feat: validator info deserialization (#403)

web3.js/test/validator-info.test.js

@@ -0,0 +1,36 @@
+// @flow
+import nacl from 'tweetnacl';
+
+import {PublicKey} from '../src/publickey';
+import {ValidatorInfo} from '../src/validator-info';
+
+test('from config account data', () => {
+  const keypair = nacl.sign.keyPair.fromSeed(
+    Uint8Array.from(Array(32).fill(8)),
+  );
+
+  const expectedValidatorInfo = new ValidatorInfo(
+    new PublicKey(keypair.publicKey),
+    {
+      name: 'Validator',
+      keybaseId: 'validator_id',
+    },
+  );
+
+  // Config data string steps:
+  // 1) Generate a keypair
+  // 2) Airdrop lamports to the account
+  // 3) Modify the `solana-validator-info` tool
+  //   a) Remove the keybase id verification step
+  //   b) Print base64 account data in the `get --all` codepath
+  //   c) Add `println!("Account data: {:?}", base64::encode(&account.data));`
+  // 4) Use modified `solana-validator-info` tool to publish validator info
+  // 5) And then use it again to fetch the data! (feel free to trim some A's)
+  const configData = Buffer.from(
+    'AgdRlwF0SPKsXcI8nrx6x4wKJyV6xhRFjeCk8W+AAAAAABOY9ixtGkV8UbpqS189vS9p/KkyFiGNyJl+QWvRfZPKAS8AAAAAAAAAeyJrZXliYXNlSWQiOiJ2YWxpZGF0b3JfaWQiLCJuYW1lIjoiVmFsaWRhdG9yIn0',
+    'base64',
+  );
+  const info = ValidatorInfo.fromConfigData(configData);
+
+  expect(info).toEqual(expectedValidatorInfo);
+});