Empty cells should display the value of a field or property. If a cell contains "blank" or "null" then treat it as blank ("") or truly null.

Empty cells are automatically filled with the value of the field or property, and no check is performed. To explicitly set a value to empty string ("") or null, or to check for empty string or null, use the "blank" and "null" keywords.

blank and null keyword column fixture
field	field	field?	field?	is field null?	is field blank?
			null	true	false
blank			blank	false	true
joe			joe	false	false
null			null	true	false

public class BlankAndNullKeywordFixture : ColumnFixture
{
	public string Field;
	public bool IsFieldNull() {return Field == null;}
	public bool IsFieldBlank() {return Field != null && Field.Length == 0;}
}

blank and null keyword row fixture

field

null

blank

joe

public class BlankAndNullKeywordRowFixture : RowFixture
{
	public override object[] Query()
	{
		BlankAndNullKeywordColumnFixture domainObject1 = new BlankAndNullKeywordColumnFixture();
		domainObject1.Field = null;
		BlankAndNullKeywordColumnFixture domainObject2 = new BlankAndNullKeywordColumnFixture();
		domainObject2.Field = "";
		BlankAndNullKeywordColumnFixture domainObject3 = new BlankAndNullKeywordColumnFixture();
		domainObject3.Field = "joe";
		return new object[]{domainObject1, domainObject2, domainObject3};
	}

	public override Type GetTargetClass()
	{
		return typeof(BlankAndNullKeywordColumnFixture);
	}
}

action fixture
start	string fixture
enter	field	null	enter value
check	field		check with empty cell
check	field	null	check expected value
enter	field		enter with empty cell (should do nothing)
check	field		check with empty cell
check	field	null	check expected value

action fixture
start	string fixture
enter	field	blank
check	field
check	field	blank
enter	field
check	field
check	field	blank

action fixture
start	string fixture
enter	field	joe
check	field
check	field	joe
enter	field
check	field
check	field	joe