sheerluck / ticket-31222

CAS integration tests from https://12000.org

https://trac.sagemath.org/ticket/31222

I want to thank Nasser M. Abbasi for https://trac.sagemath.org/attachment/ticket/31222/SAGE.zip

I want to thank T.J. Lahey for https://github.com/tjl/sage_int_testing

test #19 from 1.1.1.2-a+b_x-^m-c+d_x-^n.sage

$ sage ticket-31222.sage 1.1.1.2,19

all tests from 1.1.1.2-a+b_x-^m-c+d_x-^n.sage

$ sage ticket-31222.sage 1.1.1.2