1 files changed, 120 insertions, 0 deletions
diff --git a/games/devtest/mods/unittests/crafting.lua b/games/devtest/mods/unittests/crafting.lua
new file mode 100644
index 000000000..eff13ce09
--- /dev/null
+++ b/games/devtest/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
+