IsolationMode

SingleInstance

A single instance of the Spec class is instantiated, and then used for every TestCase.

InstancePerTest

A new instance of the Spec class is instantiated for every TestCase - both containers and leaf tests - and they are executed once the previous test has completed.

InstancePerLeaf

A new instance of the Spec class is instantiated for every leaf TestCase. Container test cases are executed only as part of the path to a leaf test.