Template:If empty/testcases

Code	Sandbox	Current	Notes
{{If empty}}			Returns an empty string.
{{If empty|one}}	one	one	Returns the first parameter that is defined and not empty.
{{If empty|one|two}}	one	one
{{If empty|one|two|three|four}}	one	one
{{If empty||two}}	two	two	The first parameter is empty/undefined, so is passed over.
{{If empty||two|three|four}}	two	two
{{If empty||two||four}}	two	two
{{If empty|||||||||nine}}	nine	nine
{{If empty||||||||||ten}}	ten	ten	Empty string returned if maximum of nine parameters exceeded.
{{If empty|}}			The only parameter is empty or undefined, so returns an empty string.
{{If empty||||}}			Returns an empty string.
{{If empty|{{{1|}}}|{{{2|}}}|three}}	three	three
{{If empty|{{{1}}}|{{{2}}}|three}}	{{{1}}}	{{{1}}}	No pipe-characters following the names of the first two parameters ("1" and "2"), so the first of these returned as text ("{{{1}}}").
{{If empty|{{{logo|}}}|two}}	two	two
{{If empty|{{{logo}}}|two}}	{{{logo}}}	{{{logo}}}	No pipe-character following the parameter name "logo", so the text "{{{logo}}}" returned.
{{If empty|2=x}}			Unnamed parameters must be defined sequentially.
{{If empty|p=q}}			The template identifies the parameters it receives as parameters 1 to 9, not using names such as "p", etc.
{{If empty|one|{{X1}}[[Category:X1]]}}	one	one	Parameters after the first non-empty parameter are not expanded, so this page does not transclude Template:X1 and is not in Category:X1.