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Home Case studies Interoperability Testing


Optimizing testing for a DVB-S TV unit
 
 
The customer
A Korean set top box manufacturer
 
The challenge
The client needed to crash its test cycle time which was close to 7 days. The company’s existing test process had close to 2000 test cases. These test cases needed to be reduced and the overall test process needed to be optimized. The company’s existing test cases although large in number, were not effectively reporting all the bugs and were not able to help create complex bugs. Most of the tests were being executed manually and there was a need to identify the test cases that could be automated and introduce test automation to improve the efficiency of the testing process.
 
The solution

The company was looking for overall optimization of its test process which had become too large and inefficient and thus was not able to track and fix complex bugs. Wipro engineers studied and understood all the existing test cases and then used methods like Taguchi to reduce the number of test combinations while maintaining the test coverage. We then identified the tests that could be automated and created automated test cases using USB-UIRT / Girder, Shell and Perl scripts. Wipro thus set a platform for more efficient test case development with reduced test cycle time.

 
 
The benefits
Test Case Reduction to 10% of original number for antenna settings cases.
Reduced Test case creation time by more than 80% for different modules like PVR, Tuner and Antenna Selection.
Automation of Test execution increased productivity by more than 20%. This was seen while running performance tests.
Activities which used to take 6 hours crashed to 5 minutes.
Test cycle time reduced to 3 days from 7 days.
Improved overall quality.

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