From 6f1d164da6fca26d41d5962c575900dfc792f004 Mon Sep 17 00:00:00 2001
From: Roman Mueller <roman.mueller@gmail.com>
Date: Tue, 22 Sep 2015 18:05:37 +0200
Subject: [PATCH 1/2] Check for numeric values as empty fails on those

---
 lib/puppet/parser/functions/empty.rb | 12 ++++++++----
 spec/functions/empty_spec.rb         |  2 +-
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/lib/puppet/parser/functions/empty.rb b/lib/puppet/parser/functions/empty.rb
index cca620fae..b5a3cdea4 100644
--- a/lib/puppet/parser/functions/empty.rb
+++ b/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
 
diff --git a/spec/functions/empty_spec.rb b/spec/functions/empty_spec.rb
index 94b1c6856..a3a25d6a0 100755
--- a/spec/functions/empty_spec.rb
+++ b/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) }
 

From c7c4d41a8286ab05af65afc1207c8cea4c11ffff Mon Sep 17 00:00:00 2001
From: Helen Campbell <helen@puppetlabs.com>
Date: Mon, 28 Sep 2015 16:18:56 +0100
Subject: [PATCH 2/2] Added acceptance test and updated readme

---
 README.markdown               |  2 +-
 spec/acceptance/empty_spec.rb | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/README.markdown b/README.markdown
index f91932365..d023f2312 100644
--- a/README.markdown
+++ b/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`
 
diff --git a/spec/acceptance/empty_spec.rb b/spec/acceptance/empty_spec.rb
index 8b46aacda..2d4df901b 100755
--- a/spec/acceptance/empty_spec.rb
+++ b/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