Fix behaviour on unset. Tested on real kamailio.

mocks/sr.lua

@@ -25,6 +25,7 @@ pvMock = {
             local _id, indx, key
             local patterns = {
                 '%$xavp%(([%w_]+)%)$',
+                '%$xavp%(([%w_^%[]+)%[(%d+)%]%)$',
                 '%$xavp%(([%w_]+)=>([%w_]+)%)$',
                 '%$xavp%(([%w_^%[]+)%[(%d+)%]=>([%w_]+)%)$'
             }
@@ -213,7 +214,7 @@ pvMock = {
                         return
                     end
                     result.real_indx = #t.vars[result.private_id]._et - result.indx
-                    t.vars[result.private_id]._et[result.real_indx] = nil
+                    t.vars[result.private_id]._et[result.real_indx] = false
                 end
             elseif result.type == 'avp' then
                 t.vars[result.private_id] = nil

tests/mocks.lua

@@ -246,10 +246,15 @@ TestSRMock = {}
     end
 
     function TestSRMock:test_unset_xavp()
-        self.sr.pv.sets("$xavp(g=>t)", "value_t")
-        assertEquals(self.sr.pv.get("$xavp(g=>t)"), "value_t")
-        self.sr.pv.unset("$xavp(g=>t)")
-        assertEquals(self.sr.pv.get("$xavp(g=>t)"), nil)
+        self.sr.pv.sets("$xavp(g=>t)", "value")
+        assertEquals(self.sr.pv.get("$xavp(g[0]=>t)"), "value")
+        self.sr.pv.sets("$xavp(g=>t)", "value1")
+        assertEquals(self.sr.pv.get("$xavp(g[0]=>t)"), "value1")
+        self.sr.pv.unset("$xavp(g[0]=>t)")
+        assertEquals(self.sr.pv.get("$xavp(g[0]=>t)"), nil)
+        assertEquals(self.sr.pv.get("$xavp(g[1]=>t)"), "value")
+        self.sr.pv.unset("$xavp(g[1])")
+        assertFalse(self.sr.pv.get("$xavp(g[1])"))
         self.sr.pv.unset("$xavp(g)")
         assertEquals(self.sr.pv.get("$xavp(g)"), nil)
     end