Fix exception type in option type checker

* lib/shell/system-command.rb (SystemCommand#initialize):
  `def_e2message` wraps error message, but does not define new exception

* test/shell/test_command_processor.rb: add a test

This patch is authored by Kenichi Kamiya <kachick1@gmail.com>
close #1657

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59145 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/shell/system-command.rb

@@ -16,7 +16,7 @@ class Shell
   class SystemCommand < Filter
     def initialize(sh, command, *opts)
       if t = opts.find{|opt| !opt.kind_of?(String) && opt.class}
-        Shell.Fail Error::TypeError, t.class, "String"
+        Shell.Fail TypeError, t.class, "String"
       end
       super(sh)
       @command = command

test/shell/test_command_processor.rb

@@ -66,4 +66,17 @@ class TestShell::CommandProcessor < Test::Unit::TestCase
     Process.waitall
     Dir.rmdir(path)
   end
+
+  def test_option_type
+    name = 'foo'
+    path = File.join(@tmpdir, name)
+
+    open(path, 'w', 0755) {}
+    assert_raise(TypeError) {
+      catch(catch_command_start) {@shell.system(name, 42)}
+    }
+  ensure
+    Process.waitall
+    File.unlink(path)
+  end
 end