"""

        when:
        result = executer
            .withEnvironmentVars([JDK1: new File("/unknown/env").absolutePath, JDK2: firstJavaHome])
            .withArgument("-Porg.gradle.java.installations.paths=${new File("/unknown/path").absolutePath}," + secondJavaHome)
            .withArgument("-Porg.gradle.java.installations.fromEnv=JDK1,JDK2")
            .withArgument("--info")
            .withTasks("show")
            .run()

        given:
        def jdk1 = temporaryFolder.createDir("11.0.6.hs-adpt")
        def jdk2 = temporaryFolder.createDir("14")
        def jdk3 = temporaryFolder.createDir("java/8.0.262.fx-librca")
        def supplier = createSupplier([jdk1, jdk2, jdk3] as Set)

        when:
        def directories = supplier.get()

        then:

        def jdk7 = new File("/Library/Java/JavaVirtualMachines/jdk1.7.0_17.jdk/Contents/Home")
        def jdk8 = new File("/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home")
        def jdk9 = new File("/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home")
        osxJavaHomeCommand.findJavaHomes() >> [jdk7, jdk8, jdk9]

        when:
        def directories = supplier.get()

            new File("/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home"),
            new File("/Library/Java/JavaVirtualMachines/jdk1.7.0_17.jdk/Contents/Home"),
            new File("/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home"),
            new File("/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home"),
        ])

        '/opt/files/jdk-linux/jdk-8u161-linux-x64.tar.gz/bin/java' | '/opt/files/jdk-linux/jdk-8u161-linux-x64.tar.gz/bin/jstack'
        '/opt/jdk/oracle-jdk-8/bin/java'                           | '/opt/jdk/oracle-jdk-8/bin/jstack'
        '/opt/jdk/oracle-jdk-8/jre/bin/java'                       | '/opt/jdk/oracle-jdk-8/bin/jstack'
    }

    @Requires(UnitTestPreconditions.Windows)

    }

    /**
     * Usage:
     * <pre>
     *     def jdk1 = AvailableJavaHomes.getJvmInstallationMetadata(Jvm.current())
     *     def jdk2 = AvailableJavaHomes.getJvmInstallationMetadata(AvailableJavaHomes.getDifferentVersion(jdk1.languageVersion))
     *
     *     when:
     *     withInstallations(jdk1, jdk2).run(":task")
     * </pre>
     */

        def jvm = new Jvm(os, software.file('jdk/jre'), "1.8.0.221", 8)

        then:
        jvm.javaHome == software.file('jdk')
        jvm.jdk
        jvm.toolsJar == software.file('jdk/lib/tools.jar')
        jvm.javaExecutable == software.file('jdk/bin/java.exe')
        jvm.javacExecutable == software.file('jdk/bin/javac.exe')
        jvm.javadocExecutable == software.file('jdk/bin/javadoc.exe')

        metadata2.errorMessage.contains("No such directory")
    }


    def "invalidation takes predicate into account"() {
        def location1 = testLocation("jdk1")
        def location2 = testLocation("jdk2")
        def metadata1 = Mock(JvmInstallationMetadata)
        def metadata2 = Mock(JvmInstallationMetadata)
        def delegate = Mock(JvmMetadataDetector) {

     | Architecture:       x86_64
     | Is JDK:             true
     | Detected by:        environment variable 'JDK16'

 + Oracle JDK 1.7.0_80
     | Location:           /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre
     | Language Version:   7
     | Vendor:             Oracle
     | Architecture:       x86_64
     | Is JDK:             false
     | Detected by:        MacOS java_home

        def supplier = createSupplier()

        when:
        def locations = supplier.get()

        then:
        locations*.location.path.containsAll("c:\\jdk8", "d:\\jdk9", "c:\\jdk17", "d:\\jdk11", "c:\\jdk15", "d:\\jdk16")
        locations*.source == ["Windows Registry"] * 6
    }

    def "handles absent adoptopenjdk keys"() {
        given: