sanity_check_spec.rb

require 'spec_helper'
require 'pathname'

RSpec.describe "Verify required rspec dependencies" do

  tmp_root = Pathname.new(RSpec::Core::RubyProject.root).join("tmp")

  before{ FileUtils.mkdir_p tmp_root }

  it "fails when libraries are not required" do
    script = tmp_root.join("fail_sanity_check")
    File.open(script, "w") do |f|
      f.write <<-EOF.gsub(/^\s+\|/, '')
        |#!/usr/bin/env ruby
        |RSpec::Support.require_rspec_core "project_initializer"
      EOF
    end
    FileUtils.chmod 0777, script

    Bundler.with_clean_env do
      expect(`bundle exec #{script} 2>&1`).
        to match(/uninitialized constant RSpec::Support/).
        or match(/undefined method `require_rspec_core' for RSpec::Support:Module/)

      expect($?.exitstatus).to eq(1)
    end
  end

  it "passes when libraries are required" do
    script = tmp_root.join("pass_sanity_check")
    File.open(script, "w") do |f|
      f.write <<-EOF.gsub(/^\s+\|/, '')
        |#!/usr/bin/env ruby
        |require 'rspec/core'
        |require 'rspec/support'
        |RSpec::Support.require_rspec_core "project_initializer"
      EOF
    end
    FileUtils.chmod 0777, script

    Bundler.with_clean_env do
      expect(`bundle exec #{script} 2>&1`).to be_empty
      expect($?.exitstatus).to eq(0)
    end
  end

end