test-namespace: remove cmp reference, augment test suite
test-namespace: remove cmp reference, augment test suite

pabigot/pyxb,balanced/PyXB,CantemoInternal/pyxb,jonfoster/pyxb2,jonfoster/pyxb-upstream-mirror,jonfoster/pyxb2,pabigot/pyxb,balanced/PyXB,jonfoster/pyxb-upstream-mirror,CantemoInternal/pyxb,jonfoster/pyxb-upstream-mirror,balanced/PyXB,CantemoInternal/pyxb,jonfoster/pyxb2