tests: add progress bar to test output.

Add minitest-reporters gem. Replace the default output of `bin/rails
test` with a progress bar. The default output just emits periods for
passed tests, which makes it hard to tell how long tests will take and
causes test runner output on Github to appear to hang. The web console
on Github is line buffered, but the default test runner doesn't normally
emit newlines (unless a test fails), so the output can hang for a long
time.

Gemfile

@@ -88,6 +88,7 @@ group :test do
   gem "simplecov", :require => false
   gem "webmock"
   gem "minitest-ci"
+  gem "minitest-reporters"
   gem "mock_redis"
   gem "capybara"
   gem "selenium-webdriver"

Gemfile.lock

@@ -74,6 +74,7 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     airbrussh (1.4.0)
       sshkit (>= 1.6.1, != 1.7.0)
+    ansi (1.5.0)
     ast (2.4.0)
     aws-eventstream (1.1.0)
     aws-partitions (1.326.0)
@@ -214,6 +215,11 @@ GEM
     minitest (5.14.1)
     minitest-ci (3.4.0)
       minitest (>= 5.0.6)
+    minitest-reporters (1.4.2)
+      ansi
+      builder
+      minitest (>= 5.0)
+      ruby-progressbar
     mocha (1.11.2)
     mock_redis (0.23.0)
     msgpack (1.3.3)
@@ -453,6 +459,7 @@ DEPENDENCIES
   memory_profiler
   meta_request
   minitest-ci
+  minitest-reporters
   mocha
   mock_redis
   net-sftp

test/test_helper.rb

@@ -13,6 +13,9 @@ require 'rails/test_help'
 require 'cache'
 require 'webmock/minitest'
 require 'mocha/minitest'
+require 'minitest/reporters'
+
+Minitest::Reporters.use!(Minitest::Reporters::ProgressReporter.new)
 
 Dir[File.expand_path(File.dirname(__FILE__) + "/factories/*.rb")].sort.each {|file| require file}
 Dir[File.expand_path(File.dirname(__FILE__) + "/test_helpers/*.rb")].sort.each {|file| require file}