(Quick Reference)
                create-unit-test-service
Purpose
The 
create-unit-test-service generates all the unit tests for a service.
Examples
grails create-unit-test-service Person
grails create-unit-test-service "*"
Description
Given at least one domain class, this command creates unit tests for a service. The command will generate the following files:
test/unit/{package}/{domainClass}ServiceListTests.groovy 
test/unit/{package}/{domainClass}ServiceListMaxTests.groovy 
test/unit/{package}/{domainClass}ServiceListOffsetTests.groovy 
test/unit/{package}/{domainClass}ServiceListSortOrderTests.groovy 
test/unit/{package}/{domainClass}ServiceCreateTests.groovy 
test/unit/{package}/{domainClass}ServiceUpdateTests.groovy 
test/unit/{package}/{domainClass}ServiceGetTests.groovy 
test/unit/{package}/{domainClass}ServiceDeleteTests.groovy 
Usage:
grails create-unit-test-service [domainClass]
Arguments:
domainClass - Either a domain class name (case-sensitive) without its package or a wildcard (*). If you specify the wildcard the artifacts will be generated for all domain classes.