Test Smell: it is not a good practice to introduce nondeterministic randomness in test code

[TestSmell]

Hi!

We notice that the random number generator (RNG) is used to produce test code in your project.
For example, a random generator in the test method named ''testInvalidTransaction() '' in ''PendingStateTest.java''

But generating random data in test code is not a good test practice. Since Using randomized data may lead to unexpected unit test failure and once the test case fails, it is hard to trace what test data causes it.

Solution:
There are two solutions:

1. set a random seed number for your random generator
2. using a hash method to generate random data

[scdoeco]

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