range.c: === by cover?

* range.c (range_eqq): switch `Range#===` to use `cover?` instead
  of `include?`.  [Feature #14575]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63453 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 4 deletions

diff --git a/spec/ruby/core/range/case_compare_spec.rb b/spec/ruby/core/range/case_compare_spec.rb
index e0da683649..9a33c5b73b 100644
--- a/spec/ruby/core/range/case_compare_spec.rb
+++ b/spec/ruby/core/range/case_compare_spec.rb
@@ -3,9 +3,18 @@ require_relative 'shared/cover_and_include'
 require_relative 'shared/cover'
 
 describe "Range#===" do
-  it "returns the result of calling #include? on self" do
-    range = 0...10
-    range.should_receive(:include?).with(2).and_return(:true)
-    (range === 2).should == :true
+  ruby_version_is ""..."2.6" do
+    it "returns the result of calling #include? on self" do
+      range = 0...10
+      range.should_receive(:include?).with(2).and_return(:true)
+      (range === 2).should == :true
+    end
+  end
+
+  ruby_version_is "2.6" do
+    it "returns the result of calling #cover? on self" do
+      range = RangeSpecs::Custom.new(0)..RangeSpecs::Custom.new(10)
+      (range === RangeSpecs::Custom.new(2)).should == true
+    end
   end
 end