13 files changed, 309 insertions, 0 deletions
diff --git a/games/minimal/mods/unittests/crafting.lua b/games/minimal/mods/unittests/crafting.lua
new file mode 100644
index 000000000..eff13ce09
--- /dev/null
+++ b/games/minimal/mods/unittests/crafting.lua
@@ -0,0 +1,120 @@
+-- Test minetest.clear_craft function
+local function test_clear_craft()
+	minetest.log("info", "[unittests] Testing minetest.clear_craft")
+	-- Clearing by output
+	minetest.register_craft({
+		output = "foo",
+		recipe = {{"bar"}}
+	})
+	minetest.register_craft({
+		output = "foo 4",
+		recipe = {{"foo", "bar"}}
+	})
+	assert(#minetest.get_all_craft_recipes("foo") == 2)
+	minetest.clear_craft({output="foo"})
+	assert(minetest.get_all_craft_recipes("foo") == nil)
+	-- Clearing by input
+	minetest.register_craft({
+		output = "foo 4",
+		recipe = {{"foo", "bar"}}
+	})
+	assert(#minetest.get_all_craft_recipes("foo") == 1)
+	minetest.clear_craft({recipe={{"foo", "bar"}}})
+	assert(minetest.get_all_craft_recipes("foo") == nil)
+end
+
+-- Test minetest.get_craft_result function
+local function test_get_craft_result()
+	minetest.log("info", "[unittests] Testing minetest.get_craft_result")
+
+	-- normal
+	local input = {
+		method = "normal",
+		width = 2,
+		items = {"", "unittests:coal_lump", "", "unittests:stick"}
+	}
+	minetest.log("info", "[unittests] torch crafting input: "..dump(input))
+	local output, decremented_input = minetest.get_craft_result(input)
+	minetest.log("info", "[unittests] torch crafting output: "..dump(output))
+	minetest.log("info", "[unittests] torch crafting decremented input: "..dump(decremented_input))
+	assert(output.item)
+	minetest.log("info", "[unittests] torch crafting output.item:to_table(): "..dump(output.item:to_table()))
+	assert(output.item:get_name() == "unittests:torch")
+	assert(output.item:get_count() == 4)
+
+	-- fuel
+	input = {
+		method = "fuel",
+		width = 1,
+		items = {"unittests:coal_lump"}
+	}
+	minetest.log("info", "[unittests] coal fuel input: "..dump(input))
+	output, decremented_input = minetest.get_craft_result(input)
+	minetest.log("info", "[unittests] coal fuel output: "..dump(output))
+	minetest.log("info", "[unittests] coal fuel decremented input: "..dump(decremented_input))
+	assert(output.time)
+	assert(output.time > 0)
+
+	-- cooking
+	input = {
+		method = "cooking",
+		width = 1,
+		items = {"unittests:iron_lump"}
+	}
+	minetest.log("info", "[unittests] iron lump cooking input: "..dump(output))
+	output, decremented_input = minetest.get_craft_result(input)
+	minetest.log("info", "[unittests] iron lump cooking output: "..dump(output))
+	minetest.log("info", "[unittests] iron lump cooking decremented input: "..dump(decremented_input))
+	assert(output.time)
+	assert(output.time > 0)
+	assert(output.item)
+	minetest.log("info", "[unittests] iron lump cooking output.item:to_table(): "..dump(output.item:to_table()))
+	assert(output.item:get_name() == "unittests:steel_ingot")
+	assert(output.item:get_count() == 1)
+
+	-- tool repair (repairable)
+	input = {
+		method = "normal",
+		width = 2,
+		-- Using a wear of 60000
+		items = {"unittests:repairable_tool 1 60000", "unittests:repairable_tool 1 60000"}
+	}
+	minetest.log("info", "[unittests] repairable tool crafting input: "..dump(input))
+	output, decremented_input = minetest.get_craft_result(input)
+	minetest.log("info", "[unittests] repairable tool crafting output: "..dump(output))
+	minetest.log("info", "[unittests] repairable tool crafting decremented input: "..dump(decremented_input))
+	assert(output.item)
+	minetest.log("info", "[unittests] repairable tool crafting output.item:to_table(): "..dump(output.item:to_table()))
+	assert(output.item:get_name() == "unittests:repairable_tool")
+	-- Test the wear value.
