public void ValueToStyleStringTest() { // Arrange Margins margins = new Margins(); margins.Properties["Left"] = "1"; margins.Properties["Right"] = "2"; margins.Properties["Top"] = "3"; margins.Properties["Bottom"] = "4"; string expectedResult = "1,2,3,4"; // Act string actualResult = margins.ValueToStyleString(); // Assert Assert.AreEqual(expectedResult, actualResult); }