test(awful: hotkeys_popup): add a minimal test

lib/awful/hotkeys_popup/widget.lua

@@ -100,9 +100,9 @@ function widget.new()
             ['#21']="=",
             Control="Ctrl"
         },
+        _cached_wiboxes = {}
     }
 
-    local cached_wiboxes = {}
     local cached_awful_keys = nil
     local colors_counter = {}
     local colors = beautiful.xresources.get_current_theme()
@@ -408,13 +408,13 @@ function widget.new()
         end
 
         local joined_groups = join_plus_sort(available_groups)
-        if not cached_wiboxes[s] then
-            cached_wiboxes[s] = {}
+        if not widget_instance._cached_wiboxes[s] then
+            widget_instance._cached_wiboxes[s] = {}
         end
-        if not cached_wiboxes[s][joined_groups] then
-            cached_wiboxes[s][joined_groups] = create_wibox(s, available_groups)
+        if not widget_instance._cached_wiboxes[s][joined_groups] then
+            widget_instance._cached_wiboxes[s][joined_groups] = create_wibox(s, available_groups)
         end
-        local help_wibox = cached_wiboxes[s][joined_groups]
+        local help_wibox = widget_instance._cached_wiboxes[s][joined_groups]
         help_wibox:show()
 
         return capi.keygrabber.run(function(_, key, event)

tests/test-awesomerc.lua

@@ -1,4 +1,5 @@
 local awful = require("awful")
+local hotkeys_widget = require("awful.hotkeys_popup").widget
 
 -- luacheck: globals modkey
 
@@ -15,6 +16,15 @@ local function get_c_and_t()
     return c, t
 end
 
+local function num_pairs(container_table)
+  local number_of_items = 0
+  for _, _ in pairs(container_table) do
+    number_of_items = number_of_items + 1
+  end
+  return number_of_items
+end
+
+
 -- display deprecated warnings
 --awful.util.deprecate = function() end
 
@@ -219,7 +229,41 @@ local steps = {
         assert(#tags[1]:clients() == 4)
 
         return true
-    end
+    end,
+
+    -- Hotkeys popup should be displayed and hidden
+    function(count)
+        local s = awful.screen.focused()
+        local cached_wiboxes = hotkeys_widget.default_widget._cached_wiboxes
+
+        if count == 1 then
+            assert(num_pairs(cached_wiboxes) == 0)
+            awful.key.execute({modkey}, "s")
+            return nil
+
+        elseif count == 2 then
+            assert(num_pairs(cached_wiboxes) > 0)
+            assert(num_pairs(cached_wiboxes[s]) == 1)
+        end
+
+        local hotkeys_wibox
+        for _, widget in pairs(cached_wiboxes[s]) do
+            hotkeys_wibox = widget.wibox
+        end
+
+        if count == 2 then
+            assert(hotkeys_wibox ~= nil)
+            assert(hotkeys_wibox.visible)
+            -- Should disappear on anykey
+            root.fake_input("key_press", "Super_L")
+
+        elseif count == 3 then
+            assert(not hotkeys_wibox.visible)
+            root.fake_input("key_release", "Super_L")
+            return true
+        end
+    end,
+
 }
 
 require("_runner").run_steps(steps)

tests/test-awful-widget-button.lua

@@ -88,9 +88,9 @@ table.insert(steps, function()
 end)
 
 table.insert(steps, function()
-assert(button._private.image ~= img)
+    assert(button._private.image ~= img)
 
-return true
+    return true
 end)
 
 -- Test a button release