Several minor fixes (#3057)

1. Android.getScreenBrightness() is used in frontend/device/android/powerd.lua to retrieve the frontlight intensity.
2. kosync.koplugin won't save settings for whisper sync.
3. batterstat.koplugin won't work correctly if several on* events are fired.

frontend/device/android/powerd.lua

@@ -6,7 +6,8 @@ local AndroidPowerD = BasePowerD:new{
     fl_intensity = 10,
 }
 
-function AndroidPowerD:init()
+function AndroidPowerD:frontlightIntensityHW()
+    return android.getScreenBrightness()
 end
 
 function AndroidPowerD:setIntensityHW(intensity)

plugins/batterystat.koplugin/main.lua

@@ -168,28 +168,36 @@ end
 
 function BatteryStat:onSuspend()
     self:debugOutput("onSuspend")
-    self.was_suspending = false
+    if not self.was_suspending then
-    self:accumulate()
+        self:accumulate()
+    end
+    self.was_suspending = true
 end
 
 function BatteryStat:onResume()
     self:debugOutput("onResume")
-    self.was_suspending = true
+    if self.was_suspending then
-    self:accumulate()
+        self:accumulate()
+    end
+    self.was_suspending = false
 end
 
 function BatteryStat:onCharging()
     self:debugOutput("onCharging")
-    self.was_charging = false
+    if not self.was_charging then
-    self:reset(true, false)
+        self:reset(true, false)
-    self:accumulate()
+        self:accumulate()
+    end
+    self.was_charging = true
 end
 
 function BatteryStat:onNotCharging()
     self:debugOutput("onNotCharging")
-    self.was_charging = true
+    if self.was_charging then
-    self:reset(false, true)
+        self:reset(false, true)
-    self:accumulate()
+        self:accumulate()
+    end
+    self.was_charging = false
 end
 
 function BatteryStat:showStatistics()
@@ -277,6 +285,8 @@ local BatteryStatWidget = WidgetContainer:new{
 }
 
 function BatteryStatWidget:init()
+    -- self.ui is nil in test cases.
+    if not self.ui or not self.ui.menu then return end
     self.ui.menu:registerToMainMenu(self)
 end
 
@@ -309,4 +319,9 @@ function BatteryStatWidget:onNotCharging()
     BatteryStat:onNotCharging()
 end
 
+-- Test only
+function BatteryStatWidget:stat()
+    return BatteryStat
+end
+
 return BatteryStatWidget

plugins/kosync.koplugin/main.lua

@@ -131,7 +131,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_forward == SYNC_STRATEGY.WHISPER
                         end,
                         callback = function()
-                            self.kosync_whisper_forward = SYNC_STRATEGY.WHISPER
+                            self:setWhisperForward(SYNC_STRATEGY.WHISPER)
                         end,
                     },
                     {
@@ -140,7 +140,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_forward == SYNC_STRATEGY.PROMPT
                         end,
                         callback = function()
-                            self.kosync_whisper_forward = SYNC_STRATEGY.PROMPT
+                            self:setWhisperForward(SYNC_STRATEGY.PROMPT)
                         end,
                     },
                     {
@@ -149,7 +149,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_forward == SYNC_STRATEGY.DISABLE
                         end,
                         callback = function()
-                            self.kosync_whisper_forward = SYNC_STRATEGY.DISABLE
+                            self:setWhisperForward(SYNC_STRATEGY.DISABLE)
                         end,
                     },
                     {
@@ -162,7 +162,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_backward == SYNC_STRATEGY.WHISPER
                         end,
                         callback = function()
-                            self.kosync_whisper_backward = SYNC_STRATEGY.WHISPER
+                            self:setWhisperBackward(SYNC_STRATEGY.WHISPER)
                         end,
                     },
                     {
@@ -171,7 +171,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_backward == SYNC_STRATEGY.PROMPT
                         end,
                         callback = function()
-                            self.kosync_whisper_backward = SYNC_STRATEGY.PROMPT
+                            self:setWhisperBackward(SYNC_STRATEGY.PROMPT)
                         end,
                     },
                     {
@@ -180,7 +180,7 @@ function KOSync:addToMainMenu(menu_items)
                             return self.kosync_whisper_backward == SYNC_STRATEGY.DISABLE
                         end,
                         callback = function()
-                            self.kosync_whisper_backward = SYNC_STRATEGY.DISABLE
+                            self:setWhisperBackward(SYNC_STRATEGY.DISABLE)
                         end,
                     },
                 },
@@ -226,6 +226,16 @@ function KOSync:setCustomServer(server)
     self:saveSettings()
 end
 
