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Non Functional Testing
Aim of Non Functional Testing:
Such tests are aimed to verify the non-functionality factors related to the customer expectations. Following testing techniques are employed to validate the various non-functionality factors.
1) Usability Test or User interface Testing:
To verify the user friendliness of the application is known as Usability Test, which is aimed to verify the following factors.
a) Adequacy of look and feel factors like back ground color, font size, spelling mistakes etc..
b) Adequacy of alignment of various controls.c) Ease of Navigation.
d) Meaning fullness of the Help document.
2) Performance Testing:
To verify the speed of the process for completing a transaction. Following performance testing techniques are employed here.
a) Load Testing or Scalability Testing:To verify that the application supports the customer expected load or not across the desired number of configured systems.
b) Stress Testing: Is aimed at estimating the peak limit of the load the application can handle. For such load testing & stress testing, automation tools like load runner etc. are deployed
c) Data volume testing: To verify the maximum storage capacity in the application database.
3) Security Testing:
To verify the privacy to the user operations. During security testing, major focus is laid on the following two factors.
a) Authorization: To verify as to whether the application is permitting the valid users & at the same time it should be preventing the invalid users.
b) Access Control: To verify as to whether the application is providing the right services to the valid users or not.
4) Recovery Testing or Reliability Testing:
To verify as to whether the application is able to return back to its normal state or not after the occurrence of some abnormal behavior with the help of the available recovery procedures. It involves estimation of the recovery time as well.
5) Compatibility Testing or Portability Testing:
To verify as to whether the application supports the customer expected operating systems, network environment, browsers etc. etc. In compatibility testing following two techniques are deployed.
a) Forward compatibility Testing: Is aimed to verify as to whether the application supports the future versions of operating systems or not.
b) Backward compatibility Testing: Is aimed to verify as to whether the application supports the older / previous versions of the operating systems or not.
6) Configuration Testing:
To verify that the application supports different technology hardware devices or not. e.g. The application is to be checked for printers based upon various technologies.
7) End to End Testing:
To verify as to how well the new software coexists with already existing software sharing common resources. This approach involves execution of all transaction right from the login session to the logout session.
8) Installation Testing:
This test is aimed to verify the following factors.
a) Availability of the License.
b) Whether all setup programs are working properly or not.
c) Availability of the required memory space.
9) Sanitation Testing:
This test is aimed to find out the presence of extra features in the application, although not specified in the client requirements.
10) Comparative Testing or Parallel Testing:
This test is aimed to understand the strengths & weaknesses of the application viz. A viz. similar product from the competitors of the market.
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