DeepArmor is signature-free. It does not alert on the EICAR test virus as no real malware incorporates their signature (i.e., they do not wish to be caught because of the EICAR signature).
The EICAR test virus is not a virus (and contains no viral components) per the information provided by EICAR:
DeepArmor instead is "trained," using cognitive algorithms on hundreds of thousands of real malware samples and clean files, to predict, with some confidence interval, a newly encountered file as either "malware" or "benign".
As the EICAR test virus is ultimately a benign Windows portable executable, DeepArmor will not alert against it.