How to test Web Application

Web Testing:

While testing a web application you need to consider following Cases:

• Functionality Testing  
• Performance Testing
• Usability Testing
• Server Side Interface
• Client Side Compatibility
• Security

• Buffer over flow

Functionality:

In testing the functionality of the web sites the following should be tested

1. Links

• Internal Links
• External Links
• Mail Links
• Broken Links

2. Forms

• Field validation
• Error message for wrong input
• Optional and Mandatory fields

3. Database

* Testing will be done on the database integrity.

4. Cookies

* Testing will be done on the client system side, on the temporary Internet files. 

Performance:                        

Performance testing can be applied to understand the web site’s scalability, or to benchmark the performance in the environment of third party products such as servers and middleware for potential purchase.

1. Connection Speed:

Tested over various networks like Dial Up, ISDN etc

2. Load

• What is the no. of users per time?
• Check for peak loads and how system behaves
• Large amount of data accessed by user

3. Stress

• Continuous Load
• Performance of memory, CPU, file handling etc..

Usability:

Usability testing is the process by which the human-computer interaction characteristics of a system are measured, and weaknesses are identified for correction.

• Ease of learning

• Navigation

• Subjective user satisfaction

• General appearance

Server Side Interface:

In web testing the server side interface should be tested. This is done by verify that communication is done properly. Compatibility of server with software, hardware, network and database should be tested.

Client Side Compatibility:

The client side compatibility is also tested in various platforms, using various browsers etc.

Security:
The primary reason for testing the security of a web is to identify potential vulnerabilities and subsequently repair them.

• Network Scanning

• Vulnerability Scanning

• Password Cracking

• Log Review

• Integrity Checkers

• Virus Detection

Buffer over flow:

Buffer over flow occur when fields like state allows @, ^. % etc., and when data base allows the chars and int values. And also in source code.

Test types and Sample Test case

Test Types:
There are four testing types in software testing. They are:

Testing of function (functional testing)
Testing of software product characteristics (non-functional testing)
Testing of software structure/architecture (structural testing)
Testing related to changes (confirmation and regression testing)  
a) Testing of function (functional testing):Testing functionality can be done from two perspectives: requirements-based or business-process-based.
To Recall:Suitability, interoperability, security, accuracy,compliance and Security testing.
  
b) Testing of software product characteristics (non-functional testing): It consists of five sub-characteristics,they are as follows.,

• reliability, which is defined further into the sub-characteristics maturity (robustness), fault-tolerance, recoverability and compliance;

• usability, which is divided into the sub-characteristics understandability, learnability, operability, attractiveness and compliance;
• efficiency, which is divided into time behavior (performance), resource uti lization and compliance;
• maintainability, which consists of five sub-characteristics: analyzability, changeability, stability, testability and compliance;
• portability, which also consists of five sub-characteristics: adaptability, installability, co-existence, replaceability and compliance.

To Recall:Performance testing, load testing, stress testing, usability testing, maintainability testing, reliability testing and portability testing. 

c) Testing of software structure/architecture (structural testing):Structural testing is most often used as a way of measuring the thoroughness of testing through the coverage of a set of structural elements or coverage items. A system, system integration or acceptance testing test basis could be a business model or menu structure.
At component level, and to a lesser extent at component integration testing, there is good tool support to measure code coverage. Coverage measurement tools assess the percentage of executable elements (e.g. state-ments or decision outcomes) that have been exercised (i.e. covered) by a test suite. If coverage is not 100%, then additional tests may need to be written and run to cover those parts that have not yet been exercised. 
To Recall:Structural testing is often referred to as 'white-box' or 'glass-box'.

d) Testing related to changes (confirmation and regression testing)
To Recall:Confirmation testing (re-testing),Regression testing

Test Case Template:

Test case template gives basic idea of the columns in a testcase.The Template differs from company to company.But Testcase id,Test description,Expected result,Actual result,Test status(P/F) will be common in all testcase templates .

testcase id	test case name	test case desc	test steps			test case status	test status (P/F)	test prority	defect severity
			step	expected	actual

Testcase Sample:
Preconditions: Open any login page in the Web browser.

