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.

4 files changed, 113 insertions, 101 deletions

diff --git a/spec/ruby/core/array/shared/clone.rb b/spec/ruby/core/array/shared/clone.rb
index 95d0d0a3d5..f6f581b17c 100644
--- a/spec/ruby/core/array/shared/clone.rb
+++ b/spec/ruby/core/array/shared/clone.rb
@@ -18,25 +18,27 @@ describe :array_clone, shared: true do
     b.__id__.should_not == a.__id__
   end
 
-  it "copies taint status from the original" do
-    a = [1, 2, 3, 4]
-    b = [1, 2, 3, 4]
-    a.taint
-    aa = a.send @method
-    bb = b.send @method
+  ruby_version_is ''...'2.7' do
+    it "copies taint status from the original" do
+      a = [1, 2, 3, 4]
+      b = [1, 2, 3, 4]
+      a.taint
+      aa = a.send @method
+      bb = b.send @method
 
-    aa.tainted?.should == true
-    bb.tainted?.should == false
-  end
+      aa.tainted?.should == true
+      bb.tainted?.should == false
+    end
 
-  it "copies untrusted status from the original" do
-    a = [1, 2, 3, 4]
-    b = [1, 2, 3, 4]
-    a.untrust
-    aa = a.send @method
-    bb = b.send @method
+    it "copies untrusted status from the original" do
+      a = [1, 2, 3, 4]
+      b = [1, 2, 3, 4]
+      a.untrust
+      aa = a.send @method
+      bb = b.send @method
 
-    aa.untrusted?.should == true
-    bb.untrusted?.should == false
+      aa.untrusted?.should == true
+      bb.untrusted?.should == false
+    end
   end
 end
diff --git a/spec/ruby/core/array/shared/collect.rb b/spec/ruby/core/array/shared/collect.rb
index 80e2739893..cbe32d2ab4 100644
--- a/spec/ruby/core/array/shared/collect.rb
+++ b/spec/ruby/core/array/shared/collect.rb
@@ -42,16 +42,18 @@ describe :array_collect, shared: true do
     }.should raise_error(ArgumentError)
   end
 
-  it "does not copy tainted status" do
-    a = [1, 2, 3]
-    a.taint
-    a.send(@method){|x| x}.tainted?.should be_false
-  end
+  ruby_version_is ''...'2.7' do
+    it "does not copy tainted status" do
+      a = [1, 2, 3]
+      a.taint
+      a.send(@method){|x| x}.tainted?.should be_false
+    end
 
-  it "does not copy untrusted status" do
-    a = [1, 2, 3]
-    a.untrust
-    a.send(@method){|x| x}.untrusted?.should be_false
+    it "does not copy untrusted status" do
+      a = [1, 2, 3]
+      a.untrust
+      a.send(@method){|x| x}.untrusted?.should be_false
+    end
   end
 
   before :all do
@@ -94,19 +96,21 @@ describe :array_collect_b, shared: true do
     a.should == ["1!", "2!", "3!"]
   end
 
-  it "keeps tainted status" do
-    a = [1, 2, 3]
-    a.taint
-    a.tainted?.should be_true
-    a.send(@method){|x| x}
-    a.tainted?.should be_true
-  end
+  ruby_version_is ''...'2.7' do
+    it "keeps tainted status" do
+      a = [1, 2, 3]
+      a.taint
+      a.tainted?.should be_true
+      a.send(@method){|x| x}
+      a.tainted?.should be_true
+    end
 
-  it "keeps untrusted status" do
-    a = [1, 2, 3]
-    a.untrust
-    a.send(@method){|x| x}
-    a.untrusted?.should be_true
+    it "keeps untrusted status" do
+      a = [1, 2, 3]
+      a.untrust
+      a.send(@method){|x| x}
+      a.untrusted?.should be_true
+    end
   end
 
   describe "when frozen" do
diff --git a/spec/ruby/core/array/shared/inspect.rb b/spec/ruby/core/array/shared/inspect.rb
index 434440c25b..736f8d946b 100644
--- a/spec/ruby/core/array/shared/inspect.rb
+++ b/spec/ruby/core/array/shared/inspect.rb
@@ -64,28 +64,30 @@ describe :array_inspect, shared: true do
     ArraySpecs.empty_recursive_array.send(@method).should == "[[...]]"
   end
 
-  it "taints the result if the Array is non-empty and tainted" do
-    [1, 2].taint.send(@method).tainted?.should be_true
-  end
+  ruby_version_is ''...'2.7' do
+    it "taints the result if the Array is non-empty and tainted" do
+      [1, 2].taint.send(@method).tainted?.should be_true
+    end
 
-  it "does not taint the result if the Array is tainted but empty" do
-    [].taint.send(@method).tainted?.should be_false
-  end
+    it "does not taint the result if the Array is tainted but empty" do
+      [].taint.send(@method).tainted?.should be_false
+    end
 
-  it "taints the result if an element is tainted" do
-    ["str".taint].send(@method).tainted?.should be_true
-  end
+    it "taints the result if an element is tainted" do
+      ["str".taint].send(@method).tainted?.should be_true
+    end
 
-  it "untrusts the result if the Array is untrusted" do
-    [1, 2].untrust.send(@method).untrusted?.should be_true
-  end
+    it "untrusts the result if the Array is untrusted" do
+      [1, 2].untrust.send(@method).untrusted?.should be_true
+    end
 
