PAL Session 18

1
PAL Session 18

• Session Overview
• Testing your website
• XHTML 1.0

2
Testing types

• Unit testing
• Testing and verifying program units
• Integration testing
• Verifying the integration and interfaces between
  program units
• Regression testing
• Ensuring changes made do not affect other parts
  of the system
• Systems testing
• Ensuring the system meets its objectives
• Acceptance testing
• Making sure the system meets the user
  requirements

3
Testing methods

• Black box testing
• Adding and input and making sure the system gives
  the corresponding output
• Does not require knowledge of the system code
• White box testing
• Analysing the code to make sure the program does
  what it is supposed to do
• Requires intimate knowledge of the system code

4
Testing your website

• On all pages
• Check links do they all work?
• Click everything clickable, does the right thing
  happen?
• Navigation links/buttons do you end up where
  you were supposed to?
• Images do they all appear and appear correctly?
• Animations do they work correctly and at the
  correct speed?
• Dead ends do you have any pages that cause the
  user to get lost, or become unable to navigate to
  other areas of the site?

5
Testing your website

• On forms
• Use clear buttons
• All forms should have a cancel button, that allow
  the user to start again
• Error messages should occur when the user does
  something wrong/misses out information
• Putting in the wrong type of data
• Missing out information
• Submitting a blank form
• Test zero values
• Test very large values
• Emailing does it work correctly (you may need
  to set up your email details)

6
Testing strategy
7
Unbiased testing

• Its a good idea to get someone not involved with
  the project to use and try to break your website.
• This method may indicate bugs you may have
  missed, due to familiarity with the site/code
  etc.
• This is the concept of beta testing

8
Exercise

• Breaking your website

9
XHTML

• You can try writing your pages in XHTML the
  newer version of HTML
• XHTML is essentially the same as HTML it is
  just much cleaner and stricter
• Declare as XHTML
• lt?xml version"1.0" encoding"UTF-8"gt
• Include a DTD
• lt!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
  Strict//EN "DTD/xhtml1-transitional.dtd"gt
• Keep the HTML tag
• lthtml mlns"http//www.w3.org/1999/xhtml"
  xmllang"en" lang"en"gt
• Some tags are now deprecated
• ltigt ltbgt ltugt ltfontgt

10
XHTML continued

• Tags remain the same as in HTML
• ltimggt ltagt lth1gt etc
• All tags MUST be in lower case
• ltimggt ltagt lth1gt
• All tags MUST be closed or self closed
• lth1gtHellolt/h1gt ltbr /gt
• All tags MUST be properly nested
• ltpgtlth1gtltstronggtHellolt/stronggtlt/h1gtlt/pgt
• All attributes MUST be quoted
• ltimg srcpic.gif altpicturegt

11
Summary

• Make sure you test all aspects of your site as
  fully as you can
• Create a test strategy (see slide 6) so you dont
  miss anything
• Ask someone to play with your website, and
  ultimately try to break it. This may uncover
  errors you may have missed
• For more on XHTML, see http//www.w3schools.com/xh
  tml/