public void FormatThread_ValidLogWithBlankThreadName_ExpectedTextIsReturned() { // Arrange var filters = this.GetDefaultFilters(); var formatter = new DefaultFormatter(); var entry1 = new MethodEntry(1, "Yalf.TestMethod", new[] { "param1", "param2" }, DateTime.Parse("2022-10-22 22:22:31.678")); var entry2 = new MethodExit(1, "Yalf.TestMethod", 345, true, "returnVal"); var entry = new ThreadData(22, String.Empty, new BaseEntry[] { entry1, entry2 }); var expectedText = "[Thread 22]"; // Act var outputText = formatter.FormatThread(entry, filters); // 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."); }