Add Connection class

web3.js/test/connection.test.js

@@ -0,0 +1,45 @@
+// @flow
+import {Connection} from '../src/connection';
+import {Account} from '../src/account';
+
+
+const url = 'http://localhost:8899';
+//const url = 'http://master.testnet.solana.com:8899';
+
+test.skip('get balance', async () => {
+  const account = new Account();
+  const connection = new Connection(url);
+
+  const balance = await connection.getBalance(account.publicKey);
+  expect(balance).toBeGreaterThanOrEqual(0);
+});
+
+test.skip('throws on bad transaction', () => {
+  const connection = new Connection(url);
+
+  expect(connection.confirmTransaction('bad transaction signature'))
+  .rejects.toThrow('Invalid request');
+});
+
+test.skip('get transaction count', async () => {
+  const connection = new Connection(url);
+
+  const count = await connection.getTransactionCount();
+  expect(count).toBeGreaterThanOrEqual(0);
+});
+
+test.skip('get last Id', async () => {
+  const connection = new Connection(url);
+
+  const lastId = await connection.getLastId();
+  expect(lastId.length).toBeGreaterThanOrEqual(43);
+});
+
+test.skip('get finality', async () => {
+  const connection = new Connection(url);
+
+  const finality = await connection.getFinality();
+  expect(finality).toBeGreaterThanOrEqual(0);
+});
+
+