testRandInt
Get a reproducible random integer number.
The random numbers generated by the g_test_rand_*() family of functions change with every new test program start, unless the --seed option is given when starting test programs.
For individual test cases however, the random number generator is reseeded, to avoid dependencies between tests and to make --seed effective for all test cases.
Return
a random number from the seeded random number generator.
Since
2.16