Implement `yaml_write' action

features/action_yaml_write.feature

@@ -0,0 +1,14 @@
+@sshd
+Feature: `yaml_write' task action
+
+  Background:
+    Given a recipe with:
+      """
+      task :yaml_write_action do
+        yaml_write 'some_file', data: { foo: 'bar' }
+      end
+     """
+
+  Scenario: writes given data as YAML
+    When I successfully execute the recipe on remote target
+    Then the remote file "some_file" must match /^:foo: bar$/

features/steps/remote_steps.rb

@@ -22,6 +22,10 @@ Then /^the remote file "([^"]+)" must contain exactly "([^"]+)"$/ do |path, cont
   check_exact_file_content path, content
 end
 
+Then /^the remote file "([^"]+)" must match \/([^\/]+)\/$/ do |path, pattern|
+  check_file_content path, /#{pattern}/, true
+end
+
 def stat_mode(path)
   in_current_dir do
     ('%o' % [File::Stat.new(path).mode])[-4, 4]

lib/producer/core.rb

@@ -17,6 +17,7 @@ require 'producer/core/actions/mkdir'
 require 'producer/core/actions/file_append'
 require 'producer/core/actions/file_replace_content'
 require 'producer/core/actions/file_writer'
+require 'producer/core/actions/yaml_writer'
 
 # condition tests
 require 'producer/core/test'

lib/producer/core/actions/file_writer.rb

@@ -3,7 +3,7 @@ module Producer
     module Actions
       class FileWriter < Action
         def setup
-          check_arguments_size! 2
+          check_arguments_size! arguments_size
           @path, @content         = arguments
           @options[:permissions]  = @options.delete :mode if options.key? :mode
           @options[:owner]        = @options.delete :user if options.key? :user
@@ -17,6 +17,13 @@ module Producer
           fs.file_write @path, @content
           fs.setstat @path, @options unless @options.empty?
         end
+
+
+        private
+
+        def arguments_size
+          2
+        end
       end
     end
   end

lib/producer/core/actions/yaml_writer.rb

@@ -0,0 +1,23 @@
+module Producer
+  module Core
+    module Actions
+      class YAMLWriter < FileWriter
+        def setup
+          super
+          @content = options.delete(:data).to_yaml
+        end
+
+        def name
+          'yaml_write'
+        end
+
+
+        private
+
+        def arguments_size
+          1
+        end
+      end
+    end
+  end
+end

lib/producer/core/task.rb

@@ -23,6 +23,7 @@ module Producer
       define_action :file_append,           Actions::FileAppend
       define_action :file_replace_content,  Actions::FileReplaceContent
       define_action :file_write,            Actions::FileWriter
+      define_action :yaml_write,            Actions::YAMLWriter
 
       attr_reader :name, :actions, :condition
 

spec/producer/core/actions/yaml_writer_spec.rb

@@ -0,0 +1,25 @@
+require 'spec_helper'
+
+module Producer::Core
+  module Actions
+    describe YAMLWriter, :env do
+      let(:path)        { 'some_path' }
+      let(:data)        { { foo: 'bar' } }
+      let(:arguments)   { [path] }
+      let(:options)     { { data: data } }
+      subject(:writer)  { described_class.new(env, *arguments, options) }
+
+      it_behaves_like 'action'
+
+      it { is_expected.to be_a FileWriter}
+
+      describe '#apply' do
+        it 'writes data as YAML to file on remote filesystem' do
+          expect(remote_fs)
+            .to receive(:file_write).with(path, data.to_yaml)
+          writer.apply
+        end
+      end
+    end
+  end
+end