[Tests] log when openssl doesn't support cipher

This fixes #37.

Author: kapouer

Diff for: test/index.js

@@ -66,9 +66,15 @@ fixtures.valid.ec.forEach(function (f) {
   }
 
   (nCrypto.getHashes().includes(f.scheme) ? test : test.skip)(f.message, function (t) {
-    var nSign = nCrypto.createSign(f.scheme);
+    var nSign;
+    try {
+      nSign = nCrypto.createSign(f.scheme);
+    } catch (ex) {
+      console.info('skipping unsupported scheme', f.scheme);
+      t.end();
+      return;
+    }
     var bSign = bCrypto.createSign(f.scheme);
-
     var bSig = bSign.update(message).sign(priv);
     var nSig = nSign.update(message).sign(priv);
     t.notEqual(bSig.toString('hex'), nSig.toString('hex'), 'not equal sigs');
@@ -82,6 +88,7 @@ fixtures.valid.ec.forEach(function (f) {
 
     t.end();
   });
+
   if (f.scheme !== 'DSA' && f.scheme.toLowerCase().indexOf('dsa') === -1) {
     test(f.message + ' named rsa through', function (t) {
       var scheme = 'RSA-' + f.scheme.toUpperCase();