Refactor actions specs with shared examples

spec/producer/core/action_spec.rb

@@ -2,46 +2,6 @@ require 'spec_helper'
 
 module Producer::Core
   describe Action do
-    let(:input)       { StringIO.new }
-    let(:output)      { StringIO.new }
-    let(:env)         { Env.new(input: input, output: output) }
-    let(:arguments)   { [:some, :arguments] }
-    subject(:action)  { Action.new(env, *arguments) }
-
-    describe '#env' do
-      it 'returns the assigned env' do
-        expect(action.env).to be env
-      end
-    end
-
-    describe '#arguments' do
-      it 'returns the assigned arguments' do
-        expect(action.arguments).to eq arguments
-      end
-    end
-
-    describe '#input' do
-      it 'returns env input' do
-        expect(action.input).to be input
-      end
-    end
-
-    describe '#output' do
-      it 'returns env output' do
-        expect(action.output).to be output
-      end
-    end
-
-    describe '#remote' do
-      it 'returns env remote' do
-        expect(action.remote).to be action.env.remote
-      end
-    end
-
-    describe '#fs' do
-      it 'returns env remote fs' do
-        expect(action.fs).to be action.env.remote.fs
-      end
-    end
+    it_behaves_like 'action'
   end
 end

spec/producer/core/actions/echo_spec.rb

@@ -7,6 +7,8 @@ module Producer::Core
       let(:text)      { 'hello' }
       subject(:echo)  { Echo.new(env, text) }
 
+      it_behaves_like 'action'
+
       describe '#apply' do
         it 'writes the given string to env output with a record separator' do
           echo.apply

spec/producer/core/actions/file_writer_spec.rb

@@ -8,6 +8,8 @@ module Producer::Core
       let(:content)     { 'some_content' }
       subject(:writer)  { FileWriter.new(env, path, content) }
 
+      it_behaves_like 'action'
+
       describe '#apply' do
         it 'writes content to file on remote filesystem' do
           expect(writer.fs).to receive(:file_write).with(path, content)

spec/producer/core/actions/mkdir_spec.rb

@@ -7,6 +7,8 @@ module Producer::Core
       let(:path)      { 'some_path' }
       subject(:mkdir) { Mkdir.new(env, path) }
 
+      it_behaves_like 'action'
+
       describe '#apply' do
         it 'creates directory on remote filesystem' do
           expect(mkdir.fs).to receive(:mkdir).with(path)

spec/producer/core/actions/shell_command_spec.rb

@@ -8,6 +8,8 @@ module Producer::Core
       let(:command)       { "echo #{command_args}" }
       subject(:sh)        { ShellCommand.new(env, command) }
 
+      it_behaves_like 'action'
+
       describe '#apply' do
         it 'executes the remote command' do
           expect(sh.remote).to receive(:execute).with(command)

spec/support/shared_action.rb

@@ -0,0 +1,45 @@
+module Producer::Core
+  shared_examples 'action' do
+    let(:input)       { StringIO.new }
+    let(:output)      { StringIO.new }
+    let(:env)         { Env.new(input: input, output: output) }
+    let(:arguments)   { [:some, :arguments] }
+    subject(:action)  { described_class.new(env, *arguments) }
+
+    describe '#env' do
+      it 'returns the assigned env' do
+        expect(action.env).to be env
+      end
+    end
+
+    describe '#arguments' do
+      it 'returns the assigned arguments' do
+        expect(action.arguments).to eq arguments
+      end
+    end
+
+    describe '#input' do
+      it 'returns env input' do
+        expect(action.input).to be input
+      end
+    end
+
+    describe '#output' do
+      it 'returns env output' do
+        expect(action.output).to be output
+      end
+    end
+
+    describe '#remote' do
+      it 'returns env remote' do
+        expect(action.remote).to be action.env.remote
+      end
+    end
+
+    describe '#fs' do
+      it 'returns env remote fs' do
+        expect(action.fs).to be action.env.remote.fs
+      end
+    end
+  end
+end