1 files changed, 5 insertions, 17 deletions
diff --git a/spec/ruby/core/string/delete_spec.rb b/spec/ruby/core/string/delete_spec.rb
index ebca0b7dae..6d359776e4 100644
--- a/spec/ruby/core/string/delete_spec.rb
+++ b/spec/ruby/core/string/delete_spec.rb
@@ -1,4 +1,5 @@
 # -*- encoding: utf-8 -*-
+# frozen_string_literal: false
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
@@ -68,15 +69,6 @@ describe "String#delete" do
     -> { "hello".delete("^h-e") }.should raise_error(ArgumentError)
   end
 
-  ruby_version_is ''...'2.7' do
-    it "taints result when self is tainted" do
-      "hello".taint.delete("e").should.tainted?
-      "hello".taint.delete("a-z").should.tainted?
-
-      "hello".delete("e".taint).should_not.tainted?
-    end
-  end
-
   it "tries to convert each set arg to a string using to_str" do
     other_string = mock('lo')
     other_string.should_receive(:to_str).and_return("lo")
@@ -93,16 +85,12 @@ describe "String#delete" do
     -> { "hello world".delete(mock('x')) }.should raise_error(TypeError)
   end
 
-  ruby_version_is ''...'3.0' do
-    it "returns subclass instances when called on a subclass" do
-      StringSpecs::MyString.new("oh no!!!").delete("!").should be_an_instance_of(StringSpecs::MyString)
-    end
+  it "returns String instances when called on a subclass" do
+    StringSpecs::MyString.new("oh no!!!").delete("!").should be_an_instance_of(String)
   end
 
-  ruby_version_is '3.0' do
-    it "returns String instances when called on a subclass" do
-      StringSpecs::MyString.new("oh no!!!").delete("!").should be_an_instance_of(String)
-    end
+  it "returns a String in the same encoding as self" do
+    "hello".encode("US-ASCII").delete("lo").encoding.should == Encoding::US_ASCII
   end
 end