Java code coverage tools: Difference between revisions

Revision as of 20:02, 5 August 2024

Revision as of 18:08, 12 July 2025

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JaCoCo offers instructions, line and branch coverage.

In contrast to [[#Clover|Atlassian Clover]] and [[#OpenClover|OpenClover]], which require instrumenting the source code, JaCoCo can instrument [[Java bytecode]] using two different approaches:

* like [[#JCov|JCov]] on the fly while running the code with a Java agent<ref>{{cite web |url=http://onlysoftware.wordpress.com/2012/12/19/code-coverage-tools-jacoco-cobertura-emma-comparison-in-sonar/ |title=Code Coverage Tools (JaCoCo, Cobertura, Emma) Comparison in Sonar|author=Patroklos Papapetrou|date=19 December 2012 |work=Only Software matters |publisher= |accessdate=3 March 2013}}</ref>

* like [[#Cobertura|Cobertura]] and [[#JCov|JCov]] prior to execution (offline)

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JCov is the tool which has been developed and used with Sun JDK (and later Oracle JDK) from the very beginning of Java: from the version 1.1. JCov is capable of measuring and reporting [[Java (programming language)|Java]] [[code coverage]]. JCov is distributed under the terms of the [[GNU General Public License]] (version 2, with the Classpath Exception). JCov has become open-source as a part of [[OpenJDK]] code tools project in 2014.

=== Features ===

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'''Serenity''' is an [[open-source software|open-source]] tool creating better-automated software acceptance tests in less time. It and measures and reports [[Java (programming language)|Java]] [[code coverage]]. It also generates easy-to-understand reports that describe what the application does and how it works, including which tests were run and [https://serenity-bdd.info/what-is-serenity/ what requirements were met]. It works with Selenium WebDriver, Appium, and BDD tools.

Major code metrics such as [[Cyclomatic complexity|cyclometric complexity]], stability, abstractness, and distance from main are measured. The report data is persisted to an [[object database]] and made available via Jenkins/Hudson. The interface visually replicates the Eclipse IDE interface.

Serenity dynamically enhances the byte code, making a post-compile step unnecessary. Ant and Maven projects are supported. Configuration is done in xml, an Ant example would be: