Add spec for 'for' and local variables defined outside the method

Author: eregon

spec/ruby/language/fixtures/for_scope.rb

@@ -0,0 +1,15 @@
+module ForSpecs
+  class ForInClassMethod
+    m = :same_variable_set_outside
+
+    def self.foo
+      all = []
+      for m in [:bar, :baz]
+        all << m
+      end
+      all
+    end
+
+    READER = -> { m }
+  end
+end

spec/ruby/language/for_spec.rb

@@ -1,4 +1,5 @@
 require_relative '../spec_helper'
+require_relative 'fixtures/for_scope'
 
 # for name[, name]... in expr [do]
 #   body
@@ -130,6 +131,11 @@ def each
     a.should == 123
   end
 
+  it "does not try to access variables outside the method" do
+    ForSpecs::ForInClassMethod.foo.should == [:bar, :baz]
+    ForSpecs::ForInClassMethod::READER.call.should == :same_variable_set_outside
+  end
+
   it "returns expr" do
     for i in 1..3; end.should == (1..3)
     for i,j in { 1 => 10, 2 => 20 }; end.should == { 1 => 10, 2 => 20 }

spec/tags/language/for_tags.txt

@@ -0,0 +1 @@
+fails:The for expression does not try to access variables outside the method