buildFile << """
            apply plugin: 'java-test-fixtures'

            version = '1.0'
        """
        dumpCompileAndRuntimeTestClasspath()
        addPersonDomainClass()
        addPersonTestFixture()
        addPersonTestUsingTestFixtures()

        when:
        succeeds 'compileTestJava'

        then:
        def skippedJars = getSkippedJars(compileClasspathPackaging)

        """

        file("sub/build.gradle") << """
            plugins {
                id 'java-library'
                id 'java-test-fixtures'
            }
        """

        addPersonDomainClass("sub", "java")
        addPersonTestFixture("sub", "java")

        buildFile.text = """
            plugins {
                id("org.gradle.java-test-fixtures")

            }
        """
        buildFile << """
            dependencies {
                testImplementation(testFixtures(project(":sub")))
            }
        """
        addPersonDomainClass("sub", "groovy")
        addPersonTestFixture("sub", "groovy")
        // the test will live in the current project, instead of "sub"
        // which demonstrates that the test fixtures are exposed

                    assertEquals("John", anyone.getFirstName());
                    assertEquals("Doe", anyone.getLastName());
                }
            }
        """
    }

    protected TestFile addPersonDomainClass(String subproject = "", String lang = 'java') {
        file("${subproject ? "${subproject}/" : ""}src/main/$lang/org/Person.$lang") << """
            package org;

            public class Person {