(MODULES-3543) Fixup defined_with_params to work on all puppet versions

lib/puppet/parser/functions/defined_with_params.rb

@@ -26,7 +26,10 @@
   ret = false
   if resource = findresource(reference.to_s)
     matches = params.collect do |key, value|
-      resource[key] == (value.eql?(:undef) ? nil : value)  # eql? avoids bugs caused by monkeypatching in puppet
+      # eql? avoids bugs caused by monkeypatching in puppet
+      resource_is_undef = resource[key].eql?(:undef) || resource[key].nil?
+      value_is_undef = value.eql?(:undef) || value.nil?
+      (resource_is_undef && value_is_undef) || (resource[key] == value)
     end
     ret = params.empty? || !matches.include?(false)
   end

spec/functions/defined_with_params_spec.rb

@@ -26,10 +26,10 @@
 
   describe 'when passing undef values' do
     let :pre_condition do
-      'file { "/tmp/a": }'
+      'file { "/tmp/a": ensure => present }'
     end
 
     it { is_expected.to run.with_params('File[/tmp/a]', {}).and_return(true) }
-    it { is_expected.to run.with_params('File[/tmp/a]', { 'owner' => :undef }).and_return(true) }
+    it { is_expected.to run.with_params('File[/tmp/a]', { 'ensure' => 'present', 'owner' => :undef }).and_return(true) }
   end
 end

spec/functions/ensure_resource_spec.rb

@@ -10,6 +10,32 @@
     is_expected.to run.with_params(1,2,3).and_raise_error(Puppet::ParseError)
   }
 
+  context 'given an empty catalog' do
+    describe 'after running ensure_resource("user", "username1", {})' do
+      before { subject.call(['User', 'username1', {}]) }
+
+      # this lambda is required due to strangeness within rspec-puppet's expectation handling
+      it { expect(lambda { catalogue }).to contain_user('username1').without_ensure }
+    end
+
+    describe 'after running ensure_resource("user", "username1", { gid => undef })' do
+      before { subject.call(['User', 'username1', { 'gid' => :undef }]) }
+
+      # this lambda is required due to strangeness within rspec-puppet's expectation handling
+      it { expect(lambda { catalogue }).to contain_user('username1').without_ensure }
+      it { expect(lambda { catalogue }).to contain_user('username1').without_gid }
+    end
+
+    describe 'after running ensure_resource("user", "username1", { ensure => present, gid => undef })' do
+      before { subject.call(['User', 'username1', { 'ensure' => 'present', 'gid' => :undef }]) }
+
+      # this lambda is required due to strangeness within rspec-puppet's expectation handling
+      it { expect(lambda { catalogue }).to contain_user('username1').with_ensure('present') }
+      it { expect(lambda { catalogue }).to contain_user('username1').without_gid }
+    end
+
+  end
+
   context 'given a catalog with "user { username1: ensure => present }"' do
     let(:pre_condition) { 'user { username1: ensure => present }' }
 
@@ -28,8 +54,8 @@
       it { expect(lambda { catalogue }).to contain_user('username2').without_ensure }
     end
 
-    describe 'after running ensure_resource("user", "username1", { "gid" => undef })' do
-      before { subject.call(['User', 'username1', { "gid" => :undef }]) }
+    describe 'after running ensure_resource("user", "username1", { gid => undef })' do
+      before { subject.call(['User', 'username1', { 'gid' => :undef }]) }
 
       # this lambda is required due to strangeness within rspec-puppet's expectation handling
       it { expect(lambda { catalogue }).to contain_user('username1').with_ensure('present') }