Software Testing Service Providers Explain the Reasons of Unexpected Test Execution Results
It is worth knowing that if a test run yields unexpected results this may indicate the following:
- Unit (module) has an error;
- Test results were calculated incorrectly (by this is meant that the test had errors).
To eliminate problem of the kind you need to carefully check the set of tests (“to test” tests) to be run. Software testing service providers are always meticulous selecting test suite therefore each their test is completed successfully.
Let us refer to the main test as the test that checks the basic functionality of a given program. However, there is the danger that after the successful completion of basic tests, overjoyed, the testers may forget that they need to conduct further, more careful testing of the program and its components, one at a time, and, unfortunately, it usually becomes psychologically difficult to set oneself up for such work. That is why, besides running basic tests, one must use the following types of tests:
- Degenerate test. As a rule, this test does not verify the behavior of the program being debugged or, if it does, then it is rather a superficial examination. Usually the test is used to check whether or not the very external functions of the program are implemented properly, for instance, if it is that easy to call or exit a function of the program. Be informed, that performance testing companies run non-functional tests that focus on verifying stability, effectiveness, speed, reliability of the software app under a certain workload.
- High-low bias checking or stress test (Twin Check). This test checks how the program behaves with respect to the boundary parameter values that affect the calculation process. In most cases, the program has specific operating mode when it works for parameter values that are at the boundaries, and exactly this behavior needs to be carefully monitored. If we take testing of sorting subprogram as an example, it will be necessary to examine the following situations:
- sorted array is empty;
- sorted array contains only one element;
- all elements in the sorted array are identical;
- the array is already sorted.
Emergency test. As far as test is concerned, it actually checks how the program behaves under unfavorable conditions, e.g. unexpected problems arise while it is running. In particular, this can be due to incorrect input data, namely the test verifies diagnostic capabilities of the program, as well as its termination properties, or, perhaps, an attempt to fix incorrect input data (actual software developers know that the users are like Naughty kids playing with TV or tape recorder during the time when their parents are away). One should remember that saving the company money & time in the product development process becomes possible with outsource QA service.