public void Format_should_return_expected_string() { var expectedFormat = "Failure: Container.Test1: First" + Environment.NewLine + "Error: Container.Test2: Second" + Environment.NewLine + Environment.NewLine + "Tests: 5, Errors: 1, Failures: 1" + Environment.NewLine; var results = new Results { Tests = 5, Errors = 1, Failures = 1, DetailList = new IResultDetail[] { new ResultDetail(ResultType.Failure, "Container.Test1", "First"), new ResultDetail(ResultType.Error, "Container.Test2", "Second") } }; Assert.That(results.Format(), Is.EqualTo(expectedFormat)); }