From c7295fb9774713b5d39df818664241db678140c3 Mon Sep 17 00:00:00 2001
From: Thibault Jouan <tj@a13.fr>
Date: Sun, 28 Jul 2013 18:38:00 +0000
Subject: [PATCH] Implement source keyword feature for recipes

---
 features/recipe.feature           | 13 +++++++++++++
 lib/producer/core/recipe.rb       |  7 +++++++
 spec/fixtures/recipes/error.rb    |  1 +
 spec/producer/core/recipe_spec.rb |  9 +++++++++
 4 files changed, 30 insertions(+)
 create mode 100644 spec/fixtures/recipes/error.rb

diff --git a/features/recipe.feature b/features/recipe.feature
index 8984e54..b8e85e6 100644
--- a/features/recipe.feature
+++ b/features/recipe.feature
@@ -8,3 +8,16 @@ Feature: recipe evaluation
     When I execute the recipe
     Then the exit status must be 0
     And the output must contain "hello from recipe"
+
+  Scenario: source keyword, requires a recipe file
+    Given a recipe with:
+      """
+      source 'sourced_recipe'
+      """
+    And a file named "sourced_recipe.rb" with:
+      """
+      puts 'sourced recipe'
+      """
+    When I execute the recipe
+    Then the exit status must be 0
+    And the output must contain "sourced recipe"
diff --git a/lib/producer/core/recipe.rb b/lib/producer/core/recipe.rb
index beb49f0..ea37846 100644
--- a/lib/producer/core/recipe.rb
+++ b/lib/producer/core/recipe.rb
@@ -24,6 +24,13 @@ module Producer
             instance_eval &block
           end
         end
+
+
+        private
+
+        def source(filepath)
+          instance_eval File.read("./#{filepath}.rb")
+        end
       end
     end
   end
diff --git a/spec/fixtures/recipes/error.rb b/spec/fixtures/recipes/error.rb
new file mode 100644
index 0000000..1c3b23b
--- /dev/null
+++ b/spec/fixtures/recipes/error.rb
@@ -0,0 +1 @@
+raise 'error from recipe'
diff --git a/spec/producer/core/recipe_spec.rb b/spec/producer/core/recipe_spec.rb
index 533a0dc..d31b00c 100644
--- a/spec/producer/core/recipe_spec.rb
+++ b/spec/producer/core/recipe_spec.rb
@@ -45,6 +45,15 @@ module Producer::Core
           expect { dsl }.to raise_error(RuntimeError, 'error from recipe')
         end
       end
+
+      describe '#source' do
+        let(:code)  { "source '#{fixture_path_for 'recipes/error'}'" }
+        let(:dsl)   { Recipe::DSL.new code }
+
+        it 'evaluates its code' do
+          expect { dsl }.to raise_error(RuntimeError, 'error from recipe')
+        end
+      end
     end
   end
 end