2 files changed, 20 insertions, 7 deletions
diff --git a/spec/ruby/core/true/singleton_method_spec.rb b/spec/ruby/core/true/singleton_method_spec.rb
new file mode 100644
index 0000000000..c06793850f
--- /dev/null
+++ b/spec/ruby/core/true/singleton_method_spec.rb
@@ -0,0 +1,15 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#singleton_method" do
+  ruby_version_is '3.3' do
+    it "raises regardless of whether TrueClass defines the method" do
+      -> { true.singleton_method(:foo) }.should raise_error(NameError)
+      begin
+        def (true).foo; end
+        -> { true.singleton_method(:foo) }.should raise_error(NameError)
+      ensure
+        TrueClass.send(:remove_method, :foo)
+      end
+    end
+  end
+end
diff --git a/spec/ruby/core/true/to_s_spec.rb b/spec/ruby/core/true/to_s_spec.rb
index f26cd138e2..fa1b53a580 100644
--- a/spec/ruby/core/true/to_s_spec.rb
+++ b/spec/ruby/core/true/to_s_spec.rb
@@ -5,13 +5,11 @@ describe "TrueClass#to_s" do
     true.to_s.should == "true"
   end
 
-  ruby_version_is "2.7" do
-    it "returns a frozen string" do
-      true.to_s.should.frozen?
-    end
+  it "returns a frozen string" do
+    true.to_s.should.frozen?
+  end
 
-    it "always returns the same string" do
-      true.to_s.should equal(true.to_s)
-    end
+  it "always returns the same string" do
+    true.to_s.should equal(true.to_s)
   end
 end