Gemfile in flextures-3.1.3 vs Gemfile in flextures-4.0.0

@@ -1,8 +1,13 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in flextures.gemspec
 gemspec
 
+gem "minitest", "5.4.0"
+
 group :test do
-  gem "shoulda", ">= 0"
+  gem "minitest-line", "0.6.2"
+  gem "minitest-bang", "0.1.1"              # let文を使えるようにする
+  gem "minitest-implicit-subject", "1.4.0"  # subject関数を追加する
+  gem "minitest-power_assert", "0.0.3"      # power assertを有効にする
 end