public void FormatLogEvent_ValidLog_ExpectedTextIsReturned() { // Arrange var filters = this.GetDefaultFilters(); var formatter = new DefaultFormatter(); var entry = new LogEvent(LogLevel.Info, DateTime.Parse("2022-10-22 22:22:31.678"), "This is a log entry"); var expectedText = "[Log] [Info] This is a log entry"; // Act var outputText = formatter.FormatLogEvent(22, 1, 33, entry, filters, true); // Assert Assert.That(outputText, Is.Not.Empty, "Expected a string to be returned"); Assert.That(outputText, Is.EqualTo(expectedText), "Not the expected output text, you may need to adjust the test if the formatter has been changed."); }