Port Homebrew::Cmd::Caskroom

Library/Homebrew/cmd/--caskroom.rb

@@ -1,32 +1,35 @@
 # typed: strict
 # frozen_string_literal: true
 
+require "abstract_command"
+
 module Homebrew
-  module_function
+  module Cmd
+    class Caskroom < AbstractCommand
 
-  sig { returns(CLI::Parser) }
-  def __caskroom_args
-    Homebrew::CLI::Parser.new do
-      description <<~EOS
-        Display Homebrew's Caskroom path.
+      sig { override.returns(String) }
+      def self.command_name = "--caskroom"
 
-        If <cask> is provided, display the location in the Caskroom where <cask>
-        would be installed, without any sort of versioned directory as the last path.
-      EOS
+      cmd_args do
+        description <<~EOS
+          Display Homebrew's Caskroom path.
 
-      named_args :cask
-    end
-  end
+          If <cask> is provided, display the location in the Caskroom where <cask>
+          would be installed, without any sort of versioned directory as the last path.
+        EOS
 
-  sig { void }
-  def __caskroom
-    args = __caskroom_args.parse
+        named_args :cask
+      end
 
-    if args.named.to_casks.blank?
-      puts Cask::Caskroom.path
-    else
-      args.named.to_casks.each do |cask|
-        puts "#{Cask::Caskroom.path}/#{cask.token}"
+      sig { override.void }
+      def run
+        if args.named.to_casks.blank?
+          puts Cask::Caskroom.path
+        else
+          args.named.to_casks.each do |cask|
+            puts "#{Cask::Caskroom.path}/#{cask.token}"
+          end
+        end
       end
     end
   end

Library/Homebrew/test/cmd/--caskroom_spec.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
+require "cmd/--caskroom"
 require "cmd/shared_examples/args_parse"
 
-RSpec.describe "brew --caskroom" do
+RSpec.describe Homebrew::Cmd::Caskroom do
   it_behaves_like "parseable arguments"
 
   it "prints Homebrew's Caskroom", :integration_test do