diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 90173656..b0dcee5a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -179,6 +179,13 @@ jobs:
         ../../luac.cross -e ../NTest/NTest_NTest.lua | tee log
         grep "failed. 0" log
       shell: bash
+    - name: NTest hosttests
+      run: |
+        cd tests
+        cp NTest/NTest.lua .
+        ../luac.cross -e NTest_lua.lua | tee log
+        (if grep  " ==>  " log ; then exit 1 ; fi)
+      shell: bash
 
 
   NTest_win:
@@ -207,6 +214,13 @@ jobs:
         ../../luac.cross.exe -e ../NTest/NTest_NTest.lua | tee log
         grep "failed. 0" log
       shell: bash
+    - name: NTest hosttests
+      run: |
+        cd tests
+        cp NTest/NTest.lua .
+        ../luac.cross.exe -e NTest_lua.lua | tee log
+        (if grep  " ==>  " log ; then exit 1 ; fi)
+      shell: bash
 
 
   luacheck:
diff --git a/app/lua/lauxlib.c b/app/lua/lauxlib.c
index 73b971f3..efb89843 100644
--- a/app/lua/lauxlib.c
+++ b/app/lua/lauxlib.c
@@ -214,7 +214,7 @@ LUALIB_API int luaL_argerror (lua_State *L, int narg, const char *extramsg) {
 
 LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname) {
   const char *msg = lua_pushfstring(L, "%s expected, got %s",
-                                    tname, lua_typename(L, narg));
+                                    tname, luaL_typename(L, narg));
   return luaL_argerror(L, narg, msg);
 }
 
diff --git a/tests/NTest/NTest.lua b/tests/NTest/NTest.lua
index 1576d282..32e5205e 100644
--- a/tests/NTest/NTest.lua
+++ b/tests/NTest/NTest.lua
@@ -19,6 +19,39 @@ local function TERMINAL_HANDLER(e, test, msg, errormsg)
   end
 end
 
+-- implement pseudo task handling for on host testing
+local drain_post_queue = function() end
+
+if not node then  -- assume we run on host, not on MCU
+  local post_queue = {{},{},{}}
+
+  drain_post_queue = function()
+    while #post_queue[1] + #post_queue[2] + #post_queue[3] > 0 do
+      for i = 3, 1, -1 do
+        if #post_queue[i] > 0 then
+          local f = table.remove(post_queue[i], 1)
+          if f then
+            f()
+          end
+          break
+        end
+      end
+    end
+  end
+
+  -- luacheck: push ignore 121 122 (setting read-only global variable)
+  node = {}
+  node.task = {LOW_PRIORITY = 1, MEDIUM_PRIORITY = 2, HIGH_PRIORITY = 3}
+  node.task.post = function (p, f)
+    table.insert(post_queue[p], f)
+  end
+
+  node.setonerror = function(fn) node.Host_Error_Func = fn end  -- luacheck: ignore 142
+  -- luacheck: pop
+end
+
+
+
 --[[
 if equal returns true
 if different returns {msg = "<reason>"}
@@ -233,6 +266,7 @@ local function NTest(testrunname, failoldinterface)
     table.insert(pendingtests, testfn)
     if #pendingtests == 1 then
       runpending()
+      drain_post_queue()
     end
   end
 
diff --git a/tests/NTest/NTest_NTest.lua b/tests/NTest/NTest_NTest.lua
index 0e4a2820..0701c681 100644
--- a/tests/NTest/NTest_NTest.lua
+++ b/tests/NTest/NTest_NTest.lua
@@ -406,43 +406,13 @@ end -- load_tests()
 
 local cbWrap = function(cb) return cb end
 
--- implement pseudo task handling for on host testing
-local drain_post_queue = function() end
-
-if not node then
-  local post_queue = {{},{},{}}
-
-  drain_post_queue = function()
-    while #post_queue[1] + #post_queue[2] + #post_queue[3] > 0 do
-      for i = 3, 1, -1 do
-        if #post_queue[i] > 0 then
-          local f = table.remove(post_queue[i], 1)
-          if f then
-            f()
-          end
-          break
-        end
-      end
-    end
-  end
-
-  -- luacheck: push ignore 121 122 (setting read-only global variable)
-  node = {}
-  node.task = {LOW_PRIORITY = 1, MEDIUM_PRIORITY = 2, HIGH_PRIORITY = 3}
-  node.task.post = function (p, f)
-    table.insert(post_queue[p], f)
-  end
-
-  local errorfunc
-  node.setonerror = function(fn) errorfunc = fn end
-  -- luacheck: pop
-
+if not node.LFS then  -- assume we run on host, not on MCU. node is already defined by NTest if running on host
   cbWrap = function(cb)
       return function(...)
           local ok, p1,p2,p3,p4 = pcall(cb, ...)
           if not ok then
-            if errorfunc then
-              errorfunc(p1)
+            if node.Host_Error_Func then  -- luacheck: ignore 143
+              node.Host_Error_Func(p1)  -- luacheck: ignore 143
             else
               print(p1, "::::::::::::: reboot :::::::::::::")
             end
@@ -465,7 +435,7 @@ end
 local pass
 -- Set meta test handler
 N.report(function(e, test, msg, errormsg)
-  local function consumemsg(msg, area) -- luacheck: ignore  
+  local function consumemsg(msg, area) -- luacheck: ignore
     if not expected[1][area][1] then
       print("--- FAIL "..expected[1].name..' ('..area..'ed): unexpected "'..
         msg..'"')
@@ -535,6 +505,12 @@ local function drain_async_queue()
 end
 
 metatest = function(name, f, expectedPassed, expectedFailed, expectedExcept, asyncMode)
+  table.insert(expected, {
+    name = name,
+    pass = expectedPassed,
+    fail = expectedFailed,
+    except = expectedExcept or {}
+  })
   local ff = f
   if asyncMode then
     ff = function(...)
@@ -549,15 +525,7 @@ metatest = function(name, f, expectedPassed, expectedFailed, expectedExcept, asy
   else
     N.test(name, ff)
   end
-  table.insert(expected, {
-    name = name,
-    pass = expectedPassed,
-    fail = expectedFailed,
-    except = expectedExcept or {}
-  })
 end
 
 
 load_tests()
-
-drain_post_queue()
diff --git a/tests/NTest_lua.lua b/tests/NTest_lua.lua
new file mode 100644
index 00000000..13ebe346
--- /dev/null
+++ b/tests/NTest_lua.lua
@@ -0,0 +1,6 @@
+local N = require "NTest" ("Lua detail tests")
+
+N.test('typeerror', function()
+  fail(function() math.abs("") end, "number expected, got string", "string")
+  fail(function() math.abs() end, "number expected, got no value", "no value")
+end)