Web Testing: Complete guide on testing web applications

Posted: 3 Mei 2011 in Lain-lain

In my previous post I have outlined points to be considered while testing web applications. Here we will see some more details on web application testing with web testing test cases.
Let me tell you one thing that I always like to share practical
knowledge, which can be useful to users in their career life. This is a
quite long article so sit back and get relaxed to get most out of it.

testing tools

testing tools

Let’s have first web testing checklist.
1) Functionality Testing
2) Usability testing
3) Interface testing
4) Compatibility testing
5) Performance testing
6) Security testing

1) Functionality Testing:

Test for – all the links in web pages, database connection, forms
used in the web pages for submitting or getting information from user,
Cookie testing.

Check all the links:

  • Test the outgoing links from all the pages from specific domain under test.
  • Test all internal links.
  • Test links jumping on the same pages.
  • Test links used to send the email to admin or other users from web pages.
  • Test to check if there are any orphan pages.
  • Lastly in link checking, check for broken links in all above-mentioned links.

Test forms in all pages:
Forms are the integral part of any web site. Forms are used to get
information from users and to keep interaction with them. So what should
be checked on these forms?

  • First check all the validations on each field.
  • Check for the default values of fields.
  • Wrong inputs to the fields in the forms.
  • Options to create forms if any, form delete, view or modify the forms.

Let’s take example of the search engine project currently I am
working on, In this project we have advertiser and affiliate signup
steps. Each sign up step is different but dependent on other steps. So
sign up flow should get executed correctly. There are different field
validations like email Ids, User financial info validations. All these
validations should get checked in manual or automated web testing.

Cookies testing:
Cookies are small files stored on user machine. These are basically used
to maintain the session mainly login sessions. Test the application by
enabling or disabling the cookies in your browser options. Test if the
cookies are encrypted before writing to user machine. If you are testing
the session cookies (i.e. cookies expire after the sessions ends) check
for login sessions and user stats after session end. Check effect on
application security by deleting the cookies. (I will soon write
separate article on cookie testing)

Validate your HTML/CSS:
If you are optimizing your site for Search engines then HTML/CSS
validation is very important. Mainly validate the site for HTML syntax
errors. Check if site is crawlable to different search engines.

Database testing:
Data consistency is very important in web application. Check for data
integrity and errors while you edit, delete, modify the forms or do any
DB related functionality.
Check if all the database queries are executing correctly, data is
retrieved correctly and also updated correctly. More on database testing
could be load on DB, we will address this in web load or performance
testing below.

2) Usability Testing:

Test for navigation:
Navigation means how the user surfs the web pages, different controls
like buttons, boxes or how user using the links on the pages to surf
different pages.
Usability testing includes:
Web site should be easy to use. Instructions should be provided clearly.
Check if the provided instructions are correct means whether they
satisfy purpose.
Main menu should be provided on each page. It should be consistent.

Content checking:
Content should be logical and easy to understand. Check for spelling
errors. Use of dark colors annoys users and should not be used in site
theme. You can follow some standards that are used for web page and
content building. These are common accepted standards like as I
mentioned above about annoying colors, fonts, frames etc.
Content should be meaningful. All the anchor text links should be
working properly. Images should be placed properly with proper sizes.
These are some basic standards that should be followed in web development. Your task is to validate all for UI testing

Other user information for user help:
Like search option, sitemap, help files etc. Sitemap should be present
with all the links in web sites with proper tree view of navigation.
Check for all links on the sitemap.
“Search in the site” option will help users to find content pages they
are looking for easily and quickly. These are all optional items and if
present should be validated.

3) Interface Testing:
The main interfaces are:
Web server and application server interface
Application server and Database server interface.

Check if all the interactions between these servers are executed
properly. Errors are handled properly. If database or web server returns
any error message for any query by application server then application
server should catch and display these error messages appropriately to
users. Check what happens if user interrupts any transaction in-between?
Check what happens if connection to web server is reset in between?

4) Compatibility Testing:
Compatibility of your web site is very important testing aspect. See which compatibility test to be executed:

  • Browser compatibility
  • Operating system compatibility
  • Mobile browsing
  • Printing options

Browser compatibility:
In my web-testing career I have experienced this as most influencing part on web site testing.
Some applications are very dependent on browsers. Different browsers
have different configurations and settings that your web page should be
compatible with. Your web site coding should be cross browser platform
compatible. If you are using java scripts or AJAX calls for UI
functionality, performing security checks or validations then give more
stress on browser compatibility testing of your web application.
Test web application on different browsers like Internet explorer,
Firefox, Netscape navigator, AOL, Safari, Opera browsers with different

OS compatibility:
Some functionality in your web application is may not be compatible with
all operating systems. All new technologies used in web development
like graphics designs, interface calls like different API’s may not be
available in all Operating Systems.
Test your web application on different operating systems like Windows, Unix, MAC, Linux, Solaris with different OS flavors.

Mobile browsing:
This is new technology age. So in future Mobile browsing will rock. Test
your web pages on mobile browsers. Compatibility issues may be there on

Printing options:
If you are giving page-printing options then make sure fonts, page
alignment, page graphics getting printed properly. Pages should be fit
to paper size or as per the size mentioned in printing option.

5) Performance testing:
Web application should sustain to heavy load. Web performance testing should include:
Web Load Testing
Web Stress Testing

Test application performance on different internet connection speed.
In web load testing test if many users are accessing or
requesting the same page. Can system sustain in peak load times? Site
should handle many simultaneous user requests, large input data from
users, Simultaneous connection to DB, heavy load on specific pages etc.

Stress testing: Generally stress means stretching
the system beyond its specification limits. Web stress testing is
performed to break the site by giving stress and checked how system
reacts to stress and how system recovers from crashes.
Stress is generally given on input fields, login and sign up areas.

In web performance testing web site functionality on different
operating systems, different hardware platforms is checked for software,
hardware memory leakage errors,

6) Security Testing:

Following are some test cases for web security testing:

  • Test by pasting internal url directly into browser address bar without login. Internal pages should not open.
  • If you are logged in using username and password and browsing
    internal pages then try changing url options directly. I.e. If you are
    checking some publisher site statistics with publisher site ID= 123. Try
    directly changing the url site ID parameter to different site ID which
    is not related to logged in user. Access should denied for this user to
    view others stats.
  • Try some invalid inputs in input fields like login username,
    password, input text boxes. Check the system reaction on all invalid
  • Web directories or files should not be accessible directly unless given download option.
  • Test the CAPTCHA for automates scripts logins.
  • Test if SSL is used for security measures. If used proper message
    should get displayed when user switch from non-secure http:// pages to
    secure https:// pages and vice versa.
  • All transactions, error messages, security breach attempts should get logged in log files somewhere on web server.

I think I have addressed all major web testing methods. I have worked for around 2 years out of my testing career
on web testing. There are some experts who have spent their whole
career life on web testing. If I missed out addressing some important
web testing aspect then let me know in comments below. I will keep on
updating the article for latest testing information.

sumber : http://www.softwaretestinghelp.com

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