describe('cp.highlight', function()
  local highlight = require('cp.highlight')

  describe('parse_diff_line', function()
    it('parses added text markers {+text+}')
    it('removes removed text markers [-text-]')
    it('handles mixed add/remove markers')
    it('calculates correct highlight positions')
    it('handles text without markers')
    it('handles empty text')
  end)

  describe('parse_git_diff', function()
    it('skips git diff headers')
    it('processes added lines')
    it('ignores removed lines')
    it('handles unchanged lines')
    it('sets correct line numbers')
    it('handles empty diff output')
  end)

  describe('apply_highlights', function()
    it('clears existing highlights')
    it('applies extmarks with correct positions')
    it('uses correct highlight groups')
    it('handles empty highlights')
  end)

  describe('create_namespace', function()
    it('creates unique namespace')
  end)

  describe('parse_and_apply_diff', function()
    it('parses diff and applies to buffer')
    it('sets buffer content')
    it('applies highlights')
    it('returns content lines')
  end)
end)