From 863d860968baf0920861b35703fadc7706b04a9a Mon Sep 17 00:00:00 2001
From: Juan Ibiapina <juanibiapina@gmail.com>
Date: Thu, 6 Mar 2014 15:04:59 -0300
Subject: [PATCH] Allow introspection of configuration values.

Add a 'keys' method to capistrano/configuration. This method can be used
to introspect on all currently set configuration keys to allow
configuration dumps, for instance.
---
 CHANGELOG.md                              |  3 +++
 lib/capistrano/configuration.rb           |  4 ++++
 spec/lib/capistrano/configuration_spec.rb | 13 +++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d7b277f..924446bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ Reverse Chronological Order:
 
 https://github.com/capistrano/capistrano/compare/v3.2.0...HEAD
 
+* Minor changes:
+  * Added `keys` method to Configuration to allow introspection of configuration options. (@juanibiapina)
+
 ## `3.2.0`
 
 The changelog entries here are incomplete, because many authors choose not to
diff --git a/lib/capistrano/configuration.rb b/lib/capistrano/configuration.rb
index 4b1b6f4c..a5f978e9 100644
--- a/lib/capistrano/configuration.rb
+++ b/lib/capistrano/configuration.rb
@@ -36,6 +36,10 @@ module Capistrano
       return value
     end
 
+    def keys
+      config.keys
+    end
+
     def role(name, hosts, options={})
       if name == :all
         raise ArgumentError.new("#{name} reserved name for role. Please choose another name")
diff --git a/spec/lib/capistrano/configuration_spec.rb b/spec/lib/capistrano/configuration_spec.rb
index 026a53b4..42c37a2d 100644
--- a/spec/lib/capistrano/configuration_spec.rb
+++ b/spec/lib/capistrano/configuration_spec.rb
@@ -112,6 +112,19 @@ module Capistrano
       end
     end
 
+    describe 'keys' do
+      subject { config.keys }
+
+      before do
+        config.set(:key1, :value1)
+        config.set(:key2, :value2)
+      end
+
+      it 'returns all set keys' do
+        expect(subject).to match_array [:key1, :key2]
+      end
+    end
+
     describe 'deleting' do
       before do
         config.set(:key, :value)