diff --git a/tests/reciprocate.js b/tests/reciprocate.js
index f6b68bc..b412883 100644
--- a/tests/reciprocate.js
+++ b/tests/reciprocate.js
@@ -12,18 +12,80 @@ var refs = {
 , privJwk: RSA.exportPrivateJwk({ privateKeyPem: privkeyPemRef })
 };
 
+var hasUrsa;
+var imported;
+
+try {
+  hasUrsa = require('ursa') && true;
+} catch(e) {
+  hasUrsa = false;
+}
+
+
+
+//
+//
+// PEM tests
+//
+//
 console.log('');
-console.log('valid pem', privkeyPemRef === refs.privPem);
+console.log('JWK -> PEM ?', privkeyPemRef === refs.privPem);
 if (privkeyPemRef !== refs.privPem) {
-  console.log(privkeyPemRef);
-  console.log(refs.privPem);
+  // Watch out for tricky whitespaces (\n instead of \r\n, trailing \r\n, etc)
+  console.log('REF:');
+  console.log(JSON.stringify(privkeyPemRef));
+  console.log('GEN:');
+  console.log(JSON.stringify(refs.privPem));
+  throw new Error("Failed to validate importedJwk against referencePem");
 }
 
 console.log('');
-console.log('valid jwk', privkeyJwkRef.n === refs.privJwk.n);
+console.log('PEM -> _ -> PEM ?', privkeyPemRef === refs.privPem);
+if (hasUrsa) {
+  imported = RSA.import({ privateKeyPem: privkeyPemRef });
+  refs.privPem2 = RSA.exportPrivatePem({ _ursa: imported._ursa });
+}
+else {
+  imported = RSA.import({ privateKeyPem: privkeyPemRef });
+  refs.privPem2 = RSA.exportPrivatePem({ _forge: imported._forge });
+}
+if (privkeyPemRef !== refs.privPem2) {
+  console.log('REF:');
+  console.log(JSON.stringify(privkeyPemRef));
+  console.log('GEN:');
+  console.log(JSON.stringify(refs.privPem2));
+  throw new Error("Failed to validate importedPem against referencePem");
+}
+
+console.log('');
+
+
+
+//
+//
+// JWK tests
+//
+//
+console.log('');
+console.log('PEM -> JWK', privkeyJwkRef.n === refs.privJwk.n);
 if (privkeyJwkRef.n !== refs.privJwk.n) {
+  console.log('REF:');
   console.log(privkeyJwkRef);
+  console.log('GEN:');
   console.log(refs.privJwk);
+  throw new Error("Failed to validate importedPem against referenceJwk");
+}
+
+console.log('');
+console.log('JWK -> _ -> JWK', privkeyJwkRef.n === refs.privJwk2.n);
+imported = RSA.import({ privateKeyJwk: privkeyJwkRef });
+refs.privJwk2 = RSA.exportPrivateJwk({ _forge: imported._forge });
+if (privkeyJwkRef.n !== refs.privJwk2.n) {
+  console.log('REF:');
+  console.log(privkeyJwkRef);
+  console.log('GEN:');
+  console.log(refs.privJwk2);
+  throw new Error("Failed to validate importedJwk against referenceJwk");
 }
 
 console.log('');