added gemsync scenarios, caught a few gemsync bugs in the process

features/gemsync_command.feature

@@ -0,0 +1,19 @@
+Feature: gemsync command
+  In order to test code against specific ruby implementations
+  A developer
+  Wants an interface to the program
+  So that he can tag versions that pik is aware of
+
+  Scenario: sync to previous version
+    Given I only have the rake gem installed to version 1.9.1.
+    When I run "pik 191 mi" and "pik gemsync 186 mi -q -d",
+    Then I should see "** Syncing"
+    And I should find "Gem rake.+ already installed"
+    And I should see "Installing hoe"
+
+  Scenario: attempt to sync to different platform
+    When I run "pik Ir 91" and "pik gemsync 186 mi -q -d",
+    Then I should see "You appear to be attempting a gemsync from a different platform."
+
+
+  # Scenaorio: sync remotely 

features/step_definitions/pik_commands.rb

@@ -7,6 +7,17 @@
   @ver.size.should eql(1)
 end
 
+Given /^I only have the rake gem installed to version 1\.9\.1\.$/ do
+  x = `pik 191 & gem list`.split("\n").map{|gem_| gem_.split(' ') }
+  x.map! do |name, version|
+    unless name == 'rake'
+      `pik 191 & gem unin #{name} -x -I`
+      name
+    end
+  end
+  x.should_not include('rake')
+end
+
 Given /^I am currently using it\.$/ do
   unless `ruby -v` =~ @version_reg
     k,v = `pik switch #{@version} & path`.split('=')

lib/pik/commands/gemsync_command.rb

@@ -47,7 +47,8 @@ def install_gems(current, source)
             puts "** Gem #{file.basename('.gem')} already installed"
           else
             puts "** Installing #{file.basename('.gem')}"
-            cmd = "#{Which::Gem.exe} install -q --no-rdoc --no-ri #{gem_file(file)}"
+            gem_opts = "install -q --no-rdoc --no-ri"
+            cmd = "#{Which::Gem.exe.basename} #{gem_opts} #{gem_file(file)}"
             puts cmd if debug
             system(cmd)
           end
@@ -59,9 +60,10 @@ def gem_file(file)
       if remote
         gem_re = /(.+)\-(\d+\.\d+\.\d+).+/
         file, gem_name, version = file.basename.to_s.match(gem_re).to_a
-        "#{gem_name} --version \"=#{version}\""
+        "#{gem_name} --version \"=#{version}\" --remote"
       else
-        file
+        # deal with spaces in path
+        file.sub(/.*\s.*/m, '"\&"')
       end
     end