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metamask-extension/test/e2e/json-rpc/eth_chainId.spec.js

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const { strict: assert } = require('assert');
const { convertToHexValue, withFixtures } = require('../helpers');
const FixtureBuilder = require('../fixture-builder');
describe('eth_chainId', function () {
const ganacheOptions = {
accounts: [
{
secretKey:
'0x7C9529A67102755B7E6102D6D950AC5D5863C98713805CEC576B945B15B71EAC',
balance: convertToHexValue(25000000000000000000),
},
],
};
it('returns the chain ID of the current network', async function () {
await withFixtures(
{
dapp: true,
fixtures: new FixtureBuilder()
.withPermissionControllerConnectedToTestDapp()
.build(),
ganacheOptions,
title: this.test.title,
},
async ({ driver }) => {
await driver.navigate();
await driver.fill('#password', 'correct horse battery staple');
await driver.press('#password', driver.Key.ENTER);
// eth_chainId
await driver.openNewPage(`http://127.0.0.1:8080`);
const request = JSON.stringify({
jsonrpc: '2.0',
method: 'eth_chainId',
params: [],
id: 0,
});
const result = await driver.executeScript(
`return window.ethereum.request(${request})`,
);
assert.equal(result, '0x539');
},
);
});
});