Property<JvmVendorSpec> vendorProperty = Mock(Property.class)
        vendorProperty.get() >> JvmVendorSpec.IBM

        JavaToolchainSpec spec = Mock(JavaToolchainSpec)
        spec.getLanguageVersion() >> javaLanguageVersionProperty
        spec.getImplementation() >> implementationProperty
        spec.getVendor() >> vendorProperty
        spec.getDisplayName() >> "mock spec"
        spec

        }
        return vars;
    }

    public boolean isIbmJvm() {
        for (String vendorProperty : VENDOR_PROPERTIES) {
            if (System.getProperties().containsKey(vendorProperty)
                && System.getProperty(vendorProperty).toLowerCase(Locale.ROOT).startsWith("ibm corporation")) {
                return true;
            }
        }
        return false;
    }

        jvm.is(current)
    }

    def "uses system property to determine if IBM JVM"() {
        when:
        System.properties[vendorProperty] = 'IBM Corporation'
        def jvm = Jvm.current()

        then:
        jvm.isIbmJvm()

        where:
        vendorProperty << ['java.vendor', 'java.vm.vendor']
    }

    def "finds executable for java home supplied"() {