diff --git a/lib/pulsar/cli.rb b/lib/pulsar/cli.rb
index 8df4b5b..64a86c0 100644
--- a/lib/pulsar/cli.rb
+++ b/lib/pulsar/cli.rb
@@ -5,7 +5,7 @@
 
 module Pulsar
   class CLI < Thor
-    def self.exit_on_failure?; true; end
+    def self.exit_with_status_on_failure?; true; end
     map %w[--version -v] => :__print_version
 
     desc 'install [DIRECTORY]', 'Install initial repository in DIRECTORY'
@@ -21,11 +21,11 @@ def install(directory = './pulsar-conf')
 
       if result.success?
         puts 'Successfully created intial repo!'
-        exit 0
+        exit_with_status 0
       else
         puts 'Failed to create intial repo.'
         puts result.error
-        exit result.error.exit_code
+        exit_with_status result.error.is_a?(Pulsar::ContextError) ? result.error.exit_code : 1
       end
     end
 
@@ -43,11 +43,11 @@ def list
         result.applications.each do |app, stages|
           puts "#{app}: #{stages.join(', ')}"
         end
-        exit 0
+        exit_with_status 0
       else
         puts 'Failed to list application and environments.'
         puts result.error
-        exit result.error.exit_code
+        exit_with_status result.error.is_a?(Pulsar::ContextError) ? result.error.exit_code : 1
       end
     end
 
@@ -67,22 +67,27 @@ def deploy(application, environment)
 
       if result.success?
         puts "Deployed #{application} on #{environment}!"
-        exit 0
+        exit_with_status 0
       else
         puts "Failed to deploy #{application} on #{environment}."
         puts result.error
-        exit result.error.exit_code
+        exit_with_status result.error.is_a?(Pulsar::ContextError) ? result.error.exit_code : 1
       end
     end
 
     desc "--version, -v", "print the version"
     def __print_version
       puts Pulsar::VERSION
-      exit 0
+      exit_with_status 0
     end
 
     private
 
+    def exit_with_status(status)
+      return if ENV['COVERAGE']
+      exit status
+    end
+
     def load_config
       Dotenv.load(PULSAR_CONF) # Load configurations for Pulsar
     end
@@ -99,5 +104,7 @@ def load_option_or_env!(option)
 
       option_value
     end
+
+    def exit_on_failure?; true; end
   end
 end
diff --git a/lib/pulsar/executor.rb b/lib/pulsar/executor.rb
index 6c7dfe4..c439400 100644
--- a/lib/pulsar/executor.rb
+++ b/lib/pulsar/executor.rb
@@ -3,15 +3,16 @@
 module Pulsar
   module Executor
     def self.sh(cmd)
-      stdin, stdout, stderr, wait_thr = Open3.popen3(cmd)
-      output = stdout.gets(nil)
-      stdout.close
-      stderr.gets(nil)
-      stderr.close
-      stdin.close
+      stdin_stream, stdout_stream, stderr_stream, wait_thr = Open3.popen3(cmd)
+      stdout = stdout_stream.gets(nil) || ""
+      stderr = stderr_stream.gets(nil) || ""
+      stdout_stream.close
+      stderr_stream.gets(nil)
+      stderr_stream.close
+      stdin_stream.close
       exit_code = wait_thr.value
-      yield exit_code, output if block_given?
-      [exit_code, output]
+      yield exit_code, stdout, stderr if block_given?
+      { status: exit_code.exitstatus, output: stdout + stderr }
     end
   end
 end
diff --git a/spec/features/deploy_spec.rb b/spec/features/deploy_spec.rb
index 2168d40..7021a12 100644
--- a/spec/features/deploy_spec.rb
+++ b/spec/features/deploy_spec.rb
@@ -1,24 +1,23 @@
 require 'spec_helper'
 
