sf-test-login.js

const ACCESSORS = {
    username: '#username',
    password: '#password',
    form: '#login_form'
};
const PAGE_LOAD_TIMEOUT = 10 * 1000;   // 10 seconds
await remote.URL("https://test.salesforce.com");
const form = await remote.$(ACCESSORS.form);
await form.waitForExist(PAGE_LOAD_TIMEOUT);
const usernameInput = await remote.$(ACCESSORS.username);
await usernameInput.setValue(<USERNAME>);
const passwordInput = await remote.$(ACCESSORS.password);
await passwordInput.setValue(<PASSOWRD>);
const loginButton = await remote.$('#Login');
await loginButton.click();
await remote.pause(5 * 1000);