Add mtt test harness with smoke and pipe network tests

.github/workflows/test.yml

@@ -0,0 +1,15 @@
+name: test
+on: [push, pull_request]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: buckaroobanzay/mtt@main
+      with:
+        modname: pipeworks
+        git_dependencies: |
+          https://github.com/BuckarooBanzay/mtt
+          https://github.com/OgelGames/fakelib
+          https://github.com/mt-mods/xcompat
+          https://github.com/mt-mods/basic_materials

.luacheckrc

@@ -16,5 +16,5 @@ read_globals = {
 	"screwdriver", "unified_inventory",
 	"i3", "mcl_experience", "awards",
 	"xcompat", "fakelib", "vizlib",
-	"mcl_redstone",
+	"mcl_redstone","mtt"
 }

docker-compose.yml

@@ -0,0 +1,15 @@
+services:
+  mtt:
+    image: ghcr.io/buckaroobanzay/mtt:latest
+    volumes:
+     - "./:/github/workspace"
+    environment:
+     INPUT_MODNAME: "pipeworks"
+     INPUT_TEST_MODE: "mod"
+     INPUT_MAPGEN: "singlenode"
+     INPUT_GIT_GAME_REPO: "https://github.com/minetest/minetest_game"
+     INPUT_GIT_DEPENDENCIES: |
+      https://github.com/BuckarooBanzay/mtt
+      https://github.com/OgelGames/fakelib
+      https://github.com/mt-mods/xcompat
+      https://github.com/mt-mods/basic_materials

init.lua

@@ -132,4 +132,9 @@ if core.get_modpath("unified_inventory") and unified_inventory.registered_catego
 	unified_inventory.add_category_items("automation", pipeworks.ui_cat_tube_list)
 end
 
+if core.get_modpath("mtt") and mtt.enabled then
+	dofile(pipeworks.modpath.."/mtt/smoketests.spec.lua")
+	dofile(pipeworks.modpath.."/mtt/network.spec.lua")
+end
+
 core.log("info", "Pipeworks loaded!")

mod.conf

@@ -2,5 +2,5 @@ name = pipeworks
 title = Pipeworks
 description = This mod uses mesh nodes and nodeboxes to supply a complete set of 3D pipes and tubes, along with devices that work with them.
 depends = basic_materials, xcompat, fakelib
-optional_depends = mesecons, mesecons_mvps, digilines, signs_lib, unified_inventory, default, screwdriver, fl_mapgen, sound_api, i3, hades_core, hades_furnaces, hades_chests, mcl_mapgen_core, mcl_barrels, mcl_furnaces, mcl_blast_furnace, mcl_smoker, mcl_experience, vizlib, mapgen
+optional_depends = mesecons, mesecons_mvps, digilines, signs_lib, unified_inventory, default, screwdriver, fl_mapgen, sound_api, i3, hades_core, hades_furnaces, hades_chests, mcl_mapgen_core, mcl_barrels, mcl_furnaces, mcl_blast_furnace, mcl_smoker, mcl_experience, vizlib, mapgen, mtt
 min_minetest_version = 5.10.0

mtt/network.spec.lua

@@ -0,0 +1,39 @@
+-- chest -> filter-injector -> tube -> chest, running along the x-axis
+mtt.register_with_area("chest -> injector -> tube -> chest", {
+	size = { x = 5, y = 3, z = 3 },
+	emerged = true
+}, function(pos1, _, callback)
+	local chest = "default:chest"
+
+	local y, z = pos1.y + 1, pos1.z + 1
+	local chest_in = { x = pos1.x, y = y, z = z }
+	local injector = { x = pos1.x + 1, y = y, z = z }
+	local tube = { x = pos1.x + 2, y = y, z = z }
+	local chest_out = { x = pos1.x + 3, y = y, z = z }
+
+	core.set_node(chest_in, { name = chest, param2 = 0 })
+	core.set_node(injector, { name = "pipeworks:filter", param2 = 0 })
+	core.set_node(tube, { name = "pipeworks:tube_1" })
+	core.set_node(chest_out, { name = chest, param2 = 0 })
+	pipeworks.scan_for_tube_objects(tube)
+
+	core.get_meta(injector):set_string("owner", "singleplayer")
+	core.get_meta(chest_in):get_inventory():add_item("main", "default:dirt 3")
+
+	local node = core.get_node(injector)
+	core.registered_nodes["pipeworks:filter"].on_punch(injector, node, nil)
+
+	-- itemwise injector, the item travels through the tube asynchronously
+	local inv_out = core.get_meta(chest_out):get_inventory()
+	local function check()
+		if inv_out:contains_item("main", "default:dirt") then
+			-- exactly one item moved per punch
+			assert(core.get_meta(chest_in):get_inventory():contains_item("main", "default:dirt 2"))
+			assert(not inv_out:contains_item("main", "default:dirt 2"))
+			callback()
+		else
+			core.after(0.2, check)
+		end
+	end
+	check()
+end)

mtt/smoketests.spec.lua

@@ -0,0 +1,23 @@
+-- mtt tests, only loaded if the "mtt" mod is present and enabled
+
+mtt.register("registered nodes", function(callback)
+	assert(core.registered_nodes["pipeworks:pipe_110000_empty"])
+	assert(core.registered_nodes["pipeworks:pipe_110000_loaded"])
+	assert(core.registered_nodes["pipeworks:tube_1"])
+	assert(core.registered_nodes["pipeworks:trashcan"])
+	if pipeworks.enable_autocrafter then
+		assert(core.registered_nodes["pipeworks:autocrafter"])
+	end
+	callback()
+end)
+
+mtt.register("pipe alias", function(callback)
+	assert(core.registered_aliases["pipeworks:pipe"] == "pipeworks:pipe_110000_empty")
+	callback()
+end)
+
+mtt.register("tube api", function(callback)
+	assert(type(pipeworks.register_tube) == "function")
+	assert(type(pipeworks.scan_for_tube_objects) == "function")
+	callback()
+end)