spec_error_handler.rb

# frozen_string_literal: true

require_relative 'helper'
require 'tempfile'
require 'fileutils'

separate_testing do
  require_relative '../lib/rack/error_handler'
  require_relative '../lib/rack/lint'
  require_relative '../lib/rack/mock_request'
end

describe Rack::ErrorHandler do
  it "catches bad requests as 400 Bad Request" do
    error = Class.new(StandardError)
    error.include(Rack::BadRequest)

    app = lambda do |env|
      raise error, "b00m"
    end

    middleware = Rack::Lint.new(Rack::ErrorHandler.new(app))
    response = middleware.call(Rack::MockRequest.env_for("/"))

    response[0].must_equal 400
    response[2].to_ary.must_equal ["Bad Request: #{error}"]
  end

  it "catches standard errors as 500 Internal Server Error" do
    error = Class.new(StandardError)

    app = lambda do |env|
      raise error, "b00m"
    end

    middleware = Rack::Lint.new(Rack::ErrorHandler.new(app))
    response = middleware.call(Rack::MockRequest.env_for("/"))

    response[0].must_equal 500
    response[2].to_ary.must_equal ["Internal Server Error: #{error}"]
  end

  it "logs errors to the rack.errors stream" do
    app = lambda do |env|
      raise "b00m"
    end

    middleware = Rack::Lint.new(Rack::ErrorHandler.new(app))
    errors = StringIO.new
    response = middleware.call(Rack::MockRequest.env_for("/", "rack.errors" => errors))

    errors.string.must_match(/RuntimeError/)
    errors.string.must_match(/b00m/)

    response[0].must_equal 500
    response[2].to_ary.must_equal ["Internal Server Error: RuntimeError"]
  end
end