public void DeactivateShouldDeactivateInitialisedModules()
{
// initialise module b and d
_mainEditorVm.CurrentModuleId = "test_module_b";
_moduleB.Verify(i => i.Initialise(It.IsAny <IServiceGetter>()), Times.Once());
_mainEditorVm.CurrentModuleId = "test_module_d";
_moduleD.Verify(i => i.Initialise(It.IsAny <IServiceGetter>()), Times.Once());
// assert that others arent initialised
_moduleA.Verify(i => i.Initialise(It.IsAny <IServiceGetter>()), Times.Never());
_moduleC.Verify(i => i.Initialise(It.IsAny <IServiceGetter>()), Times.Never());
// deactivate
_mainEditorVm.Deactivate();
_moduleA.Verify(i => i.Deactivate(), Times.Never());
_moduleC.Verify(i => i.Deactivate(), Times.Never());
_moduleB.Verify(i => i.Deactivate(), Times.Once());
_moduleD.Verify(i => i.Deactivate(), Times.Once());
}
