public void SetDescriptionToNullWhenEmpty() { var issue = new Issue(new Project(new ApplicationUser(), "project"), "name", "description"); issue.Description.Should().NotBe(null); issue.ChangeDescription(null); issue.Description.Should().Be(null); issue.ChangeDescription(""); issue.Description.Should().Be(null); issue.ChangeDescription(" "); issue.Description.Should().Be(null); }