In today’s world, technology is growing day by day very fast
and modern applications are built using emerging technologies in the market. Most of the modern applications have to
integrate with a variety of external services, database systems and APIs. On
top of that, they have to accommodate an ever-shifting landscape of devices and
browsers.
This is an area that is very difficult or even impossible to
test with traditional methods such as unit tests and simple mocks. A database
can fail, an external service can return an invalid result and a new browser
version might have introduced a simple bug that we didn’t know about when we
initially write out code.
This is where end-to-end testing comes into picture. We want
to test our application as a whole and make sure that it works as expected,
starting from user interface down to the subsystems.
As we know that, now-a-days most of the applications are
using AngularJS to develop the applications very fast, to get rich look and
feel. In order to test the such applications end-to-end, Google has released an
end-to-end testing framework called “Protractor”.
Salient Features of Protractor:
- Built on top of
WebdriverJS and Selenium Server
- Introduced very simple
syntax to write the tests
- We can use Selenium
GRID to run multiple browsers at a time
- Allows us to running
the tests targeting to remote address
Protractor is a wrapper around Selenium WebDriver, so
contains every feature available in the Selenium WebDriver. Additionally,
provided new locator strategy and functions which are very helpful to automate
AngularJS applications.
The main benefit of using Protractor is no need to add waits
or sleeps to your test. Protractor can communicate with AngularJS application
automatically and execute the next step in your test the moment the webpage
finishes pending tasks, so don’t have to worry about waiting for your test and
webpage to sync.
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