Merge pull request #533 from HelenCampbell/MODULES-2614-Improved

Modules 2614 improved numeric value handling on empty function

Author: DavidS

README.markdown

@@ -224,7 +224,7 @@ Converts the case of a string or of all strings in an array to lowercase. *Type*
 
 #### `empty`
 
-Returns true if the argument is an array or hash that contains no elements, or an empty string. *Type*: rvalue.
+Returns true if the argument is an array or hash that contains no elements, or an empty string. Returns false when the argument is a numerical value. *Type*: rvalue.
 
 #### `ensure_packages`
 

lib/puppet/parser/functions/empty.rb

@@ -13,14 +13,18 @@ module Puppet::Parser::Functions
 
     value = arguments[0]
 
-    unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String)
+    unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String) || value.is_a?(Numeric)
       raise(Puppet::ParseError, 'empty(): Requires either ' +
-        'array, hash or string to work with')
+        'array, hash, string or integer to work with')
     end
 
-    result = value.empty?
+    if value.is_a?(Numeric)
+      return false
+    else
+      result = value.empty?
 
-    return result
+      return result
+    end
   end
 end
 

spec/acceptance/empty_spec.rb

@@ -27,6 +27,20 @@
       }
       EOS
 
+      apply_manifest(pp, :catch_failures => true) do |r|
+        expect(r.stdout).to match(/Notice: output correct/)
+      end
+    end
+    it 'handles numerical values' do
+      pp = <<-EOS
+      $a = 7
+      $b = false
+      $o = empty($a)
+      if $o == $b {
+        notify { 'output correct': }
+      }
+      EOS
+
       apply_manifest(pp, :catch_failures => true) do |r|
         expect(r.stdout).to match(/Notice: output correct/)
       end

spec/functions/empty_spec.rb

@@ -3,11 +3,11 @@
 describe 'empty' do
   it { is_expected.not_to eq(nil) }
   it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError) }
-  it { is_expected.to run.with_params(0).and_raise_error(Puppet::ParseError) }
   it {
     pending("Current implementation ignores parameters after the first.")
     is_expected.to run.with_params('one', 'two').and_raise_error(Puppet::ParseError)
   }
+  it { is_expected.to run.with_params(0).and_return(false) }
   it { is_expected.to run.with_params('').and_return(true) }
   it { is_expected.to run.with_params('one').and_return(false) }