openssl: avoid test failure in test_engine.rb

* test/openssl/test_engine.rb (test_openssl_engine_builtin,
  test_openssl_engine_by_id_string): Skip test if 'openssl' engine is
  already loaded. And test the number increased by Engine.load{_by_id,},
  not the total count of loaded engines. Previously, we called
  OpenSSL::Engine.cleanup every time running a test case, but we no
  longer can do it.
  [ruby-core:75225] [Feature #12324]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55387 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 2 deletions

diff --git a/test/test_engine.rb b/test/test_engine.rb
index 77f6e1a9..bbf56a18 100644
--- a/test/test_engine.rb
+++ b/test/test_engine.rb
@@ -13,17 +13,21 @@ class OpenSSL::TestEngine < OpenSSL::TestCase
 
   def test_openssl_engine_builtin
     with_openssl <<-'end;'
+      orig = OpenSSL::Engine.engines
+      skip "'openssl' is already loaded" if orig.any? { |e| e.id == "openssl" }
       engine = OpenSSL::Engine.load("openssl")
       assert_equal(true, engine)
-      assert_equal(1, OpenSSL::Engine.engines.size)
+      assert_equal(1, OpenSSL::Engine.engines.size - orig.size)
     end;
   end
 
   def test_openssl_engine_by_id_string
     with_openssl <<-'end;'
+      orig = OpenSSL::Engine.engines
+      skip "'openssl' is already loaded" if orig.any? { |e| e.id == "openssl" }
       engine = get_engine
       assert_not_nil(engine)
-      assert_equal(1, OpenSSL::Engine.engines.size)
+      assert_equal(1, OpenSSL::Engine.engines.size - orig.size)
     end;
   end