test: improve test output for accumulators
test: improve test output for accumulators

ahmedammar/platform_external_gst_liborc,ijsf/OpenWebRTC-orc,jpakkane/orc,MOXfiles/orc,MOXfiles/orc,ijsf/OpenWebRTC-orc,ahmedammar/platform_external_gst_liborc,ijsf/OpenWebRTC-orc,mojaves/orc,Distrotech/orc,Distrotech/orc,mojaves/orc,okuoku/nmosh-orc,okuoku/nmosh-orc,jpakkane/orc,jpakkane/orc,Distrotech/orc,MOXfiles/orc,mojaves/orc,okuoku/nmosh-orc