Module: SimpleCov::CLI::Serve::ReportPreparer

Defined in:
lib/simplecov/cli/serve/report_preparer.rb

Overview

Ensures the coverage directory has a renderable entry point before the HTTP server binds. Existing self-contained reports take priority over their optional JSON sidecar.

Class Method Summary collapse

Class Method Details

.call(dir) ⇒ Object 



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# File 'lib/simplecov/cli/serve/report_preparer.rb', line 12

def self.call(dir)
  index_path = File.join(dir, "index.html")
  json_path = File.join(dir, "coverage.json")
  return "#{dir} doesn't exist; run your test suite first" unless File.directory?(dir)
  return if File.file?(index_path)

  return "#{dir} has no index.html or coverage.json; run your test suite first" unless File.file?(json_path)

  require_relative "../../formatter/html_formatter"
  SimpleCov::Formatter::HTMLFormatter.new.format_from_json(json_path, dir)
  nil
rescue SimpleCov::CoverageJSON::Error, SystemCallError => e
  "cannot build index.html from #{json_path}: #{e.message}"
end