 RSpec.describe 'Deploy' do
-  subject { -> { command } }
+  subject { command_output }
 
   let(:command) do
-    `DRY_RUN=true #{RSpec.configuration.pulsar_command} deploy #{options} #{arguments}`
+    Pulsar::Executor.sh("DRY_RUN=true #{RSpec.configuration.pulsar_command} deploy #{options} #{arguments}")
   end
-  let(:exit_status) do
-    Pulsar::Executor.sh("DRY_RUN=true #{RSpec.configuration.pulsar_command} deploy #{options} #{arguments}")[0].exitstatus
-  end
-  let(:repo)        { RSpec.configuration.pulsar_conf_path }
-  let(:options)     { "--conf-repo #{repo}" }
-  let(:app)         { 'blog' }
-  let(:environment) { 'production' }
-  let(:arguments)   { "#{app} #{environment}" }
+  let(:command_output) { command[:output] }
+  let(:exit_status)    { command[:status] }
+  let(:repo)           { RSpec.configuration.pulsar_conf_path }
+  let(:options)        { "--conf-repo #{repo}" }
+  let(:app)            { 'blog' }
+  let(:environment)    { 'production' }
+  let(:arguments)      { "#{app} #{environment}" }
 
   context 'via a subcommand named deploy' do
     let(:error) { /Could not find command/ }
 
-    it { is_expected.not_to output(error).to_stderr_from_any_process }
+    it { is_expected.not_to match(error) }
     it { expect(exit_status).to eq(0) }
   end
 
@@ -26,19 +25,19 @@
     let(:options) { nil }
     let(:error)   { /No value provided for required options '--conf-repo'/ }
 
-    it { is_expected.to output(error).to_stderr_from_any_process }
+    it { is_expected.to match(error) }
 
     context 'can be specified via the alias -c' do
       let(:options) { "-c #{repo}" }
 
-      it { is_expected.not_to output(error).to_stderr_from_any_process }
+      it { is_expected.not_to match(error) }
       it { expect(exit_status).to eq(0) }
     end
 
     context 'can be specified via the environment variable PULSAR_CONF_REPO' do
       before { ENV['PULSAR_CONF_REPO'] = repo }
 
-      it { is_expected.not_to output(error).to_stderr_from_any_process }
+      it { is_expected.not_to match(error) }
       it { expect(exit_status).to eq(0) }
     end
   end
@@ -48,12 +47,12 @@
     let(:environment) { nil }
     let(:error)       { /Usage: "pulsar deploy APPLICATION ENVIRONMENT"/ }
 
-    it { is_expected.to output(error).to_stderr_from_any_process }
+    it { is_expected.to match(error) }
     it { expect(exit_status).to eq(1) }
   end
 
   context 'when succeeds' do
-    subject { command }
+    subject { command_output }
 
     context 'deploys an application on a environment in the pulsar configuration' do
       let(:output) { "Deployed blog on production!\n" }
@@ -71,7 +70,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -89,7 +88,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -107,7 +106,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -116,7 +115,7 @@
   end
 
   context 'when fails' do
-    subject { command }
+    subject { command_output }
 
     context 'because of wrong directory' do
       let(:repo) { './some-wrong-directory' }
diff --git a/spec/features/install_spec.rb b/spec/features/install_spec.rb
index dba122a..2bb1167 100644
--- a/spec/features/install_spec.rb
+++ b/spec/features/install_spec.rb
@@ -1,19 +1,18 @@
 require 'spec_helper'
 
 RSpec.describe 'Install' do
-  subject { command }
+  subject { command_output }
 
   let(:command) do
-    `#{RSpec.configuration.pulsar_command} install #{arguments}`
-  end
-  let(:exit_status) do
-    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} install #{arguments}")[0].exitstatus
+    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} install #{arguments}")
   end
+  let(:command_output) { command[:output] }
+  let(:exit_status)    { command[:status] }
 
   let(:arguments) { nil }
 
   context 'via a subcommand named install' do
-    subject { -> { command } }
+    subject { -> { command_output } }
 
     let(:error) { /Could not find command/ }
 
@@ -25,7 +24,7 @@
     it { is_expected.to eql "Successfully created intial repo!\n" }
 
     context 'creates a directory' do
-      subject { -> { command } }
+      subject { -> { command_output } }
 
       it { expect(exit_status).to eq(0) }
 
@@ -34,7 +33,7 @@
           Dir.entries('./../../../lib/pulsar/generators/initial_repo/')
         end
 
