Adds BundleReport CLI class to an entry point from executable file

lib/next_rails/bundle_report/cli.rb

@@ -1,8 +1,12 @@
 # frozen_string_literal: true
 
+require 'optparse'
+require 'next_rails'
+require 'next_rails/bundle_report'
 class NextRails::BundleReport::CLI
   def initialize(argv)
     validate_arguments(argv)
+    @argv = argv
   end
 
   def validate_arguments(argv)
@@ -27,28 +31,19 @@ def validate_arguments(argv)
   end
 
   def run
-    at_exit do
-      setup_dependencies
-      options = parse_options
-      execute_report(ARGV.first, options)
-    end
+    options = parse_options
+    execute_report(@argv.first, options)
   end
 
   private
 
-  def setup_dependencies
-    require 'optparse'
-    require 'next_rails'
-    require 'next_rails/bundle_report'
-  end
-
   def parse_options
     options = {}
     option_parser = OptionParser.new do |opts|
       opts.banner = <<-EOS
         Usage: #{$0} [report-type] [options]
 
-        report-type  There are two report types available: `outdated` and `compatibility`
+        report-type  There are three report types available: `outdated`, `compatibility` and `ruby_check`.
 
         Examples:
           #{$0} compatibility --rails-version 5.0

spec/next_rails/bundle_report/cli_spec.rb

@@ -0,0 +1,32 @@
+require 'spec_helper'
+require 'byebug'
+
+RSpec.describe NextRails::BundleReport::CLI do
+  describe '#initialize' do
+    it 'raises if called with invalid arguments' do
+      expect { described_class.new(['invalid_report_type']) }
+        .to raise_error(ArgumentError,
+                        /Invalid report type 'invalid_report_type'. Valid types are: outdated, compatibility, ruby_check./)
+    end
+
+    it 'calls outdated if called with outdated' do
+      expect(NextRails::BundleReport).to receive(:outdated)
+      described_class.new(['outdated']).run
+    end
+
+    it 'calls compatible_ruby_version if called with ruby_check' do
+      expect(NextRails::BundleReport).to receive(:compatible_ruby_version)
+      described_class.new(['ruby_check', '--rails-version=7.0.0']).run
+    end
+
+    it 'calls rails_compatibility if called with compatibility with rails-version option' do
+      expect(NextRails::BundleReport).to receive(:rails_compatibility)
+      described_class.new(['compatibility', '--rails-version=7.0.0']).run
+    end
+
+    it 'calls ruby_compatibility if called with compatibility with ruby-version option' do
+      expect(NextRails::BundleReport).to receive(:ruby_compatibility)
+      described_class.new(['compatibility', '--ruby-version=3.2.0']).run
+    end
+  end
+end