Add a more thorough spec for init command.

spec/functional/command/init_spec.rb

 require File.expand_path('../../../spec_helper', __FILE__)
 
+require 'xcodeproj'
+
 module Pod
+
   describe Command::Init do
 
-    it "runs with no parameters" do
-      lambda { run_command('init') }.should.not.raise CLAide::Help
+    it "complains if project does not exist" do
+      lambda { run_command('init') }.should.raise CLAide::Help
+      lambda { run_command('init', 'foo.xcodeproj') }.should.raise CLAide::Help
+    end
+
+    it "complains if wrong parameters" do
+      lambda { run_command('too', 'many') }.should.raise CLAide::Help
     end
 
-    it "complains when given parameters" do
-      lambda { run_command('init', 'create') }.should.raise CLAide::Help
-      lambda { run_command('init', '--create') }.should.raise CLAide::Help
-      lambda { run_command('init', 'NAME') }.should.raise CLAide::Help
-      lambda { run_command('init', 'createa') }.should.raise CLAide::Help
-      lambda { run_command('init', 'agument1', '2') }.should.raise CLAide::Help
-      lambda { run_command('init', 'which') }.should.raise CLAide::Help
-      lambda { run_command('init', 'cat') }.should.raise CLAide::Help
-      lambda { run_command('init', 'edit') }.should.raise CLAide::Help
+    it "complains if more than one project exists and none is specified" do
+      pwd = Dir.pwd
+      Dir.chdir(temporary_directory)
+
+      Xcodeproj::Project.new.save_as(temporary_directory + 'test1.xcodeproj')
+      Xcodeproj::Project.new.save_as(temporary_directory + 'test2.xcodeproj')
+      lambda { run_command('init') }.should.raise CLAide::Help
+
+      Dir.chdir(pwd)
     end
 
-    extend SpecHelper::TemporaryRepos
+    it "creates a Podfile for a project in current directory" do
+      pwd = Dir.pwd
+      Dir.chdir(temporary_directory)
 
-    it "creates a Podfile" do
+      Xcodeproj::Project.new.save_as(temporary_directory + 'test1.xcodeproj')
       run_command('init')
-      path = temporary_directory + 'Podfile'
-      File.exists?(path).should == true
+      Pathname.new(temporary_directory + 'Podfile').exist?.should == true
+
+      Dir.chdir(pwd)
+    end
+
+    it "creates a Podfile for a specified project" do
+      pwd = Dir.pwd
+      Dir.chdir(temporary_directory)
+
+      Xcodeproj::Project.new.save_as(temporary_directory + 'test1.xcodeproj')
+      Xcodeproj::Project.new.save_as(temporary_directory + 'test2.xcodeproj')
+      run_command('init', 'test2.xcodeproj')
+      Pathname.new(temporary_directory + 'Podfile').exist?.should == true
+
+      Dir.chdir(pwd)
     end
+
   end
 end