crazy-coverage.nvim

A Neovim plugin for displaying code coverage overlays directly in your editor using virtual text and configurable colors.

Features

• Multi-Format Support: LCOV, LLVM JSON, Cobertura XML, GCOV, LLVM Profdata
• Virtual Text Overlay: Display hit counts and branch coverage inline
• Auto-Detection: Automatically detects coverage format from file extension
• Configurable: Customize colors, position, and display options
• Two-Layer Architecture: Decoupled parsers and converters for easy extension

Installation

Using lazy.nvim

{
  "mr-u0b0dy/crazy-coverage.nvim",
  config = function()
    require("crazy-coverage").setup()
  end,
}

Using packer.nvim

use {
  "mr-u0b0dy/crazy-coverage.nvim",
  config = function()
    require("crazy-coverage").setup()
  end,
}

Using vim-plug

Plug "mr-u0b0dy/crazy-coverage.nvim"

Then add to your config:

require("crazy-coverage").setup()

Quick Start

-- Load coverage file (auto-detects format)
:CoverageLoad coverage.lcov

-- Toggle coverage overlay
:CoverageToggle

-- Clear coverage
:CoverageClear

Configuration

require("crazy-coverage").setup({
  virt_text_pos = "eol",           -- "eol", "inline", "overlay", "right_align"
  show_hit_count = true,            -- Show hit counts
  show_branch_summary = false,      -- Show branch coverage as b:taken/total
  auto_load = true,                 -- Auto-load on file open
})

Documentation

• Usage Guide - Commands, configuration, and examples
• Supported Formats - Coverage format details and generation
• Architecture - Plugin design and extension guide
• Development - Testing and contributing

Requirements

• Neovim 0.7+
• Optional: lcov (for GCOV support)
• Optional: llvm-profdata and llvm-cov (for LLVM Profdata support)

License

Apache License 2.0 - See LICENSE file for details.

Copyright © 2025 - mr-u0b0dy

Contributing

See doc/development.md for testing and contribution guidelines.