an automated unit test-writing tool. It analyses your existing Java application and writes unit tests that reflect the current behavior, increasing test coverage and helping you find regressions in future code changes. Diffblue Cover automatically maintains the tests by updating them when your code changes. It supports standard Java 8, 11 and 17, Spring and Spring Boot.
Diffblue Cover is available as Diffblue Cover CLI and the Diffblue Cover plugin for IntelliJ.
Below is a feature comparison:
- Operating Systems
- Hardware Requirements
- IntelliJ Versions
- Java Versions
- Spring Versions
- Build Tools
- Test Frameworks
- Mock Frameworks
- Code Coverage Library
- Coverage Measurement
- Creating Tests - Scope
- Incremental test updating
- Reporting
- Dashboard
- Installation
- Telemetry
Operating Systems
| CLI | IntelliJ Plugin | |
|---|---|---|
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Windows 10 Enterprise
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Ubuntu 18.04
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RHEL 7.7
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macOS 10.15
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Hardware Requirements
| CLI | IntelliJ Plugin | |
|---|---|---|
|
Minimum RAM
|
16 GB | 16 GB |
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Minimum disk space
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5 GB | 5 GB |
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Cores
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4 | 4 |
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TCP connection
Cover requires the use of an analysis service that communicates with the plugin and CLI via TCP connections on localhost. In particular, Cover must be able to start up the analysis service, and open a TCP connection from the frontend to the service, and from the service to the frontend.
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IntelliJ Versions
We support the latest and the previous version, currently IntelliJ 2022.3 and IntelliJ 2022.2.
| CLI | IntelliJ Plugin | |
|---|---|---|
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IntelliJ Community 2022.3
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IntelliJ Ultimate 2022.3
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IntelliJ Community 2022.2
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IntelliJ Ultimate 2022.2
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Java Versions
| CLI | IntelliJ Plugin | |
|---|---|---|
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Open JDK, Oracle JDK 8 (version 161+), 11 (but please note that Java 11.0.7 is NOT supported) and 17. Only 64 bit versions of Java are supported.
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Spring Versions
| CLI | IntelliJ Plugin | |
|---|---|---|
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Spring Boot 1.3.3 to 2.7.x, Spring Core 4.1.1 to 5.3.x for Java 8
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Spring Boot 2.1.0 to 2.7.x, Spring Core 5.1.0 to 5.3.x for Java 11
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Spring Boot 2.4.0 to 2.7.x, Spring Core 5.3.x for Java 17
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Build Tools
| CLI | IntelliJ Plugin | |
|---|---|---|
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Maven 3.2.5+, Gradle 4.9+ (must be compatible with your version of Java).
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Test Frameworks
| CLI | IntelliJ Plugin | |
|---|---|---|
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JUnit 4.7 - 4.13, JUnit 5.0 - 5.9.2
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Mock Frameworks
| CLI | IntelliJ Plugin | |
|---|---|---|
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Mockito 1.9.5 - 4.11.0 for Java 8
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Mockito 2.22.0 - 4.11.0 for Java 11
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Mockito 4.1.0 - 4.11.0 forJava 17
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Code Coverage Library
| CLI | IntelliJ Plugin | |
|---|---|---|
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JaCoCo 0.8.3 +
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Coverage Measurement
| CLI | IntelliJ Plugin | |
|---|---|---|
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Externally via JaCoCo, SonarQube etc.
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Creating Tests - Scope
| CLI | IntelliJ Plugin | |
|---|---|---|
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Per method
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Per class
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Per package
This feature is not available for the IntelliJ Plugin Community Edition
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Per module
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Exclude methods from analysis
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Incremental test updating
| CLI | IntelliJ Plugin | |
|---|---|---|
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Use git diff patch file to update tests (https://git-scm.com/docs/git-diff).
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Reporting
| CLI | IntelliJ Plugin | |
|---|---|---|
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Export detailed JSON report
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Dashboard
| CLI | IntelliJ Plugin | |
|---|---|---|
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Web based dashboard
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Installation
| CLI | IntelliJ Plugin | |
|---|---|---|
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Zip bundle
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Via JetBrains marketplace or customised install bundle
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Telemetry
| CLI | IntelliJ Plugin | |
|---|---|---|
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Anonymous usage data sent to Diffblue (can be turned off). For details, please see our Privacy Notice.
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