Jacoco doesn't detect unit tests in gradle java project

[Patrik Polaček]

I'm configuring Jacoco(version 0.8.3) unit test reporting for specific module in Gradle(version 6.0.1) project. Currently, I have basic java project structure, where I have in given module src and src/main, src/test repos with core code files and unit tests. 

This is my configuration in specific build.gradle file for given module:

  

   

  apply plugin: 'java'
        apply plugin: 'jacoco'
       
        jacoco {
          toolVersion = "0.8.3"
        }
        jacocoTestReport {
          reports {
            xml.enabled true
            html.enabled true
       
          }
        }
        jacocoTestCoverageVerification {
          violationRules {
            rule {
              limit {
                counter = 'LINE'
                value = 'COVEREDRATIO'
                value = 'COVEREDRATIO'
                minimum = 1.0
              }
            }
          }
        }
        sonarqube {
          properties {
            property "sonar.coverage.jacoco.xmlReportPaths", "build/customJacocoReportDir/test/jacocoTestReport.xml"
            property "sonar.java.binaries", "build/classes/java/main"
            property "sonar.java.test.binaries", "build/classes/java/test"
            property "sonar.sources", "src/main"
            property "sonar.tests", "src/test"
          }
        }

However, after launching jacocoTestReport, xml file with test results is generated but shows 0 unit test coverage, even when I have unit tests covering my classes. Unit test classes are also included in generated index.html file. 

This project has standalone gradle configuration for unit tests, I think problem may be there, I wasn't able to locate it. 

junit-test.gradle file:

    sourceSets.test.output.resourcesDir = file('build/classes/java/test/')
   
    configurations {
      testCompile {
        exclude group: 'junit'
        exclude group: 'org.aspectj'
        exclude group: 'org.hamcrest'
        exclude module: 'jsonassert'
        exclude module: 'jsr305'
      }
    }
   
    dependencies {
      testImplementation(
        // Junit 5
        'org.junit.jupiter:junit-jupiter-api',
        'org.junit.jupiter:junit-jupiter-params',
      )
    testRuntimeOnly(
        'org.junit.jupiter:junit-jupiter-engine',
      )
    }
    tasks.named('compileTestJava').configure {
      options.encoding = 'UTF-8'
      doFirst {
        moduleOptions {
          addReads = [(project.moduleName): 'org.junit.jupiter.api']
        }
      }
    }
    tasks.named('test').configure { Test test ->
    test.useJUnitPlatform {
        includeEngines 'junit-jupiter'
    //    scanForTestClasses false
        include "***/**/*Tests.class"
        include "****/**/*TestFactory.class"
        filter {
          failOnNoMatchingTests false
        }
   
      }
    test.testLogging {
      events "passed", "skipped", "failed"
     exceptionFormat TestExceptionFormat.FULL
    }
    test.reports {
      html.enabled = true
    }
    doFirst {
        moduleOptions {
          addReads = [(project.moduleName): 'org.junit.jupiter.api']
          addOpens = ['java.base/java.lang': 'spring.core']
        }
        def testJvmArgs = [
          '-ea',
          '-Dfile.encoding=utf-8',
          '-Dsun.jnu.encoding=utf-8',
          '-Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager',
          '-Duser.country=**',
          '-Duser.language=**',
          '-Duser.timezone=***,
   
        ]
        configurations.agent.files.each {
          testJvmArgs.add 1, "-javaagent:$it.path"
        }
        test.jvmArgs testJvmArgs
      }
   
    }

Thank you for your help.