Updated test setup [skip ci]

Author: ankane

Gemfile

@@ -3,7 +3,7 @@ source "https://rubygems.org"
 gemspec
 
 gem "rake"
-gem "minitest", ">= 5"
+gem "minitest"
 gem "daru"
 gem "matrix" # for daru
 gem "numo-narray", platform: [:mri, :x64_mingw]

Rakefile

@@ -1,13 +1,13 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
 
-task default: :test
 Rake::TestTask.new do |t|
-  t.libs << "test"
   t.pattern = "test/**/*_test.rb"
   t.warning = false # for csv and daru
 end
 
+task default: :test
+
 # ensure vendor files exist
 task :ensure_vendor do
   vendor_config.fetch("platforms").each_key do |k|

test/test_helper.rb

@@ -1,7 +1,6 @@
 require "bundler/setup"
 Bundler.require(:default)
 require "minitest/autorun"
-require "minitest/pride"
 require "json"
 
 class Minitest::Test