use the same block diff-coverage-maven-plugin as given in document but get the error

[shubhampanchal21109]

Describe the Issue

• we use the same block diff-coverage-maven-plugin as given in document but get the error

Desktop (complete the following information):

• OS: [Windows 11]
• maven version: [3.0.2, 3.2.5]
• diff-coverage-maven-plugin [0.3.3]
• Java version - 1.8.0

Configuration Of pom.xml

Below I mentioned the configuration of pom.xml.

<plugin>
	<groupId>com.github.surpsg</groupId>
	<artifactId>diff-coverage-maven-plugin</artifactId>
	<version>0.3.0</version>
	<configuration>
		<!-- Required. diff content source. only one of file, URL or Git is allowed -->
		<diffSource>
			<!-- path to diff file -->
			<git>refs/remotes/origin/QA</git> <!-- compares current HEAD and all uncommited with this <git> -->
		</diffSource>
		
		<dataFileIncludes>**/AViewerService/target/*.exec</dataFileIncludes>

		<!-- Optional -->
		<violations> 
			<!-- Default 'false'. Fail build if violation rules weren't met  -->
			<failOnViolation>true</failOnViolation>
			<minLines>0.8</minLines>
			
		</violations>
		
		<!-- Optional. Ant patterns by which we include classes for coverage report. -->
		<!-- Optional. Ant patterns by which we exclude classes from coverage report. -->
		<!-- <excludes>
			<exclude>**/exclude/**/ClassName.class</exclude>
		</excludes> -->
		<!-- If neither <includes> nor <excludes> are specified then we pass all classes for coverage report -->
		
	</configuration>
	<executions>
		<execution>
			<goals>
			<goal>diffCoverage</goal>
			</goals>
		</execution>
	</executions>
</plugin>

Executable Command

mvn clean test diff-coverage:diffCoverage

Errors

It throws an error like this -

Execution default-cli of goal com.github.surpsg:diff-coverage-maven-plugin:0.3.0:diffCoverage failed: An API incompatibility was encountered while executing com.github.surpsg:diff-coverage-maven-plugin:0.3.0:diffCoverage: java.lang.UnsupportedClassVersionError: org/eclipse/jgit/storage/file/FileRepositoryBuilder has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Expected behavior

• It should compute code coverage of new/modified code based on a provided diff

[SurpSG]

Hi @shubhampanchal21109
Seems, you are old java 8.

Diff coverage uses jgit library for generating patch file. Seems, the was compiled with target java version 11.

---

If you have to use java 8 then you can generate patch file and provide it to diff coverage plugin. So you will avoid jgit invocation, so you will be able using the diff coverage plugin