Total number of generated Test Cases

[MAGeorg]

Is it possible to know in advance how many Test Cases will be generated during testing?

[SR4ven]

Yes, you can use Session.num_mutations(1) to get the number of test cases with a depth of 1. The depth has to be consistent with the one handed to Session.fuzz(1).

Without a depth of 1, combinatorial fuzzing is activated and the number of test cases can not be calculated easily.

[MAGeorg]

Thanks for your reply. I'm new to using boofuzz and found the mentioned function but didn't quite understand the purpose of the depth parameter. Let me want to form a package consisting of three blocks: s_byte, s_word, s_random. With the parameter depth=1 in fuzzing, will all blocks change or only the first one will change, while the other two will take the default value?

[SR4ven]

Sorry for the long delay.
The depth parameter is part of the combinatorial fuzzing. It sets the depth of the combinatorial tree for the test case generation.
With a depth of 1 all primitives will be fuzzed one after another. The primitives that are currently not being touched will render with their default value.
With a depth greater than one, multiple primitives will be fuzzed at the same time. The greater the depth, the more fuzzed primitives will be combined in a test case. This also leads to many more possible test cases, so with the maximum combinatorial depth you can generate an almost infinite amount of cases.
I hope that helps.

[MAGeorg]

Thank you very much for your reply, it helped me figure it out.

[cottesenLM]

There is also, session.total_num_mutations which i use in callbacks for cheap progress bar functionality.

[MAGeorg]

Thanks, but I meant counting the number of Test Cases in advance)