Add an unmunge capability to type parameters and properties

Unmunge is the reverse of munge.
While munge allows the type to return a different parameter value
or properties should than the one it was created with, unmunge
does the reverse.

It can be used for instance to store a value in a different
representation but still be able to return genuine value to the
outside world.

Signed-off-by: Brice Figureau <brice-puppet@daysofwonder.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/spec/unit/parameter.rb b/spec/unit/parameter.rb
index 94f5cfd7b..42d3103bd 100755
--- a/spec/unit/parameter.rb
+++ b/spec/unit/parameter.rb
@@ -46,6 +46,16 @@ describe Puppet::Parameter do
             @parameter.value.should == "bar"
         end
 
+        it "should unmunge the value when accessing the actual value" do
+            @parameter.class.unmunge do |value| value.to_sym end
+            @parameter.value = "foo"
+            @parameter.value.should == :foo
+        end
+
+        it "should return the actual value by default when unmunging" do
+            @parameter.unmunge("bar").should == "bar"
+        end
+
         it "should return any set value" do
             @parameter.value = "foo"
             @parameter.value.should == "foo"