tests: The the piechart widget.

tests/examples/wibox/widget/piechart/border_color.lua

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+--DOC_HIDE_ALL
+local parent    = ...
+local wibox     = require( "wibox"     )
+local beautiful = require( "beautiful" )
+
+local l = wibox.layout.fixed.horizontal()
+parent:add(l)
+
+for _, v in ipairs {"#ff0000", "#00ff00", "#0000ff"} do
+    l:add(wibox.widget {
+        data = {
+            ['L1'] = 100,
+            ['L2'] = 200,
+            ['L3'] = 300,
+        },
+        border_width = 1,
+        border_color = v,
+        forced_height = 50,
+        forced_width  = 100,
+        colors = {
+            beautiful.bg_normal,
+            beautiful.bg_highlight,
+            beautiful.border_color,
+        },
+        widget = wibox.widget.piechart
+    })
+end

tests/examples/wibox/widget/piechart/border_width.lua

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+--DOC_HIDE_ALL
+local parent    = ...
+local wibox     = require( "wibox"     )
+local beautiful = require( "beautiful" )
+
+local l = wibox.layout.fixed.horizontal()
+parent:add(l)
+
+for _, v in ipairs {0,1,3,5} do
+    l:add(wibox.widget {
+        data = {
+            ['L1'] = 100,
+            ['L2'] = 200,
+            ['L3'] = 300,
+        },
+        border_width = v,
+        forced_height = 50,
+        forced_width  = 100,
+        colors = {
+            beautiful.bg_normal,
+            beautiful.bg_highlight,
+            beautiful.border_color,
+        },
+        widget = wibox.widget.piechart
+    })
+end

tests/examples/wibox/widget/piechart/label.lua

@@ -0,0 +1,68 @@
+--DOC_HIDE_ALL
+local parent    = ...
+local wibox     = require( "wibox"     )
+local beautiful = require( "beautiful" )
+
+parent:add(wibox.widget {
+    {
+        {
+            markup = "<b>display_labels</b> = <i>false</i>",
+            widget = wibox.widget.textbox
+        },
+        {
+            {
+                data = {
+                    ['L1'] = 100,
+                    ['L2'] = 200,
+                    ['L3'] = 300,
