Jacoco multimodule setup - error resolving external dependencies

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1

I have a multi module setup for jacoco. When running the report task an error is shown indicating that external dependencies can’t be resolved

Execution failed for task ':codeCoverageReport'.
> Could not resolve all files for configuration ':jacocoAnt'.
   > Cannot resolve external dependency org.jacoco:org.jacoco.ant:0.8.5 because no repositories are defined.
     Required by:
         project :

The build.gradle is as follows

buildscript {
    repositories {
        maven {
            url "https://plugins.gradle.org/m2/"
        }
        mavenCentral()
    }
}

plugins {
    id 'java-library'
    id 'groovy'
    id 'org.unbroken-dome.test-sets' version '2.2.1' apply false
    id 'org.sonarqube' version '2.8' apply false
    id 'jacoco'
}

ext {
    groovyMinorVersion = '2.5'
    groovyVersion = "${groovyMinorVersion}.8"
    spockVersion = "1.3-groovy-${groovyMinorVersion}"
}

subprojects {
    apply plugin: 'java'
    apply plugin: 'groovy'
    apply plugin: 'org.unbroken-dome.test-sets'

    repositories {
        mavenCentral()
    }

    task compileClasses() {
        dependsOn classes
        dependsOn testClasses
    }

    testSets {
        if (file('src/componentTest').exists()) {
            componentTest
            compileClasses.dependsOn componentTestClasses
            check.dependsOn tasks.componentTest
        }
        if (file('src/integrationTest').exists()) {
            integrationTest
            compileClasses.dependsOn integrationTestClasses
            check.dependsOn tasks.integrationTest
        }
    }

    dependencies {
        testImplementation "org.codehaus.groovy:groovy:${groovyVersion}"
        testImplementation "org.spockframework:spock-core:${spockVersion}"
    }
}


subprojects {
    apply plugin: 'jacoco'
    jacoco {
        toolVersion = "0.8.6"
    }
}

tasks.register("codeCoverageReport", JacocoReport) {
    // If a subproject applies the 'jacoco' plugin, add the result it to the report

    subprojects { subproject ->
        subproject.plugins.withType(JacocoPlugin).configureEach {
            subproject.tasks.matching({ t -> t.extensions.findByType(JacocoTaskExtension) }).configureEach { testTask ->
                sourceSets subproject.sourceSets.main
                executionData(testTask)
            }

            // To automatically run `test` every time `./gradlew codeCoverageReport` is called,
            // you may want to set up a task dependency between them as shown below.
            // Note that this requires the `test` tasks to be resolved eagerly (see `forEach`) which
            // may have a negative effect on the configuration time of your build.
            subproject.tasks.matching({ t -> t.extensions.findByType(JacocoTaskExtension) }).forEach {
                rootProject.tasks.codeCoverageReport.dependsOn(it)
            }
        }
    }

    // enable the different report types (html, xml, csv)
    reports {
        // xml is usually used to integrate code coverage with
        // other tools like SonarQube, Coveralls or Codecov
        xml.enabled true

        // HTML reports can be used to see code coverage
        // without any external tools
        html.enabled true
    }
}

The part that does the report task setup is from Reporting code coverage with JaCoCo Sample. I’m using Gradle 6.4!

2

You are not defining any repositories (besides build script repositories which are for resolving build script dependencies, not production dependencies)
Besides that there is a gradlePluginPortal() helper.