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Informations about the package behat-laravel-js

Javascript Testing with Behat and Laravel

This is a companion package to Behat's Laravel Extension that provides utilities to work around some issues and limitations when testing Javascript applications using browser emulators, like Selenium, PhantomJS or Zombie.

The workarounds used in this package are heavily inspired by Laravel Dusk code. Read this post if you wish to have more context about the history of the issues.

Problems and workarounds

If you're here, you probably already know about the extension limitations, but in case you don't; read on.

tl;dr

Install, and use these three traits in your FeatureContext and you're done. Remember to not to use DatabaseTransactions and/or Migrator traits.

Environment

To alleviate this issue, you need to use the \Sepehr\BehatLaravelJs\Concerns\PreserveBehatEnvironment trait in your FeatureContext class.

Consider this example: Your testing environment is set to use SQLite as the database while your local/production environment use MySQL. When you run a @javascript Behat scenario, a browser emulator dispatches a request to your Laravel app endpoint. And to your surprise, it meets with another Laravel instance that is using the .env file. An instance operating in a different environment: different databases, cache drivers, queues, etc.

Database Transactions

To alleviate this one, you need to use Laracasts\Behat\Context\MigrateRefresh trait in your FeatureContext class instead of using DatabaseTransactions and Migrator traits.

The very popular DatabaseTransactions trait and its BLE counterpart, begin a transaction before a scenario. The transaction will be commited only if there are no exceptions. Then after the scenario, they will rollback it in order to keep the database state intact.

In middle of the process, when a browser emulator dispatches the request to another instance of Laravel, the transaction won't be commited and thus you will encounter unexpected results.

Consider a scenario, when you first insert a few test users into the database in the testing instance and in the next
step, you request a page (to the other instance) to see if their data exist on a page. To your surprise, the data you're looking for won't be available.

Instead, in order to maintain a clean database state, use the MigrateRefresh trait to refresh the database before each scenario.

Authentication

To alleviate this one, you should be using the \Sepehr\BehatLaravelJs\Concerns\AuthenticateUsers trait in your FeatureContext class. It will provide you with helper authentication methods to login, logout and get the current user data.

Authentication is another problem. In the testing environment you log a user into the system, then you tell Behat to fire a Selenium session and check a protected page. As you might already know, the user won't be logged-in. The testing browser has no authentication cookie to send to the other Laravel instance.

Available methods are:

Description Signature
Login as a user loginAs($user\|$userId, $guard\|null)
Logout logout($guard\|null)
Get current user's data currentUserInfo($guard\|null)
Assert that the user is authenticated assertAuthenticated($guard\|null)
Assert that the user is authenticated AS assertAuthenticatedAs($user, $guard\|null)
Assert that the user is NOT authenticated assertGuest($guard\|null)

Just as Dusk.

Installation

Install the package using composer:

Then, in your AppServiceProvider::boot(), register the package service provider for testing environments. Please note that it'd be a SECURITY RISK if you enable this in your production environment. See the package service provider to find out why.

All versions of behat-laravel-js with dependencies

PHP Build Version
Package Version
Requires laracasts/behat-laravel-extension Version dev-master
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