tests: Test the naughty "suspended" mode.

tests/test-naughty-suspended.lua

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+local naughty = require("naughty")
+local notification = require("naughty.notification")
+
+local steps = {}
+
+-- Hijack the naughty.layout.box to track them.
+local real_box = getmetatable(naughty.layout.box).__call
+local boxes = {}
+
+getmetatable(naughty.layout.box).__call = function(_, args)
+    local ret = real_box(_, args)
+
+    table.insert(boxes, ret)
+
+    return ret
+end
+
+naughty.suspended = true
+
+local display_count, notifs = 0, setmetatable({}, {__mode = "v"})
+
+naughty.connect_signal("request::display", function()
+    display_count = display_count + 1
+end)
+
+table.insert(steps, function()
+    notifs[1] = notification {
+        title = "test1"
+    }
+
+    notifs[2] = notification {
+        title = "test2"
+    }
+
+    assert(display_count == 0)
+    assert((not notifs[1].timer) or not notifs[1].timer.started)
+    assert((not notifs[2].timer) or not notifs[2].timer.started)
+
+    return true
+end)
+
+table.insert(steps, function()
+    assert(display_count == 0)
+
+    naughty.suspended = false
+
+    assert(display_count == 2)
+    assert(#boxes == 2)
+    assert(notifs[1].timer.started)
+    assert(notifs[2].timer.started)
+
+    notifs[3] = notification {
+        title = "test2"
+    }
+
+    naughty.suspended = true
+
+    assert(display_count == 3)
+
+    return true
+end)
+
+table.insert(steps, function()
+    assert(display_count == 3)
+    assert(not boxes[1].visible)
+    assert(not boxes[2].visible)
+    assert((not notifs[1].timer) or not notifs[1].timer.started)
+    assert((not notifs[2].timer) or not notifs[2].timer.started)
+    assert((not notifs[3].timer) or not notifs[3].timer.started)
+
+    naughty.suspended = false
+
+    return true
+end)
+
+table.insert(steps, function()
+    assert(display_count == 6)
+    assert(not boxes[1].visible)
+    assert(not boxes[2].visible)
+    assert(boxes[4].visible)
+    assert(boxes[5].visible)
+    assert(boxes[6].visible)
+
+    assert(notifs[1].timer.started)
+    assert(notifs[2].timer.started)
+    assert(notifs[3].timer.started)
+
+    setmetatable(boxes, {__mode = "v"})
+
+    notifs[1]:destroy()
+    notifs[2]:destroy()
+    notifs[3]:destroy()
+
+    return true
+end)
+
+table.insert(steps, function()
+    collectgarbage("collect")
+
+    if #notifs > 0 then return end
+    if #boxes > 0 then return end
+
+    return true
+end)
+
+require("_runner").run_steps(steps)