[WIP] Add bundle_report compatibility --ruby-version report

#115

lib/next_rails/bundle_report/ruby_version.rb

@@ -0,0 +1,12 @@
+class NextRails::BundleReport::RubyVersion
+  attr_reader :ruby_version, :gems
+
+  def initialize(gems: NextRails::GemInfo.all, ruby_version: nil)
+    @gems = gems
+    @ruby_version = ruby_version
+  end
+
+  def incompatible
+    gems.reject { |gem| gem.compatible_with_ruby?(ruby_version) }
+  end
+end

lib/next_rails/gem_info.rb

@@ -147,5 +147,9 @@ def spec_compatible_with_rails?(specification: nil, rails_version: nil)
         rails_dependency.requirement.satisfied_by?(Gem::Version.new(rails_version))
       end
     end
+
+    def compatible_with_ruby?(ruby_version)
+      gem_specification.required_ruby_version.satisfied_by?(Gem::Version.new(ruby_version))
+    end
   end
 end

spec/next_rails/bundle_report/ruby_version_spec.rb

@@ -0,0 +1,11 @@
+require_relative "../../spec_helper"
+require_relative "../../../lib/next_rails/bundle_report/ruby_version"
+
+RSpec.describe NextRails::BundleReport::RubyVersion do
+  describe "#incompatible" do
+    it "returns 0 incompatible gems" do
+      result = NextRails::BundleReport::RubyVersion.new(ruby_version: 3.0).incompatible
+      expect(result).to eq []
+    end
+  end
+end