Update a named spec repo.

lib/cocoa_pods/command/repo.rb

@@ -13,7 +13,11 @@ module Pod
           unless (@name = argv[1]) && (@url = argv[2])
             raise ArgumentError, "needs a NAME and URL"
           end
-        when 'cd'
+        when 'update'
+          unless @name = argv[1]
+            raise ArgumentError, "needs a NAME"
+          end
+       when 'cd'
           unless @name = argv[1]
             raise ArgumentError, "needs a NAME"
           end
@@ -34,6 +38,10 @@ module Pod
         FileUtils.mkdir_p(repos_dir)
         Dir.chdir(repos_dir) { git("clone #{@url} #{@name}") }
       end
+
+      def update
+        Dir.chdir(File.join(repos_dir, @name)) { git("pull") }
+      end
     end
   end
 end

spec/functional/command_spec.rb

@@ -23,4 +23,23 @@ describe "Pod::Command" do
     command.run
     git_config('private', 'remote.origin.url').should == fixture('master-spec-repo.git')
   end
+
+  it "updates a spec-repo" do
+    repo1 = Pod::Command.parse('repo', 'add', 'repo1', fixture('master-spec-repo.git'))
+    def repo1.repos_dir; SpecHelper.tmp_repos_path; end
+    repo1.run
+
+    repo2 = Pod::Command.parse('repo', 'add', 'repo2', repo1.dir)
+    def repo2.repos_dir; SpecHelper.tmp_repos_path; end
+    repo2.run
+
+    File.open(File.join(repo1.dir, 'README'), 'a') { |f| f << 'updated!' }
+    git('repo1', 'commit -a -m "update"')
+
+    command = Pod::Command.parse('repo', 'update', 'repo2')
+    def command.repos_dir; SpecHelper.tmp_repos_path; end
+    command.run
+
+    File.read(File.join(repo2.dir, 'README')).should.include 'updated!'
+  end
 end