add test for using ARGV to check options

2 files changed, 29 insertions, 6 deletions

diff --git a/Library/Homebrew/rubocops/lines_cop.rb b/Library/Homebrew/rubocops/lines_cop.rb
index dac523424..6a6f34821 100644
--- a/Library/Homebrew/rubocops/lines_cop.rb
+++ b/Library/Homebrew/rubocops/lines_cop.rb
@@ -88,11 +88,11 @@ module RuboCop
             end
           end
 
-          # [:debug?, :verbose?, :value].each do |m|
-          #   find_instance_method_call(body_node, :ARGV, m) do
-          #     problem "Use build instead of ARGV to check options"
-          #   end
-          # end
+          [:debug?, :verbose?, :value].each do |m|
+            find_instance_method_call(body_node, "ARGV", m) do
+              problem "Use build instead of ARGV to check options"
+            end
+          end
           #
           # find_instance_method_call(body_node, :man, :+) do |m|
           #   next unless match = regex_match_group(parameters(m).first, %r{man[1-8]})
@@ -320,7 +320,6 @@ module RuboCop
             next unless match = regex_match_group(arg, %r{\-\-(.*)})
             problem "Reference '#{match[1]}' without dashes"
           end
-
         end
 
         def unless_modifier?(node)
diff --git a/Library/Homebrew/test/rubocops/lines_cop_spec.rb b/Library/Homebrew/test/rubocops/lines_cop_spec.rb
index 288ca8f8f..b5ff3d1f4 100644
--- a/Library/Homebrew/test/rubocops/lines_cop_spec.rb
+++ b/Library/Homebrew/test/rubocops/lines_cop_spec.rb
@@ -811,6 +811,30 @@ describe RuboCop::Cop::FormulaAudit::Miscellaneous do
         expect_offense(expected, actual)
       end
     end
+
+    it "with using ARGV to check options" do
+      source = <<-EOS.undent
+        class Foo < Formula
+          desc "foo"
+          url 'http://example.com/foo-1.0.tgz'
+          def test
+            verbose = ARGV.verbose?
+          end
+        end
+      EOS
+
+      expected_offenses = [{  message: "Use build instead of ARGV to check options",
+                              severity: :convention,
+                              line: 5,
+                              column: 14,
+                              source: source }]
+
+      inspect_source(cop, source)
+
+      expected_offenses.zip(cop.offenses).each do |expected, actual|
+        expect_offense(expected, actual)
+      end
+    end
   end
   def expect_offense(expected, actual)
     expect(actual.message).to eq(expected[:message])