-  it "does not untrust the result if the Array is untrusted but empty" do
-    [].untrust.send(@method).untrusted?.should be_false
-  end
+    it "does not untrust the result if the Array is untrusted but empty" do
+      [].untrust.send(@method).untrusted?.should be_false
+    end
 
-  it "untrusts the result if an element is untrusted" do
-    ["str".untrust].send(@method).untrusted?.should be_true
+    it "untrusts the result if an element is untrusted" do
+      ["str".untrust].send(@method).untrusted?.should be_true
+    end
   end
 
   describe "with encoding" do
diff --git a/spec/ruby/core/array/shared/join.rb b/spec/ruby/core/array/shared/join.rb
index 38bdde9502..5e7193de8a 100644
--- a/spec/ruby/core/array/shared/join.rb
+++ b/spec/ruby/core/array/shared/join.rb
@@ -58,32 +58,34 @@ describe :array_join_with_default_separator, shared: true do
     -> { ArraySpecs.empty_recursive_array.send(@method) }.should raise_error(ArgumentError)
   end
 
-  it "taints the result if the Array is tainted and non-empty" do
-    [1, 2].taint.send(@method).tainted?.should be_true
-  end
+  ruby_version_is ''...'2.7' do
+    it "taints the result if the Array is tainted and non-empty" do
+      [1, 2].taint.send(@method).tainted?.should be_true
+    end
 
-  it "does not taint the result if the Array is tainted but empty" do
-    [].taint.send(@method).tainted?.should be_false
-  end
+    it "does not taint the result if the Array is tainted but empty" do
+      [].taint.send(@method).tainted?.should be_false
+    end
 
-  it "taints the result if the result of coercing an element is tainted" do
-    s = mock("taint")
-    s.should_receive(:to_s).and_return("str".taint)
-    [s].send(@method).tainted?.should be_true
-  end
+    it "taints the result if the result of coercing an element is tainted" do
+      s = mock("taint")
+      s.should_receive(:to_s).and_return("str".taint)
+      [s].send(@method).tainted?.should be_true
+    end
 
-  it "untrusts the result if the Array is untrusted and non-empty" do
-    [1, 2].untrust.send(@method).untrusted?.should be_true
-  end
+    it "untrusts the result if the Array is untrusted and non-empty" do
+      [1, 2].untrust.send(@method).untrusted?.should be_true
+    end
 
-  it "does not untrust the result if the Array is untrusted but empty" do
-    [].untrust.send(@method).untrusted?.should be_false
-  end
+    it "does not untrust the result if the Array is untrusted but empty" do
+      [].untrust.send(@method).untrusted?.should be_false
+    end
 
-  it "untrusts the result if the result of coercing an element is untrusted" do
-    s = mock("untrust")
-    s.should_receive(:to_s).and_return("str".untrust)
-    [s].send(@method).untrusted?.should be_true
+    it "untrusts the result if the result of coercing an element is untrusted" do
+      s = mock("untrust")
+      s.should_receive(:to_s).and_return("str".untrust)
+      [s].send(@method).untrusted?.should be_true
+    end
   end
 
   it "uses the first encoding when other strings are compatible" do
@@ -125,39 +127,41 @@ describe :array_join_with_string_separator, shared: true do
     [1, [2, ArraySpecs::MyArray[3, 4], 5], 6].send(@method, ":").should == "1:2:3:4:5:6"
   end
 
-  describe "with a tainted separator" do
-    before :each do
-      @sep = ":".taint
-    end
+  ruby_version_is ''...'2.7' do
+    describe "with a tainted separator" do
+      before :each do
+        @sep = ":".taint
+      end
 
-    it "does not taint the result if the array is empty" do
-      [].send(@method, @sep).tainted?.should be_false
-    end
+      it "does not taint the result if the array is empty" do
+        [].send(@method, @sep).tainted?.should be_false
+      end
 
-    it "does not taint the result if the array has only one element" do
-      [1].send(@method, @sep).tainted?.should be_false
-    end
+      it "does not taint the result if the array has only one element" do
+        [1].send(@method, @sep).tainted?.should be_false
+      end
 
-    it "taints the result if the array has two or more elements" do
-      [1, 2].send(@method, @sep).tainted?.should be_true
+      it "taints the result if the array has two or more elements" do
+        [1, 2].send(@method, @sep).tainted?.should be_true
+      end
     end
-  end
 
-  describe "with an untrusted separator" do
-    before :each do
-      @sep = ":".untrust
-    end
+    describe "with an untrusted separator" do
+      before :each do
+        @sep = ":".untrust
+      end
 
-    it "does not untrust the result if the array is empty" do
-      [].send(@method, @sep).untrusted?.should be_false
-    end
+      it "does not untrust the result if the array is empty" do
+        [].send(@method, @sep).untrusted?.should be_false
+      end
 
-    it "does not untrust the result if the array has only one element" do
-      [1].send(@method, @sep).untrusted?.should be_false
-    end
+      it "does not untrust the result if the array has only one element" do
+        [1].send(@method, @sep).untrusted?.should be_false
+      end
 
-    it "untrusts the result if the array has two or more elements" do
-      [1, 2].send(@method, @sep).untrusted?.should be_true
+      it "untrusts the result if the array has two or more elements" do
+        [1, 2].send(@method, @sep).untrusted?.should be_true
+      end
     end
   end
 end