diff --git a/.travis.yml b/.travis.yml
index d608004..7f33973 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,17 @@
 osx_image: xcode10.1
 language: objective-c
 cache: bundler
+
 before_install:
 - bundle install
 - bundle exec pod repo update --silent
+
+env:
+- TASK=rubocop
+- TASK="rake spec:unit"
+- TASK="rake spec:integration"
+- TASK="rake spec:command"
+
 script:
-- bundle exec rake spec
-- bundle exec rubocop
+- bundle exec $TASK
+
diff --git a/Rakefile b/Rakefile
index 68cc78d..e793293 100644
--- a/Rakefile
+++ b/Rakefile
@@ -4,9 +4,26 @@ def specs(dir)
   FileList["spec/#{dir}/*_spec.rb"].shuffle.join(' ')
 end
 
-desc 'Runs all the specs'
-task :spec do
-  sh "bundle exec bacon #{specs('**')}"
+namespace :spec do
+  desc 'Runs the unit specs'
+  task :unit do
+    sh "bundle exec bacon #{specs('unit/**')}"
+  end
+
+  desc 'Runs the integration specs'
+  task :integration do
+    sh "bundle exec bacon #{specs('integration/**')}"
+  end
+
+  desc 'Runs the command specs'
+  task :command do
+    sh "bundle exec bacon #{specs('command/**')}"
+  end
+
+  desc 'Runs all the specs'
+  task :all do
+    sh "bundle exec bacon #{specs('**')}"
+  end
 end
 
-task :default => :spec
+task :default => 'spec:all'
diff --git a/lib/cocoapods-packager/builder.rb b/lib/cocoapods-packager/builder.rb
index be54325..009d94c 100755
--- a/lib/cocoapods-packager/builder.rb
+++ b/lib/cocoapods-packager/builder.rb
@@ -223,8 +223,8 @@ module * { export * }
 
     def copy_license
       license_file = @spec.license[:file] || 'LICENSE'
-      license_file = "#{@static_sandbox_root}/#{@spec.name}/#{license_file}"
-      `cp "#{license_file}" .` if Pathname(license_file).exist?
+      license_file = Pathname.new("#{@static_sandbox_root}/#{@spec.name}/#{license_file}")
+      FileUtils.cp(license_file, '.') if license_file.exist?
     end
 
     def copy_resources
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 46d25ff..af30eb8 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -54,6 +54,10 @@ def self.fixture(name)
     Fixture.fixture(name)
   end
 
+  def self.temporary_directory
+    ROOT + 'tmp'
+  end
+
   module Fixture
     ROOT = Pathname('fixtures').expand_path(__dir__)
 
@@ -67,5 +71,9 @@ def fixture(name)
 module Bacon
   class Context
     include SpecHelper::Fixture
+
+    def temporary_directory
+      SpecHelper.temporary_directory
+    end
   end
 end
diff --git a/spec/pod/utils_spec.rb b/spec/unit/pod/utils_spec.rb
similarity index 97%
rename from spec/pod/utils_spec.rb
rename to spec/unit/pod/utils_spec.rb
index da1bdfd..1a4057b 100644
--- a/spec/pod/utils_spec.rb
+++ b/spec/unit/pod/utils_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../spec_helper', __FILE__)
+require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   describe Command::Package do
diff --git a/spec/specification/builder_spec.rb b/spec/unit/specification/builder_spec.rb
similarity index 67%
rename from spec/specification/builder_spec.rb
rename to spec/unit/specification/builder_spec.rb
index b4002cb..6f91b84 100644
--- a/spec/specification/builder_spec.rb
+++ b/spec/unit/specification/builder_spec.rb
@@ -1,7 +1,26 @@
-require File.expand_path('../../spec_helper', __FILE__)
+require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   describe Builder do
+    describe 'In general' do
+      before do
+        @spec = Specification.from_file('spec/fixtures/Builder.podspec')
+        @static_sandbox_dir = temporary_directory + 'Pods'
+        @installer = stub('Installer', :pod_targets => [])
+        @builder = Builder.new(Platform.new(:ios), @installer, nil, @static_sandbox_dir, nil, nil, @spec, nil, nil, nil, nil, nil, nil)
+      end
+
+      it 'copies the license file if it exists' do
+        path = @static_sandbox_dir + 'Builder/LICENSE.md'
+        path.dirname.mkpath
+        File.open(path, 'w') { |f| f.puts 'Permission is granted...' }
+        @spec.stubs(:license).returns({ :file => 'LICENSE.md'})
+        FileUtils.expects(:cp).with(path, '.')
+        @builder.send(:copy_license)
+        FileUtils.rm_rf(path.dirname)
+      end
+    end
+
     describe 'Xcodebuild command' do
       describe 'compiler flags' do
         before do
diff --git a/spec/specification/spec_builder_spec.rb b/spec/unit/specification/spec_builder_spec.rb
similarity index 97%
rename from spec/specification/spec_builder_spec.rb
rename to spec/unit/specification/spec_builder_spec.rb
index bd4d8fb..b61b59f 100644
--- a/spec/specification/spec_builder_spec.rb
+++ b/spec/unit/specification/spec_builder_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../spec_helper', __FILE__)
+require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   describe SpecBuilder do
diff --git a/spec/user_interface/build_failed_report_spec.rb b/spec/unit/user_interface/build_failed_report_spec.rb
similarity index 80%
rename from spec/user_interface/build_failed_report_spec.rb
rename to spec/unit/user_interface/build_failed_report_spec.rb
index 22f852b..cd38fc0 100644
--- a/spec/user_interface/build_failed_report_spec.rb
+++ b/spec/unit/user_interface/build_failed_report_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../spec_helper', __FILE__)
+require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   module UserInterface