object.c (rb_obj_match): use rb_warn for deprecation warning

Now the warning is printed even without -w option.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66576 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

object.c

@@ -1687,8 +1687,8 @@ rb_false(VALUE obj)
 static VALUE
 rb_obj_match(VALUE obj1, VALUE obj2)
 {
-    rb_warning("deprecated Object#=~ is called on %"PRIsVALUE
+    rb_warn("deprecated Object#=~ is called on %"PRIsVALUE
-               "; it always returns nil", rb_obj_class(obj1));
+            "; it always returns nil", rb_obj_class(obj1));
     return Qnil;
 }
 

test/minitest/test_minitest_unit.rb

@@ -1529,7 +1529,9 @@ class TestMiniTestUnitTestCase < MiniTest::Unit::TestCase
   def test_refute_match_matcher_object
     @assertion_count = 2
     non_verbose do
-      @tc.refute_match Object.new, 5 # default #=~ returns false
+      obj = Object.new
+      def obj.=~(other); false; end
+      @tc.refute_match obj, 5
     end
   end
 

test/ruby/test_object.rb

@@ -946,4 +946,13 @@ class TestObject < Test::Unit::TestCase
       end
     EOS
   end
+
+  def test_matcher
+    assert_warning(/deprecated Object#=~ is called on Object/) do
+      assert_equal(Object.new =~ 42, nil)
+    end
+    assert_warning(/deprecated Object#=~ is called on Array/) do
+      assert_equal([] =~ 42, nil)
+    end
+  end
 end