- it { is_expected.to run.with_params(value, value).and_return(value) }
- it { is_expected.to run.with_params(:undef, value).and_return(value) }
- it { is_expected.to run.with_params(:undefined, value).and_return(value) }
- it { is_expected.to run.with_params(nil, value).and_return(value) }
+ it { is_expected.to run.with_params(value, value).and_return(mapped_value(value)) }
+ it { is_expected.to run.with_params(:undef, value).and_return(mapped_value(value)) }
+ it { is_expected.to run.with_params(:undefined, value).and_return(mapped_value(value)) }
+ it { is_expected.to run.with_params(nil, value).and_return(mapped_value(value)) }
+ end
+ end
+
+ if Puppet::Util::Package.versioncmp(Puppet.version, '6.0.0') < 0 ||
+ Puppet::Util::Package.versioncmp(Puppet.version, '5.5.7') == 0
+ def mapped_value(v)
+ v
+ end
+ else
+ def mapped_value(v)
+ # Puppet 6.0.0 will always map arguments the same way as the Puppet Language
+ # even if function is called from Ruby via call_function
+ # The 3x function API expects nil and :undef to be represented as empty string
+ (v.nil? || v == :undef) ? '' : v