rid of warnings [Fix GH-1953]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/enumerable/all_spec.rb

@@ -142,11 +142,14 @@ describe "Enumerable#all?" do
         pattern.yielded.should == [[0], [1], [2], [-1]]
       end
 
+      # may raise an exception in future versions
+      ruby_version_is ""..."2.6" do
         it "ignores block" do
           @enum2.all?(NilClass) { raise }.should == false
           [1, 2, nil].all?(NilClass) { raise }.should == false
           {a: 1}.all?(Array) { raise }.should == true
         end
+      end
 
       it "always returns true on empty enumeration" do
         @empty.all?(Integer).should == true

spec/ruby/core/enumerable/any_spec.rb

@@ -155,11 +155,14 @@ describe "Enumerable#any?" do
         pattern.yielded.should == [[0], [1], [2]]
       end
 
+      # may raise an exception in future versions
+      ruby_version_is ""..."2.6" do
         it "ignores block" do
           @enum2.any?(NilClass) { raise }.should == true
           [1, 2, nil].any?(NilClass) { raise }.should == true
           {a: 1}.any?(Array) { raise }.should == true
         end
+      end
 
       it "always returns false on empty enumeration" do
         @empty.any?(Integer).should == false

spec/ruby/core/enumerable/none_spec.rb

@@ -111,11 +111,14 @@ describe "Enumerable#none?" do
         pattern.yielded.should == [[0], [1], [2], [-1]]
       end
 
+      # may raise an exception in future versions
+      ruby_version_is ""..."2.6" do
         it "ignores block" do
           @enum2.none?(Integer) { raise }.should == true
           [1, 2, nil].none?(TrueClass) { raise }.should == true
           {a: 1}.none?(Hash) { raise }.should == true
         end
+      end
 
       it "always returns true on empty enumeration" do
         @empty.none?(Integer).should == true

spec/ruby/core/enumerable/one_spec.rb

@@ -102,11 +102,14 @@ describe "Enumerable#one?" do
         pattern.yielded.should == [[0], [1], [2], [-1]]
       end
 
+      # may raise an exception in future versions
+      ruby_version_is ""..."2.6" do
         it "ignores block" do
           @enum2.one?(NilClass) { raise }.should == true
           [1, 2, nil].one?(NilClass) { raise }.should == true
           {a: 1}.one?(Array) { raise }.should == true
         end
+      end
 
       it "always returns false on empty enumeration" do
         @empty.one?(Integer).should == false