Added integration test with keys generated by go nkeys (#2)

test/integration.ts

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2018 The NATS Authors
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import test from "ava";
+import {fromPublic, fromSeed} from "../src/nkeys";
+
+// this was generated using nkey api in go
+let data = {
+    "seed": "SAADQYV2GFYCKXPG5IG6BOPAIKQPFCQAIK3IIIIIQPXKIQUQTKJAFDPJH5E6MKWIT2QSCSC77YMJQP55BKKFKUC3YVWCTZQPIA2JEF2RJOBT4",
+    "public_key": "ADUT6SPGFLEJ5IJBJBP74GEYH66QVFCVKBN4K3BJ4YHUANESC5IUXPO7",
+    "nonce": "yaefGpCIUh-G35PertpItw==",
+    "sig": "n91875Rvbj7MOqo14a5JWBvJ7t5gjsoJmZayLZdX6KfOb-oLlgH2m1C43GpxmoYucgIRsWzMrDGX3wyPgWh8Cw=="
+};
+
+test('verify', async (t) => {
+    t.plan(2);
+    let pk = await fromPublic(data.public_key);
+    let ok = await pk.verify(Buffer.from(data.nonce), Buffer.from(data.sig, 'base64'));
+    t.true(ok);
+
+    let seed = await fromSeed(data.seed);
+    ok = await seed.verify(Buffer.from(data.nonce), Buffer.from(data.sig, 'base64'));
+    t.true(ok);
+});