Nightmare

Extends Helper

Nightmare helper wraps Nightmare library to provide fastest headless testing using Electron engine. Unlike Selenium-based drivers this uses Chromium-based browser with Electron with lots of client side scripts, thus should be less stable and less trusted.

Requires nightmare package to be installed.

Configuration

This helper should be configured in codecept.json or codecept.conf.js

Parameters

_locate

Locate elements by different locator types, including strict locator. Should be used in custom helpers.

This method return promise with array of IDs of found elements. Actual elements can be accessed inside evaluate by using codeceptjs.fetchElement() client-side function:

// get an inner text of an element

let browser = this.helpers['Nightmare'].browser;
let value = this.helpers['Nightmare']._locate({name: 'password'}).then(function(els) {
  return browser.evaluate(function(el) {
    return codeceptjs.fetchElement(el).value;
  }, els[0]);
});

Parameters

amOnPage

Opens a web page in a browser. Requires relative or absolute url. If url starts with /, opens a web page of a site defined in url config parameter.

I.amOnPage('/'); // opens main page of website
I.amOnPage('https://github.com'); // opens github
I.amOnPage('/login'); // opens a login page

Parameters

appendField

Appends text to a input field or textarea. Field is located by name, label, CSS or XPath

I.appendField('#myTextField', 'appended');

Parameters

attachFile

Attaches a file to element located by label, name, CSS or XPath Path to file is relative current codecept directory (where codecept.json or codecept.conf.js is located). File will be uploaded to remote system (if tests are running remotely).

I.attachFile('Avatar', 'data/avatar.jpg');
I.attachFile('form input[name=avatar]', 'data/avatar.jpg');

Parameters

checkOption

Selects a checkbox or radio button. Element is located by label or name or CSS or XPath.

The second parameter is a context (CSS or XPath locator) to narrow the search.

I.checkOption('#agree');
I.checkOption('I Agree to Terms and Conditions');
I.checkOption('agree', '//form');

Parameters

clearCookie

Clears a cookie by name, if none provided clears all cookies.

I.clearCookie();
I.clearCookie('test');

Parameters

clearField

Clears a <textarea> or text <input> element's value.

I.clearField('Email');
I.clearField('user[email]');
I.clearField('#email');

Parameters

click

Perform a click on a link or a button, given by a locator. If a fuzzy locator is given, the page will be searched for a button, link, or image matching the locator string. For buttons, the "value" attribute, "name" attribute, and inner text are searched. For links, the link text is searched. For images, the "alt" attribute and inner text of any parent links are searched.

The second parameter is a context (CSS or XPath locator) to narrow the search.

// simple link
I.click('Logout');
// button of form
I.click('Submit');
// CSS button
I.click('#form input[type=submit]');
// XPath
I.click('//form/*[@type=submit]');
// link in context
I.click('Logout', '#nav');
// using strict locator
I.click({css: 'nav a.login'});

Parameters

dontSee

Opposite to see. Checks that a text is not present on a page. Use context parameter to narrow down the search.

I.dontSee('Login'); // assume we are already logged in

Parameters

dontSeeCheckboxIsChecked

Verifies that the specified checkbox is not checked.

Parameters

dontSeeCookie

Checks that cookie with given name does not exist.

Parameters

dontSeeCurrentUrlEquals

Checks that current url is not equal to provided one. If a relative url provided, a configured url will be prepended to it.

Parameters

dontSeeElement

Opposite to seeElement. Checks that element is not visible (or in DOM)

Parameters

dontSeeElementInDOM

Opposite to seeElementInDOM. Checks that element is not on page.

Parameters

dontSeeInCurrentUrl

Checks that current url does not contain a provided fragment.

Parameters

dontSeeInField

Checks that value of input field or textare doesn't equal to given value Opposite to seeInField.

Parameters

dontSeeInSource

Checks that the current page contains the given string in its raw source code.

Parameters

dontSeeInTitle

Checks that title does not contain text.

Parameters

doubleClick

Performs a double-click on an element matched by link|button|label|CSS or XPath. Context can be specified as second parameter to narrow search.

I.doubleClick('Edit');
I.doubleClick('Edit', '.actions');
I.doubleClick({css: 'button.accept'});
I.doubleClick('.btn.edit');

Parameters

executeAsyncScript

Executes async script on page. Provided function should execute a passed callback (as first argument) to signal it is finished.

Example: In Vue.js to make components completely rendered we are waiting for nextTick.

