Use rspec for testing

.gitignore

@@ -1 +1,3 @@
 /pkg/
+
+.rspec_status

.rspec

@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper

Gemfile

@@ -6,4 +6,5 @@ gemspec
 
 group :test do
   gem 'mock_redis'
+  gem 'rspec'
 end

Gemfile.lock

@@ -6,10 +6,24 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
+    diff-lcs (1.5.1)
     minitest (5.15.0)
     mock_redis (0.30.0)
       ruby2_keywords
     rake (12.3.3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
     ruby2_keywords (0.0.5)
 
 PLATFORMS
@@ -21,6 +35,7 @@ DEPENDENCIES
   minitest (~> 5.0)
   mock_redis
   rake (~> 12.0)
+  rspec
 
 BUNDLED WITH
    2.2.33

Rakefile

@@ -1,14 +1,15 @@
 # frozen_string_literal: true
 
 require 'bundler/gem_tasks'
-require 'rake/testtask'
+require 'rspec/core/rake_task'
 
-Rake::TestTask.new(:test) do |task|
-  task.test_files = FileList['test/**/*_test.rb']
-  task.libs += %w(test lib)
-end
+RSpec::Core::RakeTask.new(:spec)
+
+require 'rubocop/rake_task'
+
+RuboCop::RakeTask.new
 
-task default: :test
+task default: %i[spec rubocop]
 
 task :version do |t|
   puts ChainedJob::VERSION

spec/spec_helper.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require 'chained_job'
+
+RSpec.configure do |config|
+  config.example_status_persistence_file_path = '.rspec_status'
+  config.disable_monkey_patching!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+
+  config.mock_with :rspec do |c|
+    c.allow_message_expectations_on_nil = true
+  end
+end