SonarLint.VisualStudio.Progress.UnitTests.ConfigurableProgressEvents.InvokeStepExecutionChanged C# (CSharp) Method

        public void InvokeStepExecutionChanged(StepExecutionChangedEventArgs args)
        {
            if (this.StepExecutionChanged != null)
            {
                this.StepExecutionChanged(this, args);
            }
        }

            public void RunAndVerifyExecutingStep(ConfigurableProgressEvents progressEvents, IProgressStep currentStep, int?currentVmIndex)
            {
                ProgressStepViewModel currentVM = currentVmIndex.HasValue ? this.visualizer.ViewModel.Steps[currentVmIndex.Value] : null;
                bool isFinalState = ProgressControllerHelper.IsFinalState(currentStep.ExecutionState) && this.IsLastStep(currentStep);

                // Trigger the event
                progressEvents.InvokeStepExecutionChanged(new StepExecutionChangedEventArgs(currentStep));

                // Assert
                if (currentVmIndex.HasValue)
                {
                    VerifyProgress(this.visualizer, this.ExpectedMainProgress, currentVM, this.ExpectedSubProgress);

                    if (isFinalState)
                    {
                        this.testSubject.CurrentExecutingGroup.Should().BeNull("Not expecting any executing group");
                    }
                    else
                    {
                        IProgressStep[] steps = this.GetAllStepsInGroup(currentStep);
                        if (currentStep.ImpactsProgress)
                        {
                            steps.Should().NotBeNull("There should be at least one step in the group");

                            VerifyExecutionGroup(this.testSubject.CurrentExecutingGroup, steps);
                        }
                        else
                        {
                            steps.Should().BeNull("Not expecting any steps in group since not impacting, so there's no group for it");
                        }
                    }
                }
                else
                {
                    currentVM.Should().BeNull("Current VM should be null, since not impacts progress");
                    (this.testSubject.CurrentExecutingGroup == null ||
                     this.testSubject.CurrentExecutingGroup.ExecutingStep == null)
                    .Should().BeTrue("Not expecting any changes for non impacting steps");
                }
            }