* lib/rubygems/installer.rb (Gem::Installer#initialize): fixed

typos.

* test/rubygems/test_gem.rb (test_self_dir): removed false
  assertions.

* test/rubygems/test_gem.rb (test_self_set_paths): checks if paths
  are included.

* test/rubygems/test_gem_commands_install_command.rb
  (test_execute_remote): checks diagnostic message too.

* test/rubygems/test_gem_installer.rb (load): uses Gem.ruby.

* test/rubygems/gemutilities.rb (Gem.ruby): initializes from the
  environment variable to run without installation.

* test/rubygems/gemutilities.rb (RubyGemTestCase#util_build_gem):
  creates cache directory.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21736 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rubygems/test_gem_commands_install_command.rb

@@ -112,9 +112,18 @@ class TestGemCommandsInstallCommand < RubyGemTestCase
 
     @cmd.options[:args] = [@a2.name]
 
+    err = ""
+    class << err
+      alias write <<
+    end
     use_ui @ui do
       e = assert_raises Gem::SystemExitException do
-        @cmd.execute
+        stderr, $stderr = $stderr, err
+        begin
+          @cmd.execute
+        ensure
+          $stderr = stderr
+        end
       end
       assert_equal 0, e.exit_code
     end
@@ -127,6 +136,7 @@ class TestGemCommandsInstallCommand < RubyGemTestCase
     assert_equal "Installing RDoc documentation for #{@a2.full_name}...",
                  out.shift
     assert out.empty?, out.inspect
+    assert_match /^Updating class cache with \d+ classes/, err
   end
 
   def test_execute_two