Skip failing specs on JRuby due to jruby-openssl OpenSSL::PKey::EC …

…bugs (issue #261).

spec/crypto/key/ec_spec.rb

@@ -32,6 +32,10 @@
     subject { described_class }
 
     it "must parse a PEM encoded EC key" do
+      if RUBY_ENGINE == 'jruby'
+        skip "https://github.com/jruby/jruby-openssl/issues/257"
+      end
+
       expect(subject.parse(pem).to_pem).to eq(pem)
     end
   end
@@ -40,6 +44,10 @@
     subject { described_class }
 
     it "must read and parse the path to the key file" do
+      if RUBY_ENGINE == 'jruby'
+        skip "https://github.com/jruby/jruby-openssl/issues/257"
+      end
+
       expect(subject.load(path).to_pem).to eq(pem)
     end
   end