do not mangle path in Generic's to_s by stripping leading slashes

Leading slashes are actually valid and mean exactly the same as they would
for a local path. Leading slash == absolute path, no leading slash ==
relative path.

:/foo => actual path /foo on the remote
:foo => foo relative to PWD on remote (i.e. usually ~)

so, by default :foo = :/~/foo = :/home/user/foo (unless the server has
a different home or PWD assigned anyway)

Author: hsitter

lib/uri/ssh_git/generic.rb

@@ -6,14 +6,13 @@ class Generic < ::URI::Generic
       #   Generic.build(
       #     userinfo: 'git',
       #     host: 'github.com',
-      #     path: '/packsaddle/ruby-uri-ssh_git.git'
+      #     path: 'packsaddle/ruby-uri-ssh_git.git'
       #   ).to_s
       #   #=> 'git@github.com:packsaddle/ruby-uri-ssh_git.git'
       #
       # @return [String] git repository url via ssh protocol
       def to_s
-        show_path = path.slice(1..-1) if path.start_with?('/')
-        "#{user}@#{host}:#{show_path}"
+        "#{user}@#{host}:#{path}"
       end
     end
   end

test/test_generic.rb

@@ -8,14 +8,30 @@ class TestGeneric < Test::Unit::TestCase
           params = {
             userinfo: 'git',
             host: 'github.com',
-            path: '/packsaddle/ruby-uri-ssh_git.git'
+            path: 'packsaddle/ruby-uri-ssh_git.git'
           }
           uri = 'git@github.com:packsaddle/ruby-uri-ssh_git.git'
           assert do
             Generic.build(params).to_s == uri
           end
         end
       end
+
+      sub_test_case 'leading slash' do
+        # Leading slashes must be preserved as they denote aboslute paths
+        # while an absence denotes relative paths.
+        test '#to_s' do
+          params = {
+            userinfo: 'git',
+            host: 'github.com',
+            path: '/packsaddle/ruby-uri-ssh_git.git'
+          }
+          uri = 'git@github.com:/packsaddle/ruby-uri-ssh_git.git'
+          assert do
+            Generic.build(params).to_s == uri
+          end
+        end
+      end
     end
   end
 end