TestTableShell is broken

Error: test_append_should_work_with_value(Hbase::TableSimpleMethodsTest): ArgumentError: wrong number of arguments (3 for 1)
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/hbase/table.rb:291:in `_append_internal'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands/append.rb:45:in `append'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:49:in `block in command_safe'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:122:in `translate_hbase_exceptions'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:49:in `command_safe'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell.rb:148:in `internal_command'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/hbase/table.rb:51:in `block in add_command'
src/test/ruby/hbase/table_test.rb:186:in `block in test_append_should_work_with_value'
     183:     end
     184: 
     185:     define_test "append should work with value" do
  => 186:       @test_table.append("123", 'x:cnt2', '123')
     187:       assert_equal("123123", @test_table._append_internal("123", 'x:cnt2', '123'))
     188:     end
     189: 

Error: test_append_should_work_without_qualifier(Hbase::TableSimpleMethodsTest): ArgumentError: wrong number of arguments (3 for 1)
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/hbase/table.rb:291:in `_append_internal'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands/append.rb:45:in `append'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:49:in `block in command_safe'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:122:in `translate_hbase_exceptions'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell/commands.rb:49:in `command_safe'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/shell.rb:148:in `internal_command'
/home/zhangduo/hbase/code/hbase-shell/src/main/ruby/hbase/table.rb:51:in `block in add_command'
src/test/ruby/hbase/table_test.rb:191:in `block in test_append_should_work_without_qualifier'
     188:     end
     189: 
     190:     define_test 'append should work without qualifier' do
  => 191:       @test_table.append('1001', 'x', '123')
     192:       assert_equal('123321', @test_table._append_internal('1001', 'x', '321'))
     193:     end
     194: