Software Testing Services Provided To Automate Verification of Functional Equivalency
Software testing services are provided to run all types of tests in either manual or automated way – the choice depends on you.
It is quite possible to automate the entire testing process: from entry of input to a comparison of output. If the automation сan be done successfully, and you manage to automate the tests then they will be executed much faster and in the more effective and reliable way. Even if the comparison requires a lot of computer time, it is not a problem at all since you will be able to do other work in the meanwhile.
Although the automation of such tests is not a very complicated process, however, it requires some time. If the program can read input from a file, it is necessary to prepare this file. In addition, it is necessary to write small programs that perform a comparison of the results.
If both programs are focused on manual data entry, it will be more difficult to test them automatically. To emulate keyboard input it is possible to use a modem in some cases. One program sends data to another via modem, and the latter thinks that they have come from the keyboard. Despite some operational awkwardness, this method makes itself useful.
Of course, process of testing functional equivalence may involve some cost. First of all, a reliable reference program, which will be used for verification of the results, may appear to be expensive. Moreover, you will most likely have to write some programs. Besides, additional equipment may be necessary, such as a second computer. Without doubt, it is impossible to define universal criteria for measuring how much money should be spent on such testing. However, experts strongly advise you not to neglect carrying out this process without good reason.
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Estimate the number of days required for testing the program manually. The calculation should include time necessary for planning, performing calculations and testing. Do not forget that each test will be done more than once, because you will be involved in identifying errors and, consequently, you will have to repeat the testing procedure from the beginning. Think about how many test cycles will be required. There most likely will be five or six. (For comparison, you can choose an average number of cycles used by the company when testing the previous developments.)
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