public void ReturnAnEmptyStringForInvalidColumn() { var sut = new ColumnHeaderHelper(); var headerString = sut.HeaderFor(-1); Assert.Equal(string.Empty, headerString); }
public void ReturnAValidHeaderString() { var sut = new ColumnHeaderHelper(); var headerString = sut.HeaderFor(1); Assert.Equal("A", headerString); }
public void ReturnAValidHeaderString_DoubleLength_End() { var sut = new ColumnHeaderHelper(); var headerString = sut.HeaderFor(52); Assert.Equal("AZ", headerString); }