given:
        def supplier = useProperty ? createSupplier(mavenHome.getCanonicalPath(), null) : createSupplier(null, userHome)

        when:
        def directories = supplier.get()

        then:
        directories.isEmpty()

        where:
        useProperty << [true, false]
    }

    def "supplies no installations empty toolchains file"(boolean useProperty) {
        given:

                .append(parameter.getName())
                .append('\'');

        if (parameter.getExpression() != null) {
            String userProperty = parameter.getExpression().replace("${", "'").replace('}', '\'');
            stringBuilder.append(" (user property ").append(userProperty).append(")");
        }

        stringBuilder.append(" ").append(getParameterLogReason(parameter));

        return stringBuilder.toString();