adding support for hash in the size function

Author: gcmalloc

README.markdown

@@ -578,7 +578,7 @@ Randomizes the order of a string or array elements. *Type*: rvalue.
 
 #### `size`
 
-Returns the number of elements in a string or an array. *Type*: rvalue.
+Returns the number of elements in a string, an array or a hash. *Type*: rvalue.
 
 #### `sort`
 

lib/puppet/parser/functions/size.rb

@@ -6,7 +6,7 @@
 
 module Puppet::Parser::Functions
   newfunction(:size, :type => :rvalue, :doc => <<-EOS
-Returns the number of elements in a string or array.
+Returns the number of elements in a string, an array or a hash
     EOS
   ) do |arguments|
 
@@ -29,14 +29,16 @@ module Puppet::Parser::Functions
         Float(item)
 
         raise(Puppet::ParseError, 'size(): Requires either ' +
-          'string or array to work with')
+          'string, array or hash to work with')
 
       rescue ArgumentError
         result = item.size
       end
 
     elsif item.is_a?(Array)
       result = item.size
+    elsif item.is_a?(Hash)
+      result = item.size
     else
       raise(Puppet::ParseError, 'size(): Unknown type given')
     end

spec/functions/size_spec.rb

@@ -8,15 +8,18 @@
     is_expected.to run.with_params([], 'extra').and_raise_error(Puppet::ParseError, /wrong number of arguments/i)
   }
   it { is_expected.to run.with_params(1).and_raise_error(Puppet::ParseError, /Unknown type given/) }
-  it { is_expected.to run.with_params({}).and_raise_error(Puppet::ParseError, /Unknown type given/) }
   it { is_expected.to run.with_params(true).and_raise_error(Puppet::ParseError, /Unknown type given/) }
-  it { is_expected.to run.with_params('1').and_raise_error(Puppet::ParseError, /Requires either string or array to work/) }
-  it { is_expected.to run.with_params('1.0').and_raise_error(Puppet::ParseError, /Requires either string or array to work/) }
+  it { is_expected.to run.with_params('1').and_raise_error(Puppet::ParseError, /Requires either string, array or hash to work/) }
+  it { is_expected.to run.with_params('1.0').and_raise_error(Puppet::ParseError, /Requires either string, array or hash to work/) }
   it { is_expected.to run.with_params([]).and_return(0) }
   it { is_expected.to run.with_params(['a']).and_return(1) }
   it { is_expected.to run.with_params(['one', 'two', 'three']).and_return(3) }
   it { is_expected.to run.with_params(['one', 'two', 'three', 'four']).and_return(4) }
 
+  it { is_expected.to run.with_params({}).and_return(0) }
+  it { is_expected.to run.with_params({'1' => '2'}).and_return(1) }
+  it { is_expected.to run.with_params({'1' => '2', '4' => '4'}).and_return(2) }
+
   it { is_expected.to run.with_params('').and_return(0) }
   it { is_expected.to run.with_params('a').and_return(1) }
   it { is_expected.to run.with_params('abc').and_return(3) }