added recursive template function tests

Author: uwetews

UnitTests/TemplateSource/TagTests/TemplateFunction/templates/test_template_function_recursion1.tpl

@@ -0,0 +1,20 @@
+{strip}
+{function 'recursion1' level=0}
+    {$level}
+    {if $level < 5}
+        {call name=recursion1 level=$level+1}
+    {/if}
+{/function}
+
+{call name=recursion1}
+
+
+{function 'recursion2' level=0}
+    <br>2 level = {$level}
+    {if $level < 5}
+        {call name=recursion2 level=$level+1}
+    {/if}
+{/function}
+
+{recursion2}
+{/strip}

UnitTests/TemplateSource/TagTests/TemplateFunction/templates/test_template_function_recursion2.tpl

@@ -0,0 +1,10 @@
+{strip}
+{function 'recursion2' level=0}
+{$level}
+    {if $level < 5}
+        {call name=recursion2 level=$level+1}
+    {/if}
+{/function}
+
+{recursion2}
+{/strip}