Spec style.

spec/cartesian_product/mixin_examples.rb

@@ -12,7 +12,7 @@
 
   it "the cartprod of two empty Set's should return an empty Set" do
     set     = subject[[]]
-    results = set.cartprod([[]])
+    results = set.cartprod([[]]).to_a
 
     results.should be_empty
   end

spec/permute/mixin_examples.rb

@@ -4,40 +4,45 @@
 
 shared_examples_for "Permute::Mixin" do
   it "should alias rearrange to permute" do
-    aset = subject[1]
+    set = subject[1]
 
-    aset.should respond_to(:rearrange)
+    set.should respond_to(:rearrange)
   end
 
   describe "#permute" do
     it "should return [[]] for [].permute(0).to_a" do
-      aset = subject[[]]
-
-      aset.permute(0).to_a.should == [[]]
+      set     = subject[[]]
+      results = set.permute(0).to_a
+
+      results.should == [[]]
     end
 
     it "should return [[]] for [1].permute(0).to_a" do
-      aset = subject[[1]]
-
-      aset.permute(0).to_a.should == [[]]
+      set     = subject[[1]]
+      results = set.permute(0).to_a
+
+      results.should == [[]]
     end
 
     it "should return [[1]] for [1].permute(1).to_a" do
-      aset = subject[1]
-
-      aset.permute(1).to_a.should == [[1]]
+      set     = subject[1]
+      results = set.permute(1).to_a
+
+      results.should == [[1]]
     end
 
     it "should return [[1], [2]] for [1, 2].permute(1).to_a" do
-      aset = subject[1, 2]
-
-      aset.permute(1).to_a.should == [[1], [2]]
+      set     = subject[1, 2]
+      results = set.permute(1).to_a
+
+      results.should == [[1], [2]]
     end
 
     it "should return [[1, 2]] for [1, 2].permute(2).to_a" do
-      aset = subject[1, 2]
-
-      aset.permute(2).to_a.should == [[1, 2], [2, 1]]
+      set     = subject[1, 2]
+      results = set.permute(2).to_a
+
+      results.should == [[1, 2], [2, 1]]
     end
   end
 end