audit: Port audit_options non-strict rules to rubocop and add tests

Library/.rubocop.yml

@@ -21,6 +21,9 @@ FormulaAudit/ChecksumCase:
 FormulaAudit/Conflicts:
   Enabled: true
 
+FormulaAudit/Options:
+  Enabled: true
+
 FormulaAuditStrict/BottleBlock:
   Enabled: true
 

Library/Homebrew/dev-cmd/audit.rb

@@ -555,10 +555,6 @@ class FormulaAuditor
 
   def audit_options
     formula.options.each do |o|
-      if o.name == "32-bit"
-        problem "macOS has been 64-bit only since 10.6 so 32-bit options are deprecated."
-      end
-
       next unless @strict
 
       if o.name == "universal"

Library/Homebrew/rubocops.rb

@@ -8,3 +8,4 @@ require_relative "./rubocops/caveats_cop"
 require_relative "./rubocops/checksum_cop"
 require_relative "./rubocops/legacy_patches_cop"
 require_relative "./rubocops/conflicts_cop"
+require_relative "./rubocops/options_cop"

Library/Homebrew/rubocops/extend/formula_cop.rb

@@ -102,14 +102,11 @@ module RuboCop
 
       # Returns nil if does not depend on dependency_name
       # args: node - dependency_name - dependency's name
-      def depends_on?(dependency_name)
+      def depends_on?(dependency_name, *types)
+        types = [:required, :build, :optional, :recommended, :run] if types.empty?
         dependency_nodes = find_every_method_call_by_name(@body, :depends_on)
         idx = dependency_nodes.index do |n|
-          depends_on_name_type?(n, dependency_name, :required) ||
-            depends_on_name_type?(n, dependency_name, :build) ||
-            depends_on_name_type?(n, dependency_name, :optional) ||
-            depends_on_name_type?(n, dependency_name, :recommended) ||
-            depends_on_name_type?(n, dependency_name, :run)
+          types.any? { |type| depends_on_name_type?(n, dependency_name, type) }
         end
         return if idx.nil?
         @offense_source_range = dependency_nodes[idx].source_range
@@ -138,6 +135,8 @@ module RuboCop
           if type_match && !name_match
             name_match = node_equals?(node.method_args.first.keys.first.children.first, name)
           end
+        else
+          type_match = false
         end
 
         if type_match || name_match
@@ -334,11 +333,13 @@ module RuboCop
       def string_content(node)
         case node.type
         when :str
-          return node.str_content if node.type == :str
+          node.str_content
         when :dstr
-          return node.each_child_node(:str).map(&:str_content).join("") if node.type == :dstr
+          node.each_child_node(:str).map(&:str_content).join("")
         when :const
-          return node.const_name if node.type == :const
+          node.const_name
+        when :sym
+          node.children.first.to_s
         else
           ""
         end

Library/Homebrew/rubocops/options_cop.rb

@@ -0,0 +1,20 @@
+require_relative "./extend/formula_cop"
+
+module RuboCop
+  module Cop
+    module FormulaAudit
+      # This cop audits `options` in Formulae
+      class Options < FormulaCop
+        DEPRECATION_MSG = "macOS has been 64-bit only since 10.6 so 32-bit options are deprecated.".freeze
+
+        def audit_formula(_node, _class_node, _parent_class_node, body_node)
+          option_call_nodes = find_every_method_call_by_name(body_node, :option)
+          option_call_nodes.each do |option_call|
+            option = parameters(option_call).first
+            problem DEPRECATION_MSG if regex_match_group(option, /32-bit/)
+          end
+        end
+      end
+    end
+  end
+end

Library/Homebrew/test/rubocops/options_cop_spec.rb

@@ -0,0 +1,31 @@
+require "rubocop"
+require "rubocop/rspec/support"
+require_relative "../../extend/string"
+require_relative "../../rubocops/options_cop"
+
+describe RuboCop::Cop::FormulaAudit::Options do
+  subject(:cop) { described_class.new }
+
+  context "When auditing options" do
+    it "32-bit" do
+      source = <<-EOS.undent
+        class Foo < Formula
+          url 'http://example.com/foo-1.0.tgz'
+          option "32-bit", "with 32-bit"
+        end
+      EOS
+
+      expected_offenses = [{  message: described_class::DEPRECATION_MSG,
+                              severity: :convention,
+                              line: 3,
+                              column: 10,
+                              source: source }]
+
+      inspect_source(cop, source)
+
+      expected_offenses.zip(cop.offenses).each do |expected, actual|
+        expect_offense(expected, actual)
+      end
+    end
+  end
+end