testing fee values (2x)

[igormcoelho]

Just a bunch of tests to enforce overprice calculation of transactions.

[igormcoelho]

Some people are confused with current pricing calculation, so I added five simple tests that demonstrate possible situations.

Examples are:

- LowPriority (network fee = 0.0001,  size = 1024) -> PASS
- LowPriority (network fee = 0.0001,  size = 1025) -> FAIL
- HighPriority (network fee = 0.001,  size = 1024) -> PASS  | oversize in bytes = 0B
- HighPriority (network fee = 0.001,  size = 1025) -> PASS  | oversize in bytes = (1025-1024=1)  *  0.00001  = 0.00001 <= 0.001 (paid network fee)
- HighPriority (network fee = 0.001,  size = 1124) -> PASS  | oversize in bytes = (1124-1024=100)  *  0.00001  = 0.001 <= 0.001 (paid network fee)
- HighPriority (network fee = 0.001,  size = 1125) -> FAIL  | oversize in bytes = (1125-1024=101)  *  0.00001  = 0.00101 > 0.001 (paid network fee is NOT enough)
- HighPriority (network fee = 0.00101,  size = 1125) -> PASS  | oversize in bytes = (1125-1024=101)  *  0.00001  = 0.00101 <= 0.00101 (paid network fee is enough)

[vncoelho]

Great job, Brother!

[vncoelho]

Great examples that will make comprehension quite clear!