My 1990 Honda Civic will turn over but not start. I do not have any spark to the plugs. The rotor and distributer cap have been replaced and still no spark.How can I test the ICM and coil for proper operation.

Call Auto Zone and see if the can test the coil.
The ignition goes to the coil, the coil goes to the distributor and the distributor goes to the plugs.
Good luck :)

Bench testing ICMs and coils is not very reliable. I recommend replacing these components every 120,000 miles or 10 years, whichever comes first. This link should help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-4.html#post265896