Set 1.1 now checks subclass-ness stricter

spec/ruby/library/set/flatten_spec.rb

@@ -45,9 +45,11 @@ describe "Set#flatten!" do
     -> { set.flatten! }.should raise_error(ArgumentError)
   end
 
-  context "when Set contains a Set-like object" do
-    it "flattens self, including Set-like objects" do
-      Set[SetSpecs::SetLike.new([1])].flatten!.should == Set[1]
+  version_is(Set::VERSION, ""..."1.1.0") do
+    context "when Set contains a Set-like object" do
+      it "flattens self, including Set-like objects" do
+        Set[SetSpecs::SetLike.new([1])].flatten!.should == Set[1]
+      end
     end
   end
 end

spec/ruby/library/set/proper_subset_spec.rb

@@ -33,9 +33,11 @@ describe "Set#proper_subset?" do
     -> { Set[].proper_subset?(Object.new) }.should raise_error(ArgumentError)
   end
 
-  context "when comparing to a Set-like object" do
-    it "returns true if passed a Set-like object that self is a proper subset of" do
-      Set[1, 2, 3].proper_subset?(SetSpecs::SetLike.new([1, 2, 3, 4])).should be_true
+  version_is(Set::VERSION, ""..."1.1.0") do
+    context "when comparing to a Set-like object" do
+      it "returns true if passed a Set-like object that self is a proper subset of" do
+        Set[1, 2, 3].proper_subset?(SetSpecs::SetLike.new([1, 2, 3, 4])).should be_true
+      end
     end
   end
 end

spec/ruby/library/set/subset_spec.rb

@@ -33,9 +33,11 @@ describe "Set#subset?" do
     -> { Set[].subset?(Object.new) }.should raise_error(ArgumentError)
   end
 
-  context "when comparing to a Set-like object" do
-    it "returns true if passed a Set-like object that self is a subset of" do
-      Set[1, 2, 3].subset?(SetSpecs::SetLike.new([1, 2, 3, 4])).should be_true
+  version_is(Set::VERSION, ""..."1.1.0") do
+    context "when comparing to a Set-like object" do
+      it "returns true if passed a Set-like object that self is a subset of" do
+        Set[1, 2, 3].subset?(SetSpecs::SetLike.new([1, 2, 3, 4])).should be_true
+      end
     end
   end
 end