Turbux is designed to speed up your TDD cycle by using a single key mapping to run the most relevant test based on the current file in vim. It uses tmux's scriptability to send commands to a chosen pane in your tmux session, by way of tslime.vim.
For more information, see the documentation.
This plugin depends on tslime.vim or vimux, whichever is available, and becomes really awesome when used with rails.vim. It also makes the assumption that you're using tmux.
Note: Due to a bug in the original tslime.vim plugin, please use my fork.
Use tpope's pathogen.