Diagnosing Distributor - No Spark Chase

you can't bench-test a coil in the usual way.
You have to make and break the negative side very rapidly. What I do is use a long coarse file like a set of points. Just strip off a half inch of insulation off a wire and jumper the other end to the coil (-), and ground the file back to the power source. Then lightly caress the file with the bare wire. As the wire bounces from high point to high point, a good coil will issue a stream of sparks from the center tower, to the ground return, when near-grounded.