Improve the error message for the current breakage (awesomeWM#2749)

The tests for naughty are currently broken, because naughty.dbus now uses Gio for interacting with DBus, but the tests still try to use awesome's dbus object. Turn the resulting weird error into something a lot less cryptic. Signed-off-by: Uli Schlachter <[email protected]>
SkyyySi · Apr 14, 2019 · 8218c30 · 8218c30
1 parent 9085ed6
commit 8218c30
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/tests/examples/naughty/template.lua b/tests/examples/naughty/template.lua
@@ -18,6 +18,14 @@ end
 
 local rect = {x1 = math.huge ,y1 = math.huge , x2 = -math.huge , y2 = -math.huge}
 
+if #drawin.get() == 0 then
+    -- The code below would calculate -math.huge - math.huge and end up trying
+    -- to draw something of size -math.huge times -math.huge. Turn this weird
+    -- error into a better error message.
+    error("Got no drawins to draw. "
+            .. "That's not good and would cause errors later on.")
+end
+
 -- Get the region with wiboxes
 for _, d in ipairs(drawin.get()) do
     local w = d.get_wibox and d:get_wibox() or nil