test run is too random

[amastrobera]

In many cases tests fail, because of an approximation error. The numbers for each test are generated randomly with something like

int IMin = -10;
int IMax = 10;
var p0 = new Point3D(seed.Next(IMin, IMax), seed.Next(IMin, IMax), seed.Next(IMin, IMax));

The result is: many times 1-2 out of 100 test runs fail.

In the deail we see

And

What solutions we have ?

a) we could save a serialized set of data points, that we can manually modify, and load on each test

b) save the seed of a successful test run and re use it several times. Here is a post that talks about it and more about the constructor of Random