src/test/resources/freemarker/test/templatesuite/templates/then-builtin.ftl

<#assign f1InvocationCnt = 0>
<#assign f2InvocationCnt = 0>

<@assertEquals expected="f1 1" actual=true?then(f1(), f2()) />
<@assertEquals expected="f2 1" actual=false?then(f1(), f2()) />
<@assertEquals expected="f1 2" actual=true?then(f1(), f2()) />
<@assertEquals expected="f2 2" actual=false?then(f1(), f2()) />
<@assertEquals expected=2 actual=f1InvocationCnt />
<@assertEquals expected=2 actual=f2InvocationCnt />

<#function f1>
  <#assign f1InvocationCnt++>
  <#return "f1 " + f1InvocationCnt>
</#function>

<#function f2>
  <#assign f2InvocationCnt++>
  <#return "f2 " + f2InvocationCnt>
</#function>

<#assign x = 1>
<@assertEquals expected='Y' actual=(x < 2 * x)?then(-x < x, false)?then('Y', 'N') />

<@assertEquals expected=1 actual=true?then(x, noSuchVar) />
<@assertEquals expected=1 actual=false?then(noSuchVar, x) />

<@assertFails message="noSuchVar1">${true?then(noSuchVar1, noSuchVar2)}</@>
<@assertFails message="noSuchVar2">${false?then(noSuchVar1, noSuchVar2)}</@>
<@assertFails message="noSuchVar3">${noSuchVar3?then(noSuchVar1, noSuchVar2)}</@>

<#assign out><#escape x as x?then(1, 0)>${false} ${true}</#escape></#assign>
<@assertEquals expected="0 1" actual=out />

<#assign out><#escape x as (x < 0)?then(-x * 3, x * 2)>${-1} ${1}</#escape></#assign>
<@assertEquals expected="3 2" actual=out />