object.c: Deprecate Object#=~ and add NilClass#=~`

Object#=~ always returns nil.  This behavior is not only unuseful but
also troublesome because it may hide a type error.

This change deprecates Object#=~.  For compatibility, NilClass#=~ is
newly introduced.  [Feature #15231]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65989 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/test/minitest/test_minitest_unit.rb b/test/minitest/test_minitest_unit.rb
index 833d582496..3d92b865c3 100644
--- a/test/minitest/test_minitest_unit.rb
+++ b/test/minitest/test_minitest_unit.rb
@@ -1528,7 +1528,9 @@ class TestMiniTestUnitTestCase < MiniTest::Unit::TestCase
 
   def test_refute_match_matcher_object
     @assertion_count = 2
-    @tc.refute_match Object.new, 5 # default #=~ returns false
+    non_verbose do
+      @tc.refute_match Object.new, 5 # default #=~ returns false
+    end
   end
 
   def test_refute_match_object_triggered