add tests for vendored deps

Library/Homebrew/rubocops/lines_cop.rb

@@ -135,14 +135,13 @@ module RuboCop
               problem "\"\#\{prefix}#{match[1]}\" should be \"\#{#{match[2].downcase}}\""
             end
           end
+          find_every_method_call_by_name(body_node, :depends_on).each do |m|
+            key, value = destructure_hash(parameters(m).first)
+            next if (key.nil? || value.nil?)
+            next unless match = regex_match_group(value, %r{(lua|perl|python|ruby)(\d*)})
+            problem "#{match[1]} modules should be vendored rather than use deprecated #{m.source}`"
+          end
 
-          # find_every_method_call_by_name(body_node, :depends_on) do |m|
-          #   key, value = destructure_hash(paramters(m).first)
-          #   next unless key.str_type?
-          #   next unless match = regex_match_group(value, %r{(lua|perl|python|ruby)(\d*)})
-          #   problem "#{match[1]} modules should be vendored rather than use deprecated #{m.source}`"
-          # end
-          #
           # find_every_method_call_by_name(body_node, :system).each do |m|
           #   next unless match = regex_match_group(parameters(m).first, %r{(env|export)(\s+)?})
           #   problem "Use ENV instead of invoking '#{match[1]}' to modify the environment"
@@ -345,8 +344,8 @@ module RuboCop
            $(hash (pair $(str _) (array $(str _) ...)))}
         EOS
 
-        def_node_search :destructure_hash, <<-EOS.undent
-          (hash (pair $_ $_))
+        def_node_matcher :destructure_hash, <<-EOS.undent
+          (hash (pair $(str _) $(sym _)))
         EOS
 
         def_node_search :formula_path_strings, <<-EOS.undent

Library/Homebrew/test/rubocops/lines_cop_spec.rb

@@ -1051,6 +1051,28 @@ describe RuboCop::Cop::FormulaAudit::Miscellaneous do
       end
     end
 
+    it "with dependecies which have to vendored" do
+      source = <<-EOS.undent
+        class Foo < Formula
+          desc "foo"
+          url 'http://example.com/foo-1.0.tgz'
+          depends_on "lpeg" => :lua51
+        end
+      EOS
+
+      expected_offenses = [{  message: "lua modules should be vendored rather than use deprecated depends_on \"lpeg\" => :lua51`",
+                              severity: :convention,
+                              line: 4,
+                              column: 24,
+                              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])