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AB postcode area region corresponding to Aberdeen for each of the follow-
ing 16 possibilities:
16 Search Possibilities: AB postcode
1. Date range
2. Date range and cause
3. Date range and time
4. Date range, cause, and time
5. Date range and number of persons
6. Date range, cause, and number of persons
7. Date range, time, and number of persons
8. Date range, time, number of persons, and cause
9. Date range and number of vehicles
10. Date range, cause, and number of vehicles
11. Date range, time, and number of vehicles
12. Date range, cause, time, and number of vehicles
13. Date range, number of persons, and number of vehicles
14. Date range, cause, number of persons, and number of vehicles
15. Date range, time, number of persons, and number of vehicles
16. Date range, cause, time, number of persons, and number of vehicles
We have selected such a narrow area and specific criteria because, as the
search criteria become more specific, it decreases the number of accident
locations in the result but requires more processing from the SQL Azure.
Then, each of these tasks has been carried out on the application with
known selected field values, and the output was compared with previously
known expected results. Any errors found were corrected in the code and
then all the tests were performed repeatedly until all the results met the
expected output.
7.5.1 Performance Testing
Performance testing is a key test as this application will arguably be run-
ning in a stressful environment and there will be a substantially large data-
base for the system. In some unlikely cases when a user searches for longer
date ranges, the result comprises thousands of records, potentially gigabytes
of data. Then, since search results are downloaded from SQL Azure into
the client, there is a possibility that the application can freeze or crash if
the Internet speed is slow or the Internet connection is fluctuating between
connected and disconnected states.
To perform stress testing, accidents in the AB postcode area have been
searched for a 10-year range between January 1, 2001, and September 30,
2011, and without any other condition. This has put the application under
extreme stress as in the normal case, producing 6,642 records for a single
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