Remove warning capture; more trouble than worth

.rubocop_todo.yml

@@ -98,7 +98,6 @@ Style/EachWithObject:
 Style/GuardClause:
   Exclude:
     - 'lib/active_model/serializer.rb'
-    - 'test/capture_warnings.rb'
 
 # Offense count: 12
 # Cop supports --auto-correct.

.travis.yml

@@ -16,7 +16,7 @@ cache:
     - vendor/bundle
 
 script:
-  - env CAPTURE_STDERR=${CAPTURE_STDERR:-false} bundle exec rake ci
+  - bundle exec rake ci
 
 env:
   - "RAILS_VERSION=4.0"
@@ -31,8 +31,6 @@ matrix:
   - rvm: 2.1
     env: RAILS_VERSION=master
   include:
-  - rvm: 2.2
-    env: CAPTURE_STDERR=true
   - rvm: jruby-9.0.4.0
     env: JRUBY_OPTS='-Xcompat.version=2.0 --server -Xcompile.invokedynamic=false -Xcli.debug=true --debug'
   allow_failures:

test/capture_warnings.rb

@@ -1,77 +0,0 @@
-# https://raw.githubusercontent.com/metric_fu/metric_fu/master/spec/capture_warnings.rb
-require 'tempfile'
-require 'fileutils'
-
-class CaptureWarnings
-  def initialize(fail_on_warnings = true)
-    @fail_on_warnings = fail_on_warnings
-    @stderr_file = Tempfile.new('app.stderr')
-    @app_root ||= Dir.pwd
-    @output_dir = File.join(app_root, 'tmp')
-    FileUtils.mkdir_p(output_dir)
-    @ignore_dirs = [
-      File.join(app_root, '.bundle'),
-      File.join(app_root, 'bundle'),
-      File.join(app_root, 'vendor')
-    ]
-    @output = STDOUT
-  end
-
-  def execute!(minitest_run)
-    $VERBOSE = true
-    $stderr.reopen(stderr_file.path)
-    at_exit do
-      stderr_file.rewind
-      lines = stderr_file.read.split("\n")
-      stderr_file.close!
-      $stderr.reopen(STDERR)
-      after_tests(lines)
-    end
-    proc do |argv|
-      minitest_run.call(argv)
-    end
-  end
-
-  def after_tests(lines)
-    app_warnings, other_warnings = lines.partition do |line|
-      line.include?(app_root) && ignore_dirs.none? { |ignore_dir| line.include?(ignore_dir) }
-    end
-
-    if app_warnings.any?
-      warnings_message = app_warnings.join("\n")
-      print_warnings = true
-    else
-      warnings_message = 'None. Yay!'
-      ENV['FULL_BUILD'] ||= ENV['CI']
-      running_ci          = ENV['FULL_BUILD'] =~ /\Atrue\z/i
-      print_warnings = running_ci
-    end
-
-    if other_warnings.any?
-      File.write(File.join(output_dir, 'warnings.txt'), other_warnings.join("\n") << "\n")
-      warnings_message << "\nNon-app warnings written to tmp/warnings.txt"
-      print_warnings = true
-    end
-
-    header = "#{'-' * 22} app warnings: #{'-' * 22}"
-    message = <<-EOF.strip_heredoc
-
-    #{header}
-
-    #{warnings_message}
-
-    #{'-' * header.size}
-    EOF
-
-    output.puts(message) if print_warnings
-
-    # fail the build...
-    if fail_on_warnings && app_warnings.any?
-      abort "Failing build due to app warnings: #{app_warnings.inspect}"
-    end
-  end
-
-  private
-
-  attr_reader :stderr_file, :app_root, :output_dir, :ignore_dirs, :fail_on_warnings, :output
-end

test/test_helper.rb

@@ -20,47 +20,28 @@ require 'active_support/json'
 require 'fileutils'
 FileUtils.mkdir_p(File.expand_path('../../tmp/cache', __FILE__))
 
-# https://github.com/seattlerb/minitest/blob/master/lib/minitest/autorun.rb
 gem 'minitest'
 begin
   require 'minitest'
 rescue LoadError
   # Minitest 4
-  require 'minitest/unit'
+  require 'minitest/autorun'
-  require 'minitest/spec'
-  require 'minitest/mock'
   $minitest_version = 4
-  # Minitest 4
   # https://github.com/seattlerb/minitest/blob/644a52fd0/lib/minitest/autorun.rb
   # https://github.com/seattlerb/minitest/blob/644a52fd0/lib/minitest/unit.rb#L768-L787
   # Ensure backward compatibility with Minitest 4
   Minitest = MiniTest unless defined?(Minitest)
   Minitest::Test = MiniTest::Unit::TestCase
-  minitest_run = ->(argv) { MiniTest::Unit.new.run(argv) }
 else
   # Minitest 5
+  require 'minitest/autorun'
   $minitest_version = 5
-  # Minitest 5
   # https://github.com/seattlerb/minitest/blob/e21fdda9d/lib/minitest/autorun.rb
   # https://github.com/seattlerb/minitest/blob/e21fdda9d/lib/minitest.rb#L45-L59
-  require 'minitest/spec'
-  require 'minitest/mock'
-  minitest_run = ->(argv) { Minitest.run(argv) }
 end
 require 'minitest/reporters'
 Minitest::Reporters.use!
 
-# If there's no failure info, try disabling capturing stderr:
-# `env CAPTURE_STDERR=false rake`
-# This is way easier than writing a Minitest plugin
-# for 4.x and 5.x.
-if ENV['CAPTURE_STDERR'] !~ /false|1/i
-  require 'capture_warnings'
-  minitest_run = CaptureWarnings.new(_fail_build = true).execute!(minitest_run)
-else
-  $VERBOSE = true
-end
-
 require 'active_model_serializers'
 require 'active_model/serializer/railtie'
 
@@ -82,42 +63,3 @@ ActiveSupport.on_load(:active_model_serializers) do
   $action_controller_logger = ActiveModelSerializers.logger
   ActiveModelSerializers.logger = Logger.new(IO::NULL)
 end
-
-# From:
-# https://github.com/seattlerb/minitest/blob/644a52fd0/lib/minitest/unit.rb#L768-L787
-# https://github.com/seattlerb/minitest/blob/e21fdda9d/lib/minitest.rb#L45-L59
-# But we've replaced `at_exit` with `END` called before the 'at_exit' hook.
-class MiniTestHack
-  def self.autorun(minitest_run)
-    # don't run if there was a non-exit exception
-    return if $! and not ($!.kind_of? SystemExit and $!.success?)
-
-    # Original Comment:
-    # the order here is important. The at_exit handler must be
-    # installed before anyone else gets a chance to install their
-    # own, that way we can be assured that our exit will be last
-    # to run (at_exit stacks).
-    #
-    # Now:
-    # The after_run blocks now only run on SigEXIT, which is fine.
-    exit_code = nil
-
-    trap('EXIT') do
-      if $minitest_version == 5
-        @@after_run.reverse_each(&:call)
-      else
-        @@after_tests.reverse_each(&:call)
-      end
-
-      exit exit_code || false
-    end
-
-    exit_code = minitest_run.call(ARGV)
-  end
-end
-# Run MiniTest in `END`, so that it finishes before `at_exit` fires,
-# which guarantees we can run code after MiniTest finishes
-# via an `at_exit` block.
-# This is in service of silencing non-app warnings during test run,
-# and leaves us with the warnings in our app.
-END { MiniTestHack.autorun(minitest_run) }