private void ValidateTestClasses() { if (!string.IsNullOrWhiteSpace(TestClassParameter) && !MultipleTestClasses.Any()) { MultipleSourceClasses .ForEach(x => MultipleTestClasses.Add(TestClassParameter)); return; } var isAllClassesFound = true; var testClasses = new List <string>(); foreach (var testClass in MultipleTestClasses) { var classes = new FileInfo(TestProjectParameter).GetProjectFiles(); var file = classes.FindKey(testClass); if (!string.IsNullOrWhiteSpace(file)) { var path = new FileInfo(classes[file]); if (path.Exists) { testClasses.Add(path.FullName); } else { isAllClassesFound = false; break; } } else { isAllClassesFound = false; break; } } if (isAllClassesFound) { MultipleTestClasses.Clear(); MultipleTestClasses.AddRange(testClasses); return; } throw new MuTestInputException(ErrorMessage, $"One or more Test class file(s) (.cs) are not exist. {CliOptions.MultipleTestClasses.ArgumentDescription}"); }