Skip certain tests for JRuby

Author: st0012

test/test_pp.rb

@@ -173,11 +173,12 @@ def test_anonymous
   end
 
   def test_withinspect
+    omit if RUBY_ENGINE == "jruby"
     a = []
     a << HasInspect.new(a)
     assert_equal("[<inspect:[...]>]\n", PP.pp(a, ''.dup))
     assert_equal("#{a.inspect}\n", PP.pp(a, ''.dup))
-  end unless RUBY_VERSION < "2.7" # temporary mask to test on JRuby 9.3 (2.6 equivalent)
+  end
 
   def test_share_nil
     begin
@@ -197,6 +198,7 @@ def test_hash
   end
 
   def test_hash_in_array
+    omit if RUBY_ENGINE == "jruby"
     assert_equal("[{}]", PP.singleline_pp([->(*a){a.last.clear}.ruby2_keywords.call(a: 1)], ''.dup))
     assert_equal("[{}]", PP.singleline_pp([Hash.ruby2_keywords_hash({})], ''.dup))
   end