Add callback on_mapblocks_changed

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

diff --git a/games/devtest/mods/unittests/misc.lua b/games/devtest/mods/unittests/misc.lua
index 3f327edece5ad5c5a186cd0fab6fcebe3f5eebd9..10af80585455500a098cc4b3a47ffd8ca5af08af 100644 (file)
--- a/games/devtest/mods/unittests/misc.lua
+++ b/games/devtest/mods/unittests/misc.lua
@@ -147,3 +147,33 @@ local function test_mapgen_edges(cb)
        minetest.emerge_area(max_edge, max_edge:add(1), emerge_block, max_finished)
 end
 unittests.register("test_mapgen_edges", test_mapgen_edges, {map=true, async=true})
+
+local finish_test_on_mapblocks_changed
+minetest.register_on_mapblocks_changed(function(modified_blocks, modified_block_count)
+       if finish_test_on_mapblocks_changed then
+               finish_test_on_mapblocks_changed(modified_blocks, modified_block_count)
+               finish_test_on_mapblocks_changed = nil
+       end
+end)
+local function test_on_mapblocks_changed(cb, player, pos)
+       local bp1 = (pos / minetest.MAP_BLOCKSIZE):floor()
+       local bp2 = bp1:add(1)
+       for _, bp in ipairs({bp1, bp2}) do
+               -- Make a modification in the block.
+               local p = bp * minetest.MAP_BLOCKSIZE
+               minetest.load_area(p)
+               local meta = minetest.get_meta(p)
+               meta:set_int("test_on_mapblocks_changed", meta:get_int("test_on_mapblocks_changed") + 1)
+       end
+       finish_test_on_mapblocks_changed = function(modified_blocks, modified_block_count)
+               if modified_block_count < 2 then
+                       return cb("Expected at least two mapblocks to be recorded as modified")
+               end
+               if not modified_blocks[minetest.hash_node_position(bp1)] or
+                               not modified_blocks[minetest.hash_node_position(bp2)] then
+                       return cb("The expected mapblocks were not recorded as modified")
+               end
+               cb()
+       end
+end
+unittests.register("test_on_mapblocks_changed", test_on_mapblocks_changed, {map=true, async=true})