test(fix): clean up after screenshot test

frontend/ui/uimanager.lua

@@ -152,7 +152,6 @@ end
 -- modal widget should be always on the top
 -- for refreshtype & refreshregion see description of setDirty()
 function UIManager:show(widget, refreshtype, refreshregion, x, y)
-    dbg("show widget", widget._name)
     self._running = true
     local window = {x = x or 0, y = y or 0, widget = widget}
     -- put this window on top of the toppest non-modal window

spec/unit/nickel_conf_spec.lua

@@ -1,8 +1,11 @@
-require("commonrequire")
-local lfs = require("libs/libkoreader-lfs")
-local NickelConf = require("device/kobo/nickel_conf")
-
 describe("Nickel configuation module", function()
+    local lfs, NickelConf
+    setup(function()
+        require("commonrequire")
+        lfs = require("libs/libkoreader-lfs")
+        NickelConf = require("device/kobo/nickel_conf")
+    end)
+
     describe("Frontlight module", function()
         it("should read value", function()
             local fn = os.tmpname()

spec/unit/screenshoter_spec.lua

@@ -1,20 +1,21 @@
-require("commonrequire")
-local DocumentRegistry = require("document/documentregistry")
-local ReaderUI = require("apps/reader/readerui")
-local lfs = require("libs/libkoreader-lfs")
-local UIManager = require("ui/uimanager")
-local Screen = require("device").screen
-local Event = require("ui/event")
-local DEBUG = require("dbg")
-
 describe("ReaderScreenshot module", function()
+    local DocumentRegistry, ReaderUI, lfs, UIManager, Screen, Event
     local sample_epub = "spec/front/unit/data/leaves.epub"
     local readerui
     setup(function()
+        require("commonrequire")
+        DocumentRegistry = require("document/documentregistry")
+        ReaderUI = require("apps/reader/readerui")
+        lfs = require("libs/libkoreader-lfs")
+        UIManager = require("ui/uimanager")
+        Screen = require("device").screen
+        Event = require("ui/event")
+
         readerui = ReaderUI:new{
             document = DocumentRegistry:openDocument(sample_epub),
         }
     end)
+
     it("should get screenshot in portrait", function()
         local name = "screenshots/reader_screenshot_portrait.png"
         readerui:handleEvent(Event:new("ChangeScreenMode", "portrait"))
@@ -24,7 +25,9 @@ describe("ReaderScreenshot module", function()
         UIManager:run()
         readerui.screenshot:onScreenshot(name)
         assert.truthy(lfs.attributes(name, "mode"))
+        UIManager:quit()
     end)
+
     it("should get screenshot in landscape", function()
         local name = "screenshots/reader_screenshot_landscape.png"
         readerui:handleEvent(Event:new("ChangeScreenMode", "landscape"))
@@ -34,5 +37,6 @@ describe("ReaderScreenshot module", function()
         UIManager:run()
         readerui.screenshot:onScreenshot(name)
         assert.truthy(lfs.attributes(name, "mode"))
+        UIManager:quit()
     end)
 end)