err: improve assert error messages

Signed-off-by: Tobias Ulmer <tu@emlix.com>

diff --git a/generic/err.lua b/generic/err.lua
index a64143cb51dce0e3ab33a846144ba912badbd80b..fc9ae72cb4c5c24a180e3a3a7cf9bd353f5d848b 100644 (file)
--- a/generic/err.lua
+++ b/generic/err.lua
@@ -33,9 +33,9 @@ local e2lib = require("e2lib")
 local strict = require("strict")
 
 local function assert_err(e)
-    assert(type(e) == "table")
-    assert(type(e.count) == "number")
-    assert(type(e.msg) == "table")
+    assert(type(e) == "table", "No error table supplied")
+    assert(type(e.count) == "number", "Error count is not a number")
+    assert(type(e.msg) == "table", "Error message table of wrong type")
     return true
 end