fix(falsy/truthy) validate # of arguments

Tieske · Tieske · commit 4e799e7d3fe2 · 2022-02-01T12:36:08.000+01:00
see lunarmodules/busted#674
diff --git a/src/assertions.lua b/src/assertions.lua
@@ -142,11 +142,15 @@ local function same(state, arguments, level)
 end
 
 local function truthy(state, arguments, level)
+  local argcnt = arguments.n
+  assert(argcnt > 0, s("assertion.internal.argtolittle", { "truthy", 1, tostring(argcnt) }), level)
   set_failure_message(state, arguments[2])
   return arguments[1] ~= false and arguments[1] ~= nil
 end
 
 local function falsy(state, arguments, level)
+  local argcnt = arguments.n
+  assert(argcnt > 0, s("assertion.internal.argtolittle", { "falsy", 1, tostring(argcnt) }), level)
   return not truthy(state, arguments, level)
 end
 
