From b91a31335a87e59153a18c2a58b1f3332ea517aa Mon Sep 17 00:00:00 2001
From: Holger Just <hello@holgerjust.de>
Date: Thu, 2 Feb 2017 21:49:07 +0100
Subject: [PATCH] Add empty? predicate to Fields::Array

---
 lib/rackstash/fields/array.rb       |  4 ++++
 lib/rackstash/fields/hash.rb        |  4 ++++
 spec/rackstash/fields/array_spec.rb | 10 ++++++++++
 spec/rackstash/fields/hash_spec.rb  | 10 ++++++++++
 4 files changed, 28 insertions(+)

diff --git a/lib/rackstash/fields/array.rb b/lib/rackstash/fields/array.rb
index cf1743c..750226b 100644
--- a/lib/rackstash/fields/array.rb
+++ b/lib/rackstash/fields/array.rb
@@ -39,6 +39,10 @@ module Rackstash
         self
       end
 
+      def empty?
+        @raw.empty?
+      end
+
       def length
         @raw.length
       end
diff --git a/lib/rackstash/fields/hash.rb b/lib/rackstash/fields/hash.rb
index d5ccda7..5706fa2 100644
--- a/lib/rackstash/fields/hash.rb
+++ b/lib/rackstash/fields/hash.rb
@@ -45,6 +45,10 @@ module Rackstash
         self
       end
 
+      def empty?
+        @raw.empty?
+      end
+
       def keys
         @raw.keys
       end
diff --git a/spec/rackstash/fields/array_spec.rb b/spec/rackstash/fields/array_spec.rb
index bb2afd7..4f3dafb 100644
--- a/spec/rackstash/fields/array_spec.rb
+++ b/spec/rackstash/fields/array_spec.rb
@@ -123,6 +123,16 @@ describe Rackstash::Fields::Array do
     end
   end
 
+  describe '#empty?' do
+    it 'returns true of there are any tags' do
+      expect(array.empty?).to be true
+      array[0] = 'foo'
+      expect(array.empty?).to be false
+      array.clear
+      expect(array.empty?).to be true
+    end
+  end
+
   describe '#length' do
     it 'returns the length of the array' do
       expect(array.length).to eql 0
diff --git a/spec/rackstash/fields/hash_spec.rb b/spec/rackstash/fields/hash_spec.rb
index e755ea5..4989faa 100644
--- a/spec/rackstash/fields/hash_spec.rb
+++ b/spec/rackstash/fields/hash_spec.rb
@@ -160,6 +160,16 @@ describe Rackstash::Fields::Hash do
     end
   end
 
+  describe '#empty?' do
+    it 'returns true of there are any fields' do
+      expect(hash.empty?).to be true
+      hash['key'] = 'foo'
+      expect(hash.empty?).to be false
+      hash.clear
+      expect(hash.empty?).to be true
+    end
+  end
+
   describe '#forbidden_key?' do
     let(:forbidden_keys) { ['forbidden', :foo] }