Added support for files loaded through LÖVE, and added error-handling if no file can be found.

assert-gooder.lua

@@ -148,19 +148,38 @@ end
 
 --------------------------------------------------------------------------------
 
+local function get_module_filetext (module_filepath)
+    assert(type(module_filepath) == 'string')
+
+    -- Just attempt standard file open
+    local filehandle = io.open(module_filepath, 'r')
+    if filehandle then
+        filetext = filehandle:read '*all'
+        filehandle:close()
+        return filetext
+    end
+
+    -- What about LÖVE?
+    local filetext = love and love.filesystem and love.filesystem.read(module_filepath) or nil
+    if filetext then  return filetext  end
+
+    -- I give up...
+    return nil
+end
+
 local function get_assert_body_text (call_info)
     if call_info.what == 'Lua' or call_info.what == 'main' then
         -- Find filetext
         local filetext = nil
         if call_info.source:find '^@' then
-            local filehandle = io.open(call_info.short_src, 'r')
-            filetext = filehandle:read '*all'
-            filehandle:close()
+            filetext = get_module_filetext(call_info.short_src)
         elseif call_info.short_src:find '^%[string' then
             filetext = call_info.source
         else
             error 'Not implemented yet!'
         end
+        -- If cannot find
+        if not filetext then  return nil  end
         -- Get lines
         local filetext = filetext .. '\n'
         local lines_after, line_i  =  {}, 0
@@ -264,6 +283,9 @@ local function determine_error_message (call_info, msg, condition)
     -- Get assert body.
     local body_text = get_assert_body_text(call_info)
 
+    -- If we couldn't find the body text, we give up.
+    if not body_text then  return  end
+
     -- Simplest formatting.
     -- No analysis of the assert-body, just report that it failed,
     -- along with it's body.