add tests for dependencies

Library/Homebrew/rubocops/lines_cop.rb

@@ -148,13 +148,15 @@ module RuboCop
             problem "Use ENV instead of invoking '#{match[1]}' to modify the environment"
           end
 
-          # find_every_method_call_by_name(body_node, :depends_on).each do |m|
+          find_every_method_call_by_name(body_node, :depends_on).each do |m|
-          #   next unless modifier?(m)
+            next if modifier?(m.parent)
-          #   dep, option = hash_dep(m)
+            param = parameters(m).first
-          #   next if dep.nil? || option.nil?
+            dep, option = hash_dep(param)
-          #   problem "Dependency #{string_content(dep)} should not use option #{string_content(option)}"
+            next if dep.nil? || option.nil?
-          # end
+            offending_node(param)
-          #
+            problem "Dependency #{string_content(dep)} should not use option #{string_content(option)}"
+          end
+
           # find_instance_method_call(body_node, :version, :==) do |m|
           #   next unless parameters_passed?(m, "HEAD")
           #   problem "Use 'build.head?' instead of inspecting 'version'"
@@ -328,6 +330,7 @@ module RuboCop
         end
 
         def modifier?(node)
+          return false unless node.if_type?
           node.modifier_form?
         end
 
@@ -340,9 +343,9 @@ module RuboCop
         EOS
 
         # Match depends_on with hash as argument
-        def_node_search :hash_dep, <<-EOS.undent
+        def_node_matcher :hash_dep, <<-EOS.undent
-          {$(hash (pair $(str _) $(str _)))
+          {(hash (pair $(str _) $(str _)))
-           $(hash (pair $(str _) (array $(str _) ...)))}
+           (hash (pair $(str _) (array $(str _) ...)))}
         EOS
 
         def_node_matcher :destructure_hash, <<-EOS.undent

Library/Homebrew/test/rubocops/lines_cop_spec.rb

@@ -1095,6 +1095,28 @@ describe RuboCop::Cop::FormulaAudit::Miscellaneous do
       end
     end
 
+    it "with dependencies with invalid options" do
+      source = <<-EOS.undent
+        class Foo < Formula
+          desc "foo"
+          url 'http://example.com/foo-1.0.tgz'
+          depends_on "foo" => "with-bar"
+        end
+      EOS
+
+      expected_offenses = [{  message: "Dependency foo should not use option with-bar",
+                              severity: :convention,
+                              line: 4,
+                              column: 13,
+                              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])