tester

type WorkflowTester interface {
	// Now returns the current time of the simulated clock in the tester
	Now() time.Time

	Execute(args ...interface{})

	Registry() *workflow.Registry

	OnActivity(activity interface{}, args ...interface{}) *mock.Call

	OnSubWorkflow(workflow interface{}, args ...interface{}) *mock.Call

	SignalWorkflow(signalName string, value interface{})

	SignalWorkflowInstance(wfi *core.WorkflowInstance, signalName string, value interface{})

	WorkflowFinished() bool

	WorkflowResult(vtpr interface{}, err *string)

	// AssertExpectations asserts any assertions set up for mock activities and sub-workflow
	AssertExpectations(t *testing.T)

	// ScheduleCallback schedules the given callback after the given delay in workflow time (not wall clock).
	ScheduleCallback(delay time.Duration, callback func())

	// ListenSubWorkflow registers a handler to be called when a sub-workflow is started.
	ListenSubWorkflow(listener func(instance *core.WorkflowInstance, name string))
}