Get rid of node metadata when it becomes empty

[dragonfireclient.git] / games / devtest / mods / unittests / misc.lua

diff --git a/games/devtest/mods/unittests/misc.lua b/games/devtest/mods/unittests/misc.lua
index ba980866a12976281320346b7ec599015dbd629b..4b53004b1d47567d677471d04c7438ca889e0c79 100644 (file)
--- a/games/devtest/mods/unittests/misc.lua
+++ b/games/devtest/mods/unittests/misc.lua
@@ -48,3 +48,23 @@ local function test_v3s16_metatable(player, pos)
        assert(vector.check(found_pos))
 end
 unittests.register("test_v3s16_metatable", test_v3s16_metatable, {map=true})
+
+local function test_clear_meta(_, pos)
+       local ref = core.get_meta(pos)
+
+       for way = 1, 3 do
+               ref:set_string("foo", "bar")
+               assert(ref:contains("foo"))
+
+               if way == 1 then
+                       ref:from_table({})
+               elseif way == 2 then
+                       ref:from_table(nil)
+               else
+                       ref:set_string("foo", "")
+               end
+
+               assert(#core.find_nodes_with_meta(pos, pos) == 0, "clearing failed " .. way)
+       end
+end
+unittests.register("test_clear_meta", test_clear_meta, {map=true})