+	-- See src/craftdef.cpp in Minetest source code for the formula. The formula to calculate
+	-- the value 51187 is:
+	--    65536 - ((65536-60000)+(65536-60000)) + floor(additonal_wear * 65536 + 0.5) = 51187
+	-- where additional_wear = 0.05
+	assert(output.item:get_wear() == 51187)
+	assert(output.item:get_count() == 1)
+
+	-- failing tool repair (unrepairable)
+	input = {
+		method = "normal",
+		width = 2,
+		items = {"unittests:unrepairable_tool 1 60000", "unittests:unrepairable_tool 1 60000"}
+	}
+	minetest.log("info", "[unittests] unrepairable tool crafting input: "..dump(input))
+	output, decremented_input = minetest.get_craft_result(input)
+	minetest.log("info", "[unittests] unrepairable tool crafting output: "..dump(output))
+	minetest.log("info", "[unittests] unrepairable tool crafting decremented input: "..dump(decremented_input))
+	assert(output.item)
+	minetest.log("info", "[unittests] unrepairable tool crafting output.item:to_table(): "..dump(output.item:to_table()))
+	-- unrepairable tool must not yield any output
+	assert(output.item:get_name() == "")
+
+end
+
+function unittests.test_crafting()
+	test_clear_craft()
+	test_get_craft_result()
+	minetest.log("action", "[unittests] Crafting tests passed!")
+	return true
+end
+
diff --git a/games/minimal/mods/unittests/crafting_prepare.lua b/games/minimal/mods/unittests/crafting_prepare.lua
new file mode 100644
index 000000000..a09734827
--- /dev/null
+++ b/games/minimal/mods/unittests/crafting_prepare.lua
@@ -0,0 +1,88 @@
+-- Registering some dummy items and recipes for the crafting tests
+
+minetest.register_craftitem("unittests:torch", {
+	description = "Crafting Test Item: Torch",
+	inventory_image = "unittests_torch.png",
+
+	groups = { dummy = 1 },
+})
+minetest.register_craftitem("unittests:coal_lump", {
+	description = "Crafting Test Item: Coal Lump",
+	inventory_image = "unittests_coal_lump.png",
+
+	groups = { dummy = 1 },
+})
+minetest.register_craftitem("unittests:stick", {
+	description = "Crafting Test Item: Stick",
+	inventory_image = "unittests_stick.png",
+
+	groups = { dummy = 1 },
+})
+minetest.register_craftitem("unittests:iron_lump", {
+	description = "Crafting Test Item: Iron Lump",
+	inventory_image = "unittests_iron_lump.png",
+
+	groups = { dummy = 1 },
+})
+minetest.register_craftitem("unittests:steel_ingot", {
+	description = "Crafting Test Item: Steel Ingot",
+	inventory_image = "unittests_steel_ingot.png",
+
+	groups = { dummy = 1 },
+})
+
+-- Recipes for tests: Normal crafting, cooking and fuel
+
+minetest.register_craft({
+	output = 'unittests:torch 4',
+	recipe = {
+		{'unittests:coal_lump'},
+		{'unittests:stick'},
+	}
+})
+
+minetest.register_craft({
+	type = "cooking",
+	output = "unittests:steel_ingot",
+	recipe = "unittests:iron_lump",
+})
+
+minetest.register_craft({
+	type = "fuel",
+	recipe = "unittests:coal_lump",
+	burntime = 40,
+})
+
+-- Test tool repair
+minetest.register_craft({
+	type = "toolrepair",
+	additional_wear = -0.05,
+})
+
+-- Test the disable_repair=1 group
+minetest.register_tool("unittests:unrepairable_tool", {
+	description = "Crafting Test Item: Unrepairable Tool",
+	inventory_image = "unittests_unrepairable_tool.png",
+	tool_capabilities = {
+		groupcaps = {
+			cracky = {
+				times = {3, 2, 1},
+			}
+		}
+	},
+	groups = { disable_repair = 1, dummy = 1 }
+})
+
+minetest.register_tool("unittests:repairable_tool", {
+	description = "Crafting Test Item: Repairable Tool",
+	inventory_image = "unittests_repairable_tool.png",
+	tool_capabilities = {
+		groupcaps = {
+			cracky = {
+				times = {3, 2, 1},
+			}
+		}
+	},
+
+	groups = { dummy = 1 },
+})
diff --git a/games/minimal/mods/unittests/init.lua b/games/minimal/mods/unittests/init.lua
new file mode 100644
index 000000000..6c1728420
--- /dev/null
+++ b/games/minimal/mods/unittests/init.lua
@@ -0,0 +1,16 @@
+unittests = {}
+
+local modpath = minetest.get_modpath("unittests")
+dofile(modpath .. "/random.lua")
+dofile(modpath .. "/player.lua")
+dofile(modpath .. "/crafting_prepare.lua")
+dofile(modpath .. "/crafting.lua")
+
+if minetest.settings:get_bool("devtest_unittests_autostart", false) then
+	unittests.test_random()
+	unittests.test_crafting()
+	minetest.register_on_joinplayer(function(player)
+		unittests.test_player(player)
+	end)
+end
+
diff --git a/games/minimal/mods/unittests/mod.conf b/games/minimal/mods/unittests/mod.conf
new file mode 100644
index 000000000..0d5e3c959
--- /dev/null
+++ b/games/minimal/mods/unittests/mod.conf
@@ -0,0 +1,2 @@
+name = unittests
