Mock Connection tests

web3.js/.eslintignore

@@ -1,3 +1,4 @@
 /doc
 /flow-typed
 /lib
+/coverage

web3.js/src/connection.js

@@ -54,6 +54,7 @@ function createRpcRequest(url): RpcRequest {
   };
 }
 
+
 /**
  * Expected JSON RPC response for the "getBalance" message
  */
@@ -237,9 +238,9 @@ export class Connection {
       // TODO: This is not the correct transaction payload
       `Transaction ${from.publicKey} ${to} ${amount}`
     );
+
     const signedTransaction = nacl.sign.detached(transaction, from.secretKey);
-    console.log(typeof signedTransaction);
-    console.log([...signedTransaction]);
+
     const unsafeRes = await this._rpcRequest('sendTransaction', [[...signedTransaction]]);
     const res = SendTokensRpcResult(unsafeRes);
     if (res.error) {

web3.js/test/__mocks__/node-fetch.js

@@ -0,0 +1,64 @@
+// @flow
+
+type RpcRequest = {
+  method: string;
+  params: Array<any>;
+};
+
+type RpcResponseError = {
+  message: string;
+}
+type RpcResponseResult = boolean | string | number;
+type RpcResponse = {
+  error: ?RpcResponseError;
+  result: ?RpcResponseResult;
+};
+
+export const mockRpc: Array<[string, RpcRequest, RpcResponse]> = [];
+
+const mock: JestMockFn<any, any> = jest.fn(
+  (fetchUrl, fetchOptions) => {
+    expect(mockRpc.length).toBeGreaterThanOrEqual(1);
+    const [mockUrl, mockRequest, mockResponse] = mockRpc.shift();
+
+    expect(fetchUrl).toBe(mockUrl);
+    expect(fetchOptions).toMatchObject({
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json'
+      },
+    });
+    expect(fetchOptions.body).toBeDefined();
+
+    const body = JSON.parse(fetchOptions.body);
+    expect(body).toMatchObject(Object.assign(
+      {},
+      {
+        jsonrpc: '2.0',
+        method: 'invalid',
+        params: ['invalid', 'params'],
+      },
+      mockRequest
+    ));
+
+    const response = Object.assign(
+      {},
+      {
+        jsonrpc: '2.0',
+        id: body.id,
+        error: {
+          message: 'invalid error message',
+        },
+        result: 'invalid response',
+      },
+      mockResponse,
+    );
+    return {
+      text: () => {
+        return Promise.resolve(JSON.stringify(response));
+      },
+    };
+  }
+);
+
+export default mock;

web3.js/test/connection.test.js

@@ -1,66 +1,204 @@
 // @flow
+
 import {Connection} from '../src/connection';
 import {Account} from '../src/account';
+import {mockRpc} from './__mocks__/node-fetch';
 
+const url = 'http://master.testnet.solana.com:8899';
 
-const url = 'http://localhost:8899';
-//const url = 'http://master.testnet.solana.com:8899';
+// Define DOITLIVE in the environment to test against the real full node
+// identified by `url` instead of using the mock
+if (process.env.DOITLIVE) {
+  console.log(`Note: node-fetch mock is disabled, testing live against ${url}`);
+} else {
+  jest.mock('node-fetch');
+}
 
-test.skip('get balance', async () => {
+test('get balance', async () => {
   const account = new Account();
   const connection = new Connection(url);
 
+  mockRpc.push([
+    url,
+    {
+      method: 'getBalance',
+      params: [account.publicKey],
+    },
+    {
+      error: null,
+      result: 0,
+    }
+  ]);
+
   const balance = await connection.getBalance(account.publicKey);
   expect(balance).toBeGreaterThanOrEqual(0);
 });
 
-test.skip('throws on bad transaction confirmation', () => {
+test('throws on bad transaction confirmation', () => {
   const connection = new Connection(url);
 
-  expect(connection.confirmTransaction('bad transaction signature'))
-  .rejects.toThrow('Invalid request');
+  const badTransactionSignature = 'bad transaction signature';
+  const errorMessage = 'Invalid request';
+
+  mockRpc.push([
+    url,
+    {
+      method: 'confirmTransaction',
+      params: [badTransactionSignature],
+    },
+    {
+      error: {
+        message: errorMessage,
+      },
+      result: undefined,
+    }
+  ]
+  );
+
+  expect(connection.confirmTransaction(badTransactionSignature))
+  .rejects.toThrow(errorMessage);
 });
 
