metamask-extension/test/e2e/tests/personal-sign.spec.js

const { strict: assert } = require('assert');
const { convertToHexValue, withFixtures, openDapp } = require('../helpers');
const FixtureBuilder = require('../fixture-builder');

describe('Personal sign', function () {
  it('can initiate and confirm a personal sign', async function () {
    const ganacheOptions = {
      accounts: [
        {
          secretKey:
            '0x7C9529A67102755B7E6102D6D950AC5D5863C98713805CEC576B945B15B71EAC',
          balance: convertToHexValue(25000000000000000000),
        },
      ],
    };
    await withFixtures(
      {
        dapp: true,
        fixtures: new FixtureBuilder()
          .withPermissionControllerConnectedToTestDapp()
          .build(),
        ganacheOptions,
        title: this.test.title,
      },
      async ({ driver, ganacheServer }) => {
        const addresses = await ganacheServer.getAccounts();
        const publicAddress = addresses[0];
        await driver.navigate();
        await driver.fill('#password', 'correct horse battery staple');
        await driver.press('#password', driver.Key.ENTER);

        await openDapp(driver);
        await driver.clickElement('#personalSign');

        await driver.waitUntilXWindowHandles(3);
        let windowHandles = await driver.getAllWindowHandles();
        await driver.switchToWindowWithTitle(
          'MetaMask Notification',
          windowHandles,
        );

        const personalMessageRow = await driver.findElement(
          '.request-signature__row-value',
        );
        const personalMessage = await personalMessageRow.getText();
        assert.equal(personalMessage, 'Example `personal_sign` message');

        await driver.clickElement('[data-testid="page-container-footer-next"]');

        // Switch to the Dapp
        await driver.waitUntilXWindowHandles(2);
        windowHandles = await driver.getAllWindowHandles();
        await driver.switchToWindowWithTitle('E2E Test Dapp', windowHandles);

        // Verify
        await driver.clickElement('#personalSignVerify');
        const verifySigUtil = await driver.findElement(
          '#personalSignVerifySigUtilResult',
        );
        const verifyECRecover = await driver.waitForSelector({
          css: '#personalSignVerifyECRecoverResult',
          text: publicAddress,
        });
        assert.equal(await verifySigUtil.getText(), publicAddress);
        assert.equal(await verifyECRecover.getText(), publicAddress);
      },
    );
  });
});