Test case id	Test case name	test case desc	test steps			test case status	test status (P/F)	test prority	defect severity
			step	expected	actual
Login01	Validate Login	To verify that Login name on login page must be greater than 3 characters	enter login name less than 3 chars (say a) and password and click Submit button	an error message “Login not less than 3 characters” must be displayed		design		high
			enter login name less than 3 chars (say ab) and password and click Submit button	an error message “Login not less than 3 characters” must be displayed		design		high
			enter login name  3 chars (say abc) and password and click Submit button	Login success full or an error message “Invalid Login or Password” must be displayed		design		high
Login02	Validate Login	To verify that Login name on login page should not be greater than 10 characters	enter login name greater than 10 chars (say abcdefghijk) and password and click Submit button	an error message “Login not greater than 10 characters” must be displayed		design		high
			enter login name less than 10 chars (say abcdef) and password and click Submit button	Login success full or an error message “Invalid Login or Password” must be displayed		design		high
Login03	Validate Login	To verify that Login name on login page    does not take special characters	enter login name starting with specail chars (!hello) password and click Submit button	an error message “Special chars not allowed in login” must be displayed		design		high
			enter login name ending with specail chars (hello$) password and click Submit button	an error message “Special chars not allowed in login” must be displayed		design		high
			enter login name  with specail chars in middle(he&^llo) password and click Submit button	an error message “Special chars not allowed in login” must be displayed		design		high
Pwd01	Validate Password	To verify that Password on login page must be greater than 6 characters	enter Password less than 6 chars (say a) and Login Name and click Submit button	an error message “Password not less than 6 characters” must be displayed		design		high
			enter Password  6 chars (say abcdef) and Login Name and click Submit button	Login success full or an error message “Invalid Login or Password” must be displayed		design		high
Pwd02	Validate Password	To verify that Password on login page must be less than 10 characters	enter Password greater than 10 chars (say a) and Login Name and click Submit button	an error message “Password not greater than 10 characters” must be displayed		design		high
			enter Password less than 10 chars (say abcdefghi) and Login Name and click Submit button	Login success full or an error message “Invalid Login or Password” must be displayed		design		high
Pwd03	Validate Password	To verify that Password on login page must be allow special characters	enter Password with special characters(say !@hi&*P) Login Name and click Submit button	Login success full or an error message “Invalid Login or Password” must be displayed		design		high
Llnk01	Verify Hyperlinks	To Verify the Hyper Links available at left side on login page working or not	Click Home Link	Home Page must be displayed		design		low
			Click Sign Up Link	Sign Up page must be displayed		design		low
			Click New Users Link	New Users Registration Form must be displayed		design		low
			Click Advertise Link	Page with Information and Tariff Plan for Advertisers must be displayed		design		low
			Click Contact Us Link	Contact Information page must be displayed		design		low
			Click Terms Link	Terms Of the service page must be displayed		design		low
Flnk01	Verify Hyper links	To Verify the Hyper Links displayed at Footer on login page working or not	Click Home  Link	Home Page must be displayed		design		low
			Click Sign Up  Link	Contact Information page must be displayed		design		low
			Click Contact Us  Link	Page with Information and Tariff Plan for Advertisers must be displayed		design		low
			Click Advertise Link	Terms Of the service page must be displayed		design		low
			Click Terms Of Membership Link	Privacy Policy page must be displayed		design		low
			Click Privacy Policy Link	Privacy Policy page must be displayed		design		low
Lblnk01	Verify Hyper links	To Verify the Hyper Links displayed at Login Box on login page working or not	Click NEW USERS Link located in login box	New Users Registration Form must be displayed		design		low
			Click New Users(Blue Color) Link located in login box	New Users Registration Form must be displayed		design		low
			Click Forget Password  Link located in login box	Password Retrieval Page must be displayed		design		medium