I.executeAsyncScript(function(done) {
Vue.nextTick(done); // waiting for next tick
});

By passing value to done() function you can return values. Additional arguments can be passed as well, while done function is always last parameter in arguments list.

let val = await I.executeAsyncScript(function(url, done) {
// in browser context
$.ajax(url, { success: (data) => done(data); }
}, 'http://ajax.callback.url/');

Parameters

executeScript

Executes sync script on a page. Pass arguments to function as additional parameters. Will return execution result to a test. In this case you should use async function and await to receive results.

Example with jQuery DatePicker:

// change date of jQuery DatePicker
I.executeScript(function() {
// now we are inside browser context
$('date').datetimepicker('setDate', new Date());
});

Can return values. Don't forget to use await to get them.

let date = await I.executeScript(function(el) {
// only basic types can be returned
return $(el).datetimepicker('getDate').toString();
}, '#date'); // passing jquery selector

Parameters

fillField

Fills a text field or textarea, after clearing its value, with the given string. Field is located by name, label, CSS, or XPath.

// by label
I.fillField('Email', 'hello@world.com');
// by name
I.fillField('password', '123456');
// by CSS
I.fillField('form#login input[name=username]', 'John');
// or by strict locator
I.fillField({css: 'form#login input[name=username]'}, 'John');

Parameters

grabAttributeFrom

Retrieves an attribute from an element located by CSS or XPath and returns it to test. Resumes test execution, so should be used inside async with await operator.

let hint = await I.grabAttributeFrom('#tooltip', 'title');

Parameters

grabCookie

Gets a cookie object by name. If none provided gets all cookies. Resumes test execution, so should be used inside async with await operator.

let cookie = await I.grabCookie('auth');
assert(cookie.value, '123456');

Parameters

grabCurrentUrl

Get current URL from browser. Resumes test execution, so should be used inside an async function.

let url = await I.grabCurrentUrl();
console.log(`Current URL is [${url}]`);

grabHAR

Get HAR

let har = await I.grabHAR();
fs.writeFileSync('sample.har', JSON.stringify({log: har}));

grabNumberOfVisibleElements

Grab number of visible elements by locator.

I.grabNumberOfVisibleElements('p');

Parameters

grabPageScrollPosition

Retrieves a page scroll position and returns it to test. Resumes test execution, so should be used inside an async function with await operator.

let { x, y } = await I.grabPageScrollPosition();

grabTextFrom

Retrieves a text from an element located by CSS or XPath and returns it to test. Resumes test execution, so should be used inside async with await operator.

let pin = await I.grabTextFrom('#pin');

If multiple elements found returns an array of texts.

Parameters

grabTitle

Retrieves a page title and returns it to test. Resumes test execution, so should be used inside async with await operator.

let title = await I.grabTitle();

grabValueFrom

Retrieves a value from a form element located by CSS or XPath and returns it to test. Resumes test execution, so should be used inside async function with await operator.

let email = await I.grabValueFrom('input[name=email]');

Parameters

haveHeader

Add a header override for all HTTP requests. If header is undefined, the header overrides will be reset.

I.haveHeader('x-my-custom-header', 'some value');
I.haveHeader(); // clear headers

Parameters

moveCursorTo

Moves cursor to element matched by locator. Extra shift can be set with offsetX and offsetY options.

I.moveCursorTo('.tooltip');
I.moveCursorTo('#submit', 5,5);

Parameters

pressKey

Sends input event on a page. Can submit special keys like 'Enter', 'Backspace', etc

Parameters

refresh

Reload the page

refreshPage

Reload the current page.

`I.refreshPage();

resizeWindow

Resize the current window to provided width and height. First parameter can be set to maximize.

Parameters

saveScreenshot

Saves a screenshot to ouput folder (set in codecept.json or codecept.conf.js). Filename is relative to output folder. Optionally resize the window to the full available page scrollHeight and scrollWidth to capture the entire page by passing true in as the second argument.

I.saveScreenshot('debug.png');
I.saveScreenshot('debug.png', true) //resizes to available scrollHeight and scrollWidth before taking screenshot

Parameters

scrollPageToBottom

Scroll page to the bottom.

I.scrollPageToBottom();

scrollPageToTop

Scroll page to the top.

I.scrollPageToTop();

scrollTo

Scrolls to element matched by locator. Extra shift can be set with offsetX and offsetY options.

I.scrollTo('footer');
I.scrollTo('#submit', 5, 5);

Parameters

see

Checks that a page contains a visible text. Use context parameter to narrow down the search.

I.see('Welcome'); // text welcome on a page
I.see('Welcome', '.content'); // text inside .content div
I.see('Register', {css: 'form.register'}); // use strict locator

Parameters

seeCheckboxIsChecked

Verifies that the specified checkbox is checked.

