registry.getSubkeys(WindowsRegistry.Key.HKEY_LOCAL_MACHINE, "SOFTWARE\\AdoptOpenJDK\\JDK") >> [
            "8.0",
            "9.0-abc"
        ]
        registry.getStringValue(WindowsRegistry.Key.HKEY_LOCAL_MACHINE, "SOFTWARE\\AdoptOpenJDK\\JDK\\8.0\\hotspot\\MSI", "Path") >> "c:\\jdk8"
        registry.getStringValue(WindowsRegistry.Key.HKEY_LOCAL_MACHINE, "SOFTWARE\\AdoptOpenJDK\\JDK\\9.0-abc\\hotspot\\MSI", "Path") >> "d:\\jdk9"

import java.util.regex.Pattern;

public interface JvmVendor {

    enum KnownJvmVendor {
        ADOPTIUM("adoptium", "temurin|adoptium|eclipse foundation", "Eclipse Temurin"),
        ADOPTOPENJDK("adoptopenjdk", "AdoptOpenJDK"),
        AMAZON("amazon", "Amazon Corretto"),
        APPLE("apple", "Apple"),
        AZUL("azul systems", "Azul Zulu"),
        BELLSOFT("bellsoft", "BellSoft Liberica"),

    @Issue("https://github.com/gradle/gradle/issues/17195")
    def "compares installation paths as a last resort"() {
        given:
        def prevJdk = jvmMetadata("8.0.1", true, ADOPTOPENJDK, "/jdks/openjdk-8.0.1")
        def nextJdk = jvmMetadata("8.0.1", true, ADOPTOPENJDK, "/jdks/openjdk-8.0.1.1")
        def metadata = [prevJdk, nextJdk]

        when:
        metadata.sort(new JvmInstallationMetadataComparator(getJavaHome()))

            javac << 'dummy'
        }

        expect:
        assertOutput(metadata, """{identifier} + AdoptOpenJDK 1.8.0-b01{normal}
     | Location:           {description}${javaHome}{normal}
     | Language Version:   {description}8{normal}
     | Vendor:             {description}AdoptOpenJDK{normal}
     | Architecture:       {description}myArch{normal}
     | Is JDK:             {description}true{normal}

    }

    def "change in implementation is a different input"() {
        given:
        def base = new JavaToolchainInput(newSpec(11, "adoptopenjdk", JvmImplementation.VENDOR_SPECIFIC))
        def diff = new JavaToolchainInput(newSpec(11, "adoptopenjdk", JvmImplementation.J9))

        expect:
        base.languageVersion == diff.languageVersion
        base.vendor == diff.vendor
        base.implementation != diff.implementation
    }

     *
     * @since 7.4
     */
    public static final JvmVendorSpec ADOPTIUM = matching(KnownJvmVendor.ADOPTIUM);

    public static final JvmVendorSpec ADOPTOPENJDK = matching(KnownJvmVendor.ADOPTOPENJDK);

    public static final JvmVendorSpec AMAZON = matching(KnownJvmVendor.AMAZON);

    public static final JvmVendorSpec APPLE = matching(KnownJvmVendor.APPLE);

     Note:
      1. Use JDK8 keytool command to make sure compatibility.
      2. Default password for JDK cacerts is "changeit".

     The current trustStore-adoptopenjdk-8 is created from AdoptOpenJDK8 cacerts.
     */

    private TestKeyStore(TestFile rootDir, String keyStoreType = "PKCS12", String trustStoreType = keyStoreType) {
        this.keyStoreType = keyStoreType

== What you’ll need

* A text editor or IDE - for example link:https://www.jetbrains.com/idea/download/[IntelliJ IDEA]
* A Java Development Kit (JDK), version 8 or higher - for example link:https://adoptopenjdk.net/[AdoptOpenJDK]
* The latest https://gradle.org/install[Gradle distribution]
${toolChain.raw}

== Create a project folder

        def metadata = Mock(JvmInstallationMetadata) {
            getVendor() >> JvmVendor.fromString("some unknown")
        }

        when:
        def asPredicate = (Predicate<JvmInstallationMetadata>)JvmVendorSpec.ADOPTOPENJDK

        then:
        !asPredicate.test(metadata)
    }

    def "matches known vendors"() {
        given:
        def metadata = Mock(JvmInstallationMetadata) {

    def "try using a WindowsRegistry on a non-Windows OS"() {
        def service = services.get(WindowsRegistry)
        when:
        service.getSubkeys(WindowsRegistry.Key.HKEY_LOCAL_MACHINE, "SOFTWARE\\AdoptOpenJDK\\JDK")
        then:
        def e = thrown(NativeIntegrationUnavailableException)
        e.message == "Service 'WindowsRegistry' is not available (os=${OperatingSystem.current()}, enabled=true)."
    }