+description = Adds automated unit tests for the engine
diff --git a/games/minimal/mods/unittests/player.lua b/games/minimal/mods/unittests/player.lua
new file mode 100644
index 000000000..10781a95f
--- /dev/null
+++ b/games/minimal/mods/unittests/player.lua
@@ -0,0 +1,73 @@
+--
+-- HP Change Reasons
+--
+local expect = nil
+local function run_hpchangereason_tests(player)
+	expect = { type = "set_hp", from = "mod" }
+	player:set_hp(3)
+	assert(expect == nil)
+
+	expect = { a = 234, type = "set_hp", from = "mod" }
+	player:set_hp(7, { a= 234 })
+	assert(expect == nil)
+
+	expect = { df = 3458973454, type = "fall", from = "mod" }
+	player:set_hp(10, { type = "fall", df = 3458973454 })
+	assert(expect == nil)
+
+	player:set_hp(20)
+end
+
+local function run_player_meta_tests(player)
+	local meta = player:get_meta()
+	meta:set_string("foo", "bar")
+	assert(meta:contains("foo"))
+	assert(meta:get_string("foo") == "bar")
+	assert(meta:get("foo") == "bar")
+
+	local meta2 = player:get_meta()
+	assert(meta2:get_string("foo") == "bar")
+	assert(meta2:get("foo") == "bar")
+	assert(meta:equals(meta2))
+
+	meta:set_string("bob", "dillan")
+	assert(meta:get_string("foo") == "bar")
+	assert(meta:get_string("bob") == "dillan")
+	assert(meta:get("bob") == "dillan")
+	assert(meta2:get_string("foo") == "bar")
+	assert(meta2:get_string("bob") == "dillan")
+	assert(meta2:get("bob") == "dillan")
+	assert(meta:equals(meta2))
+
+	meta:set_string("foo", "")
+	assert(not meta:contains("foo"))
+	assert(meta:get("foo") == nil)
+	assert(meta:get_string("foo") == "")
+	assert(meta:equals(meta2))
+end
+
+function unittests.test_player(player)
+	minetest.register_on_player_hpchange(function(player, hp, reason)
+		if not expect then
+			return
+		end
+
+		for key, value in pairs(reason) do
+			assert(expect[key] == value)
+		end
+
+		for key, value in pairs(expect) do
+			assert(reason[key] == value)
+		end
+
+		expect = nil
+	end)
+
+	run_hpchangereason_tests(player)
+	run_player_meta_tests(player)
+	local msg = "Player tests passed for player '"..player:get_player_name().."'!"
+	minetest.chat_send_all(msg)
+	minetest.log("action", "[unittests] "..msg)
+	return true
+end
+
diff --git a/games/minimal/mods/unittests/random.lua b/games/minimal/mods/unittests/random.lua
new file mode 100644
index 000000000..f94f0a88e
--- /dev/null
+++ b/games/minimal/mods/unittests/random.lua
@@ -0,0 +1,10 @@
+function unittests.test_random()
+	-- Try out PseudoRandom
+	minetest.log("action", "[unittests] Testing PseudoRandom ...")
+	local pseudo = PseudoRandom(13)
+	assert(pseudo:next() == 22290)
+	assert(pseudo:next() == 13854)
+	minetest.log("action", "[unittests] PseudoRandom test passed!")
+	return true
+end
+
diff --git a/games/minimal/mods/unittests/textures/unittests_coal_lump.png b/games/minimal/mods/unittests/textures/unittests_coal_lump.png
new file mode 100644
index 000000000..f460d909e
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_coal_lump.png
diff --git a/games/minimal/mods/unittests/textures/unittests_iron_lump.png b/games/minimal/mods/unittests/textures/unittests_iron_lump.png
new file mode 100644
index 000000000..22f43e9cc
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_iron_lump.png
diff --git a/games/minimal/mods/unittests/textures/unittests_repairable_tool.png b/games/minimal/mods/unittests/textures/unittests_repairable_tool.png
new file mode 100644
index 000000000..46fbbaa74
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_repairable_tool.png
diff --git a/games/minimal/mods/unittests/textures/unittests_steel_ingot.png b/games/minimal/mods/unittests/textures/unittests_steel_ingot.png
new file mode 100644
index 000000000..6977696a2
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_steel_ingot.png
diff --git a/games/minimal/mods/unittests/textures/unittests_stick.png b/games/minimal/mods/unittests/textures/unittests_stick.png
new file mode 100644
index 000000000..ffdce70d4
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_stick.png
diff --git a/games/minimal/mods/unittests/textures/unittests_torch.png b/games/minimal/mods/unittests/textures/unittests_torch.png
new file mode 100644
index 000000000..ba5eebef0
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_torch.png
diff --git a/games/minimal/mods/unittests/textures/unittests_unrepairable_tool.png b/games/minimal/mods/unittests/textures/unittests_unrepairable_tool.png
new file mode 100644
index 000000000..c676213a5
--- /dev/null
+++ b/games/minimal/mods/unittests/textures/unittests_unrepairable_tool.png