lunatest for unit-testing, luacov for coverage

config.lua

@@ -0,0 +1,3 @@
+Stress.config = {
+    debug = false
+}

stress.lua

@@ -4,12 +4,21 @@ Stress for Minetest
 
 ]]
 
+Stress = {}
+
 stressEvents = {
     place = {}
 }
 
 local myPath = minetest.get_modpath(minetest.get_current_modname())
 
+dofile(myPath .. "/config.lua")
+
+if Stress.config.debug then
+    print("Stress.config.debug is enabled. *Never* use this in production!")
+    dofile(myPath .. "/tests.lua")
+end
+
 dofile(myPath .. "/stressedPosition.lua")
 dofile(myPath .. "/stressedArea.lua")
 dofile(myPath .. "/stressedNodeDef.lua")
@@ -17,8 +26,6 @@ dofile(myPath .. "/stressedNode.lua")
 dofile(myPath .. "/stressedStack.lua")
 dofile(myPath .. "/stressedInventory.lua")
 
-Stress = {}
-
 function Stress.__call(self, first, second)
     if stressedPosition.__valid(first) and stressedPosition.__valid(second) then
         return stressedArea(stressedPosition(first), stressedPosition(second))

stressedPosition.lua

@@ -56,3 +56,12 @@ stressedPosition.__meta = {
 }
 
 setmetatable(stressedPosition, { __call = stressedPosition.__call })
+
+function stressedPosition.test()
+    assert_equal(stressedPosition({1, 2, 3}), stressedPosition({x=1,y=2,z=3}))
+    assert_equal(stressedPosition({1, 2, 3}), -stressedPosition({-1, -2, -3}))
+    assert_equal(stressedPosition({1, 2, 3}) + stressedPosition({4, 5, 6}), stressedPosition({5, 7, 9}))
+    assert_equal(stressedPosition({1, 2, 3}) - stressedPosition({3, 2, 1}), stressedPosition({-2, 0, 2}))
+    assert_false(stressedPosition.__valid(nil))
+    assert_true(stressedPosition.__valid({1, 2, 3}))
+end

tests.lua

@@ -0,0 +1,35 @@
+--[[
+
+To be able to run tests and see coverage:
+download luacov from https://github.com/norman/luacov
+download lunatest from https://github.com/silentbicycle/lunatest
+place them into your minetest directory
+Copy luacov from luacov/src/bin/luacov to minetest/luacov_s
+Your directory structure should look like
+luacov
+├── defaults.lua
+├── reporter.lua
+├── runner.lua
+├── stats.lua
+└── tick.lua
+luacov_s
+lunatest.lua
+report.sh
+
+report.sh:
+if [ -f luacov.stats.out ]; then
+	lua luacov_s
+	rm luacov.stats.out
+fi
+vim luacov.report.out
+
+]]
+
+require "luacov"
+require "lunatest"
+
+function Stress.test()
+    stressedPosition.test()
+end
+
+minetest.after(0, Stress.test)