+function KOSync:setWhisperForward(strategy)
+    self.kosync_whisper_forward = strategy
+    self:saveSettings()
+end
+
+function KOSync:setWhisperBackward(strategy)
+    self.kosync_whisper_backward = strategy
+    self:saveSettings()
+end
+
 function KOSync:login()
     if not NetworkMgr:isOnline() then
         NetworkMgr:promptWifiOn()

spec/unit/batterystat_spec.lua

@@ -0,0 +1,185 @@
+describe("BatteryState plugin tests", function()
+    local MockTime, module
+
+    local stat = function()
+        return module:new():stat()
+    end,
+
+    setup(function()
+        require("commonrequire")
+        package.unloadAll()
+        MockTime = require("mock_time")
+        MockTime:install()
+    end)
+
+    teardown(function()
+        MockTime:uninstall()
+        package.unloadAll()
+    end)
+
+    before_each(function()
+        module = dofile("plugins/batterystat.koplugin/main.lua")
+    end)
+
+    it("should record charging time", function()
+        local widget = stat()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onCharging()
+        assert.is_true(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        -- awake & charging time should be reset.
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(1, widget.charging.time)
+
+        widget:onNotCharging()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        -- awake & discharging time should be reset.
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(1, widget.charging.time)
+
+        widget:onCharging()
+        assert.is_true(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        -- awake & charging time should be reset.
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(1, widget.charging.time)
+    end)
+
+    it("should record suspending time", function()
+        local widget = stat()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onSuspend()
+        assert.is_false(widget.was_charging)
+        assert.is_true(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(1, widget.sleeping.time)
+        assert.are.equal(2, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onResume()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(2, widget.awake.time)
+        assert.are.equal(1, widget.sleeping.time)
+        assert.are.equal(3, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onSuspend()
+        assert.is_false(widget.was_charging)
+        assert.is_true(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(2, widget.awake.time)
+        assert.are.equal(2, widget.sleeping.time)
+        assert.are.equal(4, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+    end)
+
+    it("should not swap the state when several charging events fired", function()
+        local widget = stat()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onCharging()
+        assert.is_true(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        -- awake & charging time should be reset.
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(1, widget.charging.time)
+
+        widget:onCharging()
+        assert.is_true(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(2, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(2, widget.charging.time)
+    end)
+
+    it("should not swap the state when several suspending events fired", function()
+        local widget = stat()
+        assert.is_false(widget.was_charging)
+        assert.is_false(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(0, widget.sleeping.time)
+        assert.are.equal(1, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onSuspend()
+        assert.is_false(widget.was_charging)
+        assert.is_true(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(1, widget.sleeping.time)
+        assert.are.equal(2, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onSuspend()
+        assert.is_false(widget.was_charging)
+        assert.is_true(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(2, widget.sleeping.time)
+        assert.are.equal(3, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+
+        widget:onSuspend()
+        assert.is_false(widget.was_charging)
+        assert.is_true(widget.was_suspending)
+        MockTime:increase(1)
+        widget:accumulate()
+        assert.are.equal(1, widget.awake.time)
+        assert.are.equal(3, widget.sleeping.time)
+        assert.are.equal(4, widget.discharging.time)
+        assert.are.equal(0, widget.charging.time)
+    end)
+end)