Implement `file_write' action

spec/producer/core/actions/file_writer_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+module Producer::Core
+  describe Actions::FileWriter do
+    let(:env)           { Env.new }
+    let(:path)          { 'some_path' }
+    let(:content)       { 'some_content' }
+    subject(:writer)    { Actions::FileWriter.new(env, path, content) }
+
+    describe '#apply' do
+      it 'delegates the call to env.remote.fs.file_write method' do
+        expect(env.remote.fs).to receive(:file_write).with(path, content)
+        writer.apply
+      end
+    end
+
+    describe '#path' do
+      it 'returns the path' do
+        expect(writer.path).to eq path
+      end
+    end
+
+    describe '#content' do
+      it 'returns the content' do
+        expect(writer.content).to eq content
+      end
+    end
+  end
+end