1 files changed, 31 insertions, 28 deletions
diff --git a/spec/ruby/library/set/sortedset/add_spec.rb b/spec/ruby/library/set/sortedset/add_spec.rb
index 5f8bde02f5..4f3bb252e1 100644
--- a/spec/ruby/library/set/sortedset/add_spec.rb
+++ b/spec/ruby/library/set/sortedset/add_spec.rb
@@ -1,39 +1,42 @@
 require_relative '../../../spec_helper'
-require 'set'
-require_relative 'shared/add'
 
-describe "SortedSet#add" do
-  it_behaves_like :sorted_set_add, :add
+ruby_version_is ""..."3.0" do
+  require 'set'
+  require_relative 'shared/add'
 
-  it "takes only values which responds <=>" do
-    obj = mock('no_comparison_operator')
-    obj.stub!(:respond_to?).with(:<=>).and_return(false)
-    -> { SortedSet["hello"].add(obj) }.should raise_error(ArgumentError)
-  end
+  describe "SortedSet#add" do
+    it_behaves_like :sorted_set_add, :add
 
-  it "raises on incompatible <=> comparison" do
-    # Use #to_a here as elements are sorted only when needed.
-    # Therefore the <=> incompatibility is only noticed on sorting.
-    -> { SortedSet['1', '2'].add(3).to_a }.should raise_error(ArgumentError)
-  end
-end
+    it "takes only values which responds <=>" do
+      obj = mock('no_comparison_operator')
+      obj.stub!(:respond_to?).with(:<=>).and_return(false)
+      -> { SortedSet["hello"].add(obj) }.should raise_error(ArgumentError)
+    end
 
-describe "SortedSet#add?" do
-  before :each do
-    @set = SortedSet.new
+    it "raises on incompatible <=> comparison" do
+      # Use #to_a here as elements are sorted only when needed.
+      # Therefore the <=> incompatibility is only noticed on sorting.
+      -> { SortedSet['1', '2'].add(3).to_a }.should raise_error(ArgumentError)
+    end
   end
 
-  it "adds the passed Object to self" do
-    @set.add?("cat")
-    @set.should include("cat")
-  end
+  describe "SortedSet#add?" do
+    before :each do
+      @set = SortedSet.new
+    end
 
-  it "returns self when the Object has not yet been added to self" do
-    @set.add?("cat").should equal(@set)
-  end
+    it "adds the passed Object to self" do
+      @set.add?("cat")
+      @set.should include("cat")
+    end
+
+    it "returns self when the Object has not yet been added to self" do
+      @set.add?("cat").should equal(@set)
+    end
 
-  it "returns nil when the Object has already been added to self" do
-    @set.add?("cat")
-    @set.add?("cat").should be_nil
+    it "returns nil when the Object has already been added to self" do
+      @set.add?("cat")
+      @set.add?("cat").should be_nil
+    end
   end
 end