Kernel#j and Kernel#jj has been deprecated

ruby/json@27155b6

Author: ksss

stdlib/json/0/json.rbs

@@ -1157,6 +1157,7 @@ module Kernel
   # Outputs *objs* to STDOUT as JSON strings in the shortest form, that is in one
   # line.
   #
+  %a{deprecated}
   def j: (*_ToJson) -> nil
 
   # <!--
@@ -1166,6 +1167,7 @@ module Kernel
   # Outputs *objs* to STDOUT as JSON strings in a pretty format, with indentation
   # and over many lines.
   #
+  %a{deprecated}
   def jj: (*_ToJson) -> nil
 
   # <!--

test/stdlib/json/JSONKernel_test.rb

@@ -7,28 +7,6 @@ class JSONKernelInstanceTest < Test::Unit::TestCase
   library "json"
   testing "::Kernel"
 
-  def silent
-    orig_stdout = $stdout
-    $stdout = StringIO.new
-    yield
-  ensure
-    $stdout = orig_stdout
-  end
-
-  def test_j
-    silent do
-      assert_send_type("(Integer) -> nil", self, :j, 1)
-      assert_send_type("(Array[Integer]) -> nil", self, :j, [1, 2, 3])
-    end
-  end
-
-  def test_jj
-    silent do
-      assert_send_type("(Integer) -> nil", self, :jj, 1)
-      assert_send_type("(Array[Integer]) -> nil", self, :jj, [1, 2, 3])
-    end
-  end
-
   def test_JSON
     assert_send_type("(String) -> Hash[String, Integer]", self, :JSON, '{"a": 1}')
     assert_send_type("(Array[Integer]) -> String", self, :JSON, [1, 2, 3])