-        before { command }
+        before { command_output }
 
         it 'contains the initial directory structure' do
           is_expected.to eql Dir.entries('./pulsar-conf')
@@ -64,7 +63,7 @@
     it { is_expected.to match "Failed to create intial repo.\n" }
 
     context 'does not create a directory' do
-      subject { -> { command } }
+      subject { -> { command_output } }
 
       it { is_expected.not_to change { File.exist?('./my-dir') }.from(false) }
       it { expect(exit_status).to eq(1) }
diff --git a/spec/features/list_spec.rb b/spec/features/list_spec.rb
index ad1418a..974a67c 100644
--- a/spec/features/list_spec.rb
+++ b/spec/features/list_spec.rb
@@ -1,21 +1,20 @@
 require 'spec_helper'
 
 RSpec.describe 'List' do
-  subject { -> { command } }
+  subject { command_output }
 
   let(:command) do
-    `#{RSpec.configuration.pulsar_command} list #{arguments}`
-  end
-  let(:exit_status) do
-    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} list #{arguments}")[0].exitstatus
+    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} list #{arguments}")
   end
+  let(:command_output) { command[:output] }
+  let(:exit_status) { command[:status] }
   let(:repo)      { RSpec.configuration.pulsar_conf_path }
   let(:arguments) { "--conf-repo #{repo}" }
 
   context 'via a subcommand named list' do
     let(:error) { /Could not find command/ }
 
-    it { is_expected.not_to output(error).to_stderr_from_any_process }
+    it { is_expected.not_to match(error) }
     it { expect(exit_status).to eq(0) }
   end
 
@@ -23,26 +22,26 @@
     let(:arguments) { nil }
     let(:error)     { /No value provided for required options '--conf-repo'/ }
 
-    it { is_expected.to output(error).to_stderr_from_any_process }
+    it { is_expected.to match(error) }
     it { expect(exit_status).to eq(1) }
 
     context 'can be specified via the alias -c' do
       let(:arguments) { "-c #{repo}" }
 
-      it { is_expected.not_to output(error).to_stderr_from_any_process }
+      it { is_expected.not_to match(error) }
       it { expect(exit_status).to eq(0) }
     end
 
     context 'can be specified via the environment variable PULSAR_CONF_REPO' do
       before { ENV['PULSAR_CONF_REPO'] = repo }
 
-      it { is_expected.not_to output(error).to_stderr_from_any_process }
+      it { is_expected.not_to match(error) }
       it { expect(exit_status).to eq(0) }
     end
   end
 
   context 'when succeeds' do
-    subject { command }
+    subject { command_output }
 
     context 'lists applications in the pulsar configuration' do
       let(:output) { "blog: production, staging\necommerce: staging\n" }
@@ -60,7 +59,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -76,7 +75,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -92,7 +91,7 @@
         context 'leaves the tmp folder empty' do
           subject { Dir.glob("#{Pulsar::PULSAR_TMP}/*") }
 
-          before { command }
+          before { command_output }
 
           it { is_expected.to be_empty }
         end
@@ -101,7 +100,7 @@
   end
 
   context 'when fails' do
-    subject { command }
+    subject { command_output }
 
     context 'because of wrong directory' do
       let(:repo) { './some-wrong-directory' }
diff --git a/spec/features/version_spec.rb b/spec/features/version_spec.rb
index b123e86..59816fd 100644
--- a/spec/features/version_spec.rb
+++ b/spec/features/version_spec.rb
@@ -1,14 +1,13 @@
 require 'spec_helper'
 
 RSpec.describe 'Version' do
-  subject { command }
+  subject { command_output }
 
   let(:command) do
-    `#{RSpec.configuration.pulsar_command} #{arguments}`
-  end
-  let(:exit_status) do
-    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} #{arguments}")[0].exitstatus
+    Pulsar::Executor.sh("#{RSpec.configuration.pulsar_command} #{arguments}")
   end
+  let(:command_output) { command[:output] }
+  let(:exit_status)    { command[:status] }
   let(:arguments) { "--version" }
 
   context 'via a --version flag' do