It would be better if your facts do not have constructor arguments, but you can use the following workaround:
Create a rule that asserts your Fact with constructor arguments, and make sure it only works on test cases
when
MyBreadcrumbThatDefinesTestRuns()
then
MyFactWithConstructorArgs f = new MyFactWithConstructorArgs("arrgh")
insert(f)
end
now, you need to define a fact in your model named MyBreadcrumbThatDefinesTestRuns
and insert it into your session on the Given
section of the test definition.