[Spec Command::Update] Reuse Podfile setup

spec/functional/command/update_spec.rb

@@ -2,8 +2,6 @@ require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   describe Command::Update do
-    extend SpecHelper::TemporaryRepos
-
     it 'tells the user that no Podfile was found in the project dir' do
       exception = lambda { run_command('update', '--no-repo-update') }.should.raise Informative
       exception.message.should.include "No `Podfile' found in the project directory."
@@ -23,28 +21,26 @@ module Pod
       end
     end
 
-    it 'tells the user that no Lockfile was found in the project dir' do
+    describe 'with Podfile' do
+      extend SpecHelper::TemporaryRepos
+
+      before do
         file = temporary_directory + 'Podfile'
         File.open(file, 'w') do |f|
           f.puts('platform :ios')
-        f.puts('pod "Reachability"')
+          f.puts('pod "BananaLib", "1.0"')
         end
-      Dir.chdir(temporary_directory) do
-        exception = lambda { run_command('update', 'Reachability', '--no-repo-update') }.should.raise Informative
-        exception.message.should.include "No `Podfile.lock' found in the project directory"
       end
+
+      it 'tells the user that no Lockfile was found in the project dir' do
+        exception = lambda { run_command('update', 'BananaLib', '--no-repo-update') }.should.raise Informative
+        exception.message.should.include "No `Podfile.lock' found in the project directory"
       end
 
       describe 'tells the user that the Pods cannot be updated unless they are installed' do
         extend SpecHelper::TemporaryRepos
 
         before do
-        file = temporary_directory + 'Podfile'
-        File.open(file, 'w') do |f|
-          f.puts('platform :ios')
-          f.puts('pod "BananaLib", "1.0"')
-        end
-
           podfile = Podfile.new do
             platform :ios
             pod 'BananaLib', '1.0'
@@ -60,16 +56,13 @@ module Pod
         end
 
         it 'for a single missing Pod' do
-        Dir.chdir(temporary_directory) do
           should.raise Informative do
             run_command('update', 'Reachability', '--no-repo-update')
           end.message.should.include 'The `Reachability` Pod is not ' \
             'installed and cannot be updated'
         end
-      end
 
         it 'for multiple missing Pods' do
-        Dir.chdir(temporary_directory) do
           exception = lambda { run_command('update', 'Reachability', 'BananaLib2', '--no-repo-update') }.should.raise Informative
           exception.message.should.include 'Pods `Reachability`, `BananaLib2` are not installed and cannot be updated'
         end