Deprecate taint/trust and related methods, and make the methods no-ops

This removes the related tests, and puts the related specs behind
version guards.  This affects all code in lib, including some
libraries that may want to support older versions of Ruby.

1 files changed, 8 insertions, 6 deletions

diff --git a/spec/ruby/core/string/tr_spec.rb b/spec/ruby/core/string/tr_spec.rb
index 721ebab51c..ae826fd79b 100644
--- a/spec/ruby/core/string/tr_spec.rb
+++ b/spec/ruby/core/string/tr_spec.rb
@@ -61,14 +61,16 @@ describe "String#tr" do
     StringSpecs::MyString.new("hello").tr("e", "a").should be_an_instance_of(StringSpecs::MyString)
   end
 
-  it "taints the result when self is tainted" do
-    ["h", "hello"].each do |str|
-      tainted_str = str.dup.taint
+  ruby_version_is ''...'2.7' do
+    it "taints the result when self is tainted" do
+      ["h", "hello"].each do |str|
+        tainted_str = str.dup.taint
 
-      tainted_str.tr("e", "a").tainted?.should == true
+        tainted_str.tr("e", "a").tainted?.should == true
 
-      str.tr("e".taint, "a").tainted?.should == false
-      str.tr("e", "a".taint).tainted?.should == false
+        str.tr("e".taint, "a").tainted?.should == false
+        str.tr("e", "a".taint).tainted?.should == false
+      end
     end
   end