Vim-Legend

This plugin parses coverage files and creates signs in the left gutter to indicate which lines have been hit/missed/ignored.

Currently, vim-legend parses the output of a Ruby gem called cadre, but the intention is to expand the possible coverage files to different coverage systems and languages.

Once it's installed, it will detect coverage files whenever you enter a buffer. You'll see signs on the left of the file indicating what's been tested and what's not. Most of the time, they're easy to ignore and when you need to know what code has been covered and what's not, it's super handy.

Oh, a screenshot:

Vim with Legend	Simplecov HTML output

Installation

You should be able to use your preferred Vim package manager. I for one like Vundle:

Add this to your .vimrc:

Bundle 'killphi/vim-legend'

And then:

:Bundle

Why "legend" ?

In spy jargon, a "legend" is the cover story constructed by and agency for its operatives. So it's a kind of a play on words, you see. A legend is also the list of symbols on a map to describe what they mean. So, it's a tool to guide and protect you while you code.

Adapters

The actual format vim-legend uses is just a Vim script, and pretty simple at that. It's possible to write programs to convert the output of other coverage tools into the vim-legend format. In fact, there's already a program to do this for Go: https://github.com/nyarly/legendary