modified test

Author: buffalojoec

packages/rpc-core/src/rpc-methods/__tests__/get-genesis-hash-test.ts

@@ -1,41 +1,32 @@
-import { Base58EncodedAddress } from '@solana/addresses';
 import { createHttpTransport, createJsonRpc } from '@solana/rpc-transport';
 import type { Rpc } from '@solana/rpc-transport/dist/types/json-rpc-types';
+import fs from 'fs';
 import fetchMock from 'jest-fetch-mock-fork';
+import path from 'path';
 
 import { createSolanaRpcApi, SolanaRpcMethods } from '../index';
 
-// TODO: We may want to replace the higher clusters with just the local
-// validator, since this is within the live test suite anyhow.
-// Also, with further manipulation capabilities over the local validator,
-// we can explore error testing as well
-const genesisHashMap: [string, Base58EncodedAddress][] = [
-    ['https://api.devnet.solana.com', 'EtWTRABZaYq6iMfeYKouRu166VU2xqa1wcaWoxPkrZBG' as Base58EncodedAddress],
-    ['https://api.testnet.solana.com', '4uhcVJyU9pJkvQyS88uRDiswHXSCkY3zQawwpjk2NsNY' as Base58EncodedAddress],
-    ['https://api.mainnet-beta.solana.com', '5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d' as Base58EncodedAddress],
-];
+const logFilePath = path.resolve(__dirname, '../../../../../test-ledger/validator.log');
+const genesisHashPattern = /genesis hash: ([\d\w]{44})/;
 
 describe('getGenesisHash', () => {
     let rpc: Rpc<SolanaRpcMethods>;
-    const createRpcForTest = (url: string) => {
-        rpc = createJsonRpc<SolanaRpcMethods>({
-            api: createSolanaRpcApi(),
-            transport: createHttpTransport({ url }),
-        });
-    };
     beforeEach(() => {
         fetchMock.resetMocks();
         fetchMock.dontMock();
+        rpc = createJsonRpc<SolanaRpcMethods>({
+            api: createSolanaRpcApi(),
+            transport: createHttpTransport({ url: 'http://127.0.0.1:8899' }),
+        });
     });
 
-    genesisHashMap.forEach(([url, expectedGenesisHash]) => {
-        describe(`when sent to ${url}`, () => {
-            it(`returns ${expectedGenesisHash}`, async () => {
-                expect.assertions(1);
-                createRpcForTest(url);
-                const genesisHashPromise = rpc.getGenesisHash().send();
-                await expect(genesisHashPromise).resolves.toBe(expectedGenesisHash);
-            });
+    describe('when sent to a local validator', () => {
+        it('returns the genesis hash', async () => {
+            expect.assertions(1);
+            const logFile = fs.readFileSync(logFilePath, 'utf-8');
+            const expectedGenesisHash = logFile.match(genesisHashPattern)?.[1];
+            const genesisHashPromise = rpc.getGenesisHash().send();
+            await expect(genesisHashPromise).resolves.toBe(expectedGenesisHash);
         });
     });
 });