User:ShakespeareFan00/foo/testcases

Template Call Actual output Desired output
For comparison : -
{{sanenull}} @@null@@ @@null@@
{{sanenull|}} @@null@@ @@null@@
{{sanenull|value}} value value
{{sanenull|1=}} @@null@@ @@null@@
{{sanenull|1=value}} value value
{{User:ShakespeareFan00/sanenull-x|value}} value value
{{User:ShakespeareFan00/sanenull-x}} @@absent@@ @@absent@@
{{User:ShakespeareFan00/sanenull-x|}} @@empty@@ @@empty@@