-test.skip('get transaction count', async () => {
+test('get transaction count', async () => {
   const connection = new Connection(url);
 
+  mockRpc.push([
+    url,
+    {
+      method: 'getTransactionCount',
+      params: [],
+    },
+    {
+      error: null,
+      result: 1000000,
+    }
+  ]
+  );
+
   const count = await connection.getTransactionCount();
   expect(count).toBeGreaterThanOrEqual(0);
 });
 
-test.skip('get last Id', async () => {
+test('get last Id', async () => {
   const connection = new Connection(url);
 
+  mockRpc.push([
+    url,
+    {
+      method: 'getLastId',
+      params: [],
+    },
+    {
+      error: null,
+      result: '1111111111111111111111111111111111111111111111',
+    }
+  ]
+  );
+
   const lastId = await connection.getLastId();
   expect(lastId.length).toBeGreaterThanOrEqual(43);
 });
 
-test.skip('get finality', async () => {
+test('get finality', async () => {
   const connection = new Connection(url);
 
+  mockRpc.push([
+    url,
+    {
+      method: 'getFinality',
+      params: [],
+    },
+    {
+      error: null,
+      result: 123,
+    }
+  ]
+  );
+
   const finality = await connection.getFinality();
   expect(finality).toBeGreaterThanOrEqual(0);
 });
 
-test.skip('request airdrop', async () => {
+test('request airdrop', async () => {
   const account = new Account();
   const connection = new Connection(url);
 
-  await Promise.all([
-    connection.requestAirdrop(account.publicKey, 40),
-    connection.requestAirdrop(account.publicKey, 2),
+  mockRpc.push([
+    url,
+    {
+      method: 'requestAirdrop',
+      params: [account.publicKey, 40],
+    },
+    {
+      error: null,
+      result: true,
+    }
   ]);
+  mockRpc.push([
+    url,
+    {
+      method: 'requestAirdrop',
+      params: [account.publicKey, 2],
+    },
+    {
+      error: null,
+      result: true,
+    }
+  ]);
+  mockRpc.push([
+    url,
+    {
+      method: 'getBalance',
+      params: [account.publicKey],
+    },
+    {
+      error: null,
+      result: 42,
+    }
+  ]);
+
+  await connection.requestAirdrop(account.publicKey, 40);
+  await connection.requestAirdrop(account.publicKey, 2);
 
   const balance = await connection.getBalance(account.publicKey);
   expect(balance).toBe(42);
 });
 
-test.skip('throws on bad transaction', () => {
-  const account = new Account();
+test('throws on bad transaction', () => {
+  const secretKey = Buffer.from([
+    153, 218, 149, 89, 225, 94, 145, 62, 233, 171, 46, 83, 227,
+    223, 173, 87, 93, 163, 59, 73, 190, 17, 37, 187, 146, 46, 51,
+    73, 79, 73, 136, 40, 27, 47, 73, 9, 110, 62, 93, 189, 15, 207,
+    169, 192, 192, 205, 146, 217, 171, 59, 33, 84, 75, 52, 213, 221,
+    74, 101, 217, 139, 135, 139, 153, 34
+  ]);
+  const account = new Account(secretKey);
   const connection = new Connection(url);
 
+  const errorMessage = 'Invalid request';
+  mockRpc.push([
+    url,
+    {
+      method: 'sendTransaction',
+      params: [[
+        78, 52, 48, 146, 162, 213, 83, 169, 128, 10, 82, 26, 145, 238,
+        1, 130, 16, 44, 249, 99, 121, 55, 217, 72, 77, 41, 73, 227, 5,
+        15, 125, 212, 186, 157, 182, 100, 232, 232, 39, 84, 5, 121, 172,
+        137, 177, 248, 188, 224, 196, 102, 204, 43, 128, 243, 170, 157,
+        134, 216, 209, 8, 211, 209, 44, 1
+      ]],
+    },
+    {
+      error: {
+        message: errorMessage,
+      },
+      result: undefined,
+    }
+  ]);
+
+
   expect(connection.sendTokens(account, account.publicKey, 123))
-  .rejects.toThrow('Invalid request');
+  .rejects.toThrow(errorMessage);
 });