Add category to `rb_warn_deprecated`

PR https://github.com/ruby/ruby/pull/3418 added a category to
`rb_warn_deprecated_to_remove` but not to `rb_warn_deprecated`. This
adds the same code to `rb_warn_deprecated` so that those warnings also
get a category.

This change also adds tests for `rb_warn_deprecated` and updates the
tests for `rb_warn_deprecated_to_remove` to have clearer names.

I've fixed the call to `rb_method_entry` as we need to be using the
instance method, not singleton.

Feature: https://bugs.ruby-lang.org/issues/17122

1 files changed, 14 insertions, 2 deletions

diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index a89aed8806..120b041830 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -960,13 +960,25 @@ $stderr = $stdout; raise "\x82\xa0"') do |outs, errs, status|
     assert_equal(["\n"],     capture_warning_warn {warn ""})
   end
 
-  def test_warn_backwards_compatibility
+  def test_warn_deprecated_backwards_compatibility_category
+    warning = capture_warning_warn { Dir.exists?("non-existent") }
+
+    assert_match(/deprecated/, warning[0])
+  end
+
+  def test_warn_deprecated_category
+    warning = capture_warning_warn(category: true) { Dir.exists?("non-existent") }
+
+    assert_equal :deprecated, warning[0][1]
+  end
+
+  def test_warn_deprecated_to_remove_backwards_compatibility_category
     warning = capture_warning_warn { Object.new.tainted? }
 
     assert_match(/deprecated/, warning[0])
   end
 
-  def test_warn_category
+  def test_warn_deprecated_to_remove_category
     warning = capture_warning_warn(category: true) { Object.new.tainted? }
 
     assert_equal :deprecated, warning[0][1]