I.seeCheckboxIsChecked('Agree');
I.seeCheckboxIsChecked('#agree'); // I suppose user agreed to terms
I.seeCheckboxIsChecked({css: '#signup_form input[type=checkbox]'});

Parameters

seeCookie

Checks that cookie with given name exists.

I.seeCookie('Auth');

Parameters

seeCurrentUrlEquals

Checks that current url is equal to provided one. If a relative url provided, a configured url will be prepended to it. So both examples will work:

I.seeCurrentUrlEquals('/register');
I.seeCurrentUrlEquals('http://my.site.com/register');

Parameters

seeElement

Checks that a given Element is visible Element is located by CSS or XPath.

I.seeElement('#modal');

Parameters

seeElementInDOM

Checks that a given Element is present in the DOM Element is located by CSS or XPath.

I.seeElementInDOM('#modal');

Parameters

seeInCurrentUrl

Checks that current url contains a provided fragment.

I.seeInCurrentUrl('/register'); // we are on registration page

Parameters

seeInField

Checks that the given input field or textarea equals to given value. For fuzzy locators, fields are matched by label text, the "name" attribute, CSS, and XPath.

I.seeInField('Username', 'davert');
I.seeInField({css: 'form textarea'},'Type your comment here');
I.seeInField('form input[type=hidden]','hidden_value');
I.seeInField('#searchform input','Search');

Parameters

seeInSource

Checks that the current page contains the given string in its raw source code.

I.seeInSource('<h1>Green eggs &amp; ham</h1>');

Parameters

seeInTitle

Checks that title contains text.

Parameters

seeNumberOfElements

asserts that an element appears a given number of times in the DOM Element is located by label or name or CSS or XPath.

I.seeNumberOfElements('#submitBtn', 1);

Parameters

seeNumberOfVisibleElements

Asserts that an element is visible a given number of times. Element is located by CSS or XPath.

I.seeNumberOfVisibleElements('.buttons', 3);

Parameters

selectOption

Selects an option in a drop-down select. Field is searched by label | name | CSS | XPath. Option is selected by visible text or by value.

I.selectOption('Choose Plan', 'Monthly'); // select by label
I.selectOption('subscription', 'Monthly'); // match option by text
I.selectOption('subscription', '0'); // or by value
I.selectOption('//form/select[@name=account]','Premium');
I.selectOption('form select[name=account]', 'Premium');
I.selectOption({css: 'form select[name=account]'}, 'Premium');

Provide an array for the second argument to select multiple options.

I.selectOption('Which OS do you use?', ['Android', 'iOS']);

Parameters

setCookie

Sets a cookie.

I.setCookie({name: 'auth', value: true});

Parameters

triggerMouseEvent

Sends input event on a page. Should be a mouse event like: { type: 'mouseDown', x: args.x, y: args.y, button: "left" }

Parameters

wait

Pauses execution for a number of seconds.

I.wait(2); // wait 2 secs

Parameters

waitForDetached

Waits for an element to become not attached to the DOM on a page (by default waits for 1sec). Element can be located by CSS or XPath.

I.waitForDetached('#popup');

Parameters

waitForElement

Waits for element to be present on page (by default waits for 1sec). Element can be located by CSS or XPath.

I.waitForElement('.btn.continue');
I.waitForElement('.btn.continue', 5); // wait for 5 secs

Parameters

waitForFunction

Waits for a function to return true (waits for 1 sec by default). Running in browser context.

I.waitForFunction(fn[, [args[, timeout]])

I.waitForFunction(() => window.requests == 0);
I.waitForFunction(() => window.requests == 0, 5); // waits for 5 sec
I.waitForFunction((count) => window.requests == count, [3], 5) // pass args and wait for 5 sec

Parameters

waitForInvisible

Waits for an element to be removed or become invisible on a page (by default waits for 1sec). Element can be located by CSS or XPath.

I.waitForInvisible('#popup');

Parameters

waitForText

Waits for a text to appear (by default waits for 1sec). Element can be located by CSS or XPath. Narrow down search results by providing context.

I.waitForText('Thank you, form has been submitted');
I.waitForText('Thank you, form has been submitted', 5, '#modal');

Parameters

waitForVisible

Waits for an element to become visible on a page (by default waits for 1sec). Element can be located by CSS or XPath.

I.waitForVisible('#popup');

Parameters

waitToHide

Waits for an element to hide (by default waits for 1sec). Element can be located by CSS or XPath.

I.waitToHide('#popup');

Parameters