Refactor, cleanup

lib/space_lua/lume_test.lua

@@ -0,0 +1,39 @@
+local function assertEqual(a, b, message)
+    if a ~= b then
+        error("Assertion failed: " .. a .. " is not equal to " .. b .. " " .. message)
+    end
+end
+
+lume = lume or {}
+
+local getiter = function(x)
+  if lume.isarray(x) then
+    return ipairs
+  elseif type(x) == "table" then
+    return pairs
+  end
+  error("expected table", 3)
+end
+
+function lume.isarray(x)
+  return type(x) == "table" and x[1] ~= nil
+end
+
+function lume.concat(...)
+  local rtn = {}
+  for i = 1, select("#", ...) do
+    local t = select(i, ...)
+    if t ~= nil then
+      local iter = getiter(t)
+      for _, v in iter(t) do
+        rtn[#rtn + 1] = v
+      end
+    end
+  end
+  return rtn
+end
+
+local r = lume.concat({1, 2}, {3, 4})
+assertEqual(#r, 4)
+assertEqual(r[1], 1)
+assertEqual(r[4], 4)