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, 14 insertions, 10 deletions

diff --git a/spec/ruby/core/string/ljust_spec.rb b/spec/ruby/core/string/ljust_spec.rb
index ed4cb86859..f377e39775 100644
--- a/spec/ruby/core/string/ljust_spec.rb
+++ b/spec/ruby/core/string/ljust_spec.rb
@@ -31,12 +31,14 @@ describe "String#ljust with length, padding" do
     "radiology".ljust(8, '-').should == "radiology"
   end
 
-  it "taints result when self or padstr is tainted" do
-    "x".taint.ljust(4).tainted?.should == true
-    "x".taint.ljust(0).tainted?.should == true
-    "".taint.ljust(0).tainted?.should == true
-    "x".taint.ljust(4, "*").tainted?.should == true
-    "x".ljust(4, "*".taint).tainted?.should == true
+  ruby_version_is ''...'2.7' do
+    it "taints result when self or padstr is tainted" do
+      "x".taint.ljust(4).tainted?.should == true
+      "x".taint.ljust(0).tainted?.should == true
+      "".taint.ljust(0).tainted?.should == true
+      "x".taint.ljust(4, "*").tainted?.should == true
+      "x".ljust(4, "*".taint).tainted?.should == true
+    end
   end
 
   it "tries to convert length to an integer using to_int" do
@@ -81,10 +83,12 @@ describe "String#ljust with length, padding" do
     "foo".ljust(10, StringSpecs::MyString.new("x")).should be_an_instance_of(String)
   end
 
-  it "when padding is tainted and self is untainted returns a tainted string if and only if length is longer than self" do
-    "hello".ljust(4, 'X'.taint).tainted?.should be_false
-    "hello".ljust(5, 'X'.taint).tainted?.should be_false
-    "hello".ljust(6, 'X'.taint).tainted?.should be_true
+  ruby_version_is ''...'2.7' do
+    it "when padding is tainted and self is untainted returns a tainted string if and only if length is longer than self" do
+      "hello".ljust(4, 'X'.taint).tainted?.should be_false
+      "hello".ljust(5, 'X'.taint).tainted?.should be_false
+      "hello".ljust(6, 'X'.taint).tainted?.should be_true
+    end
   end
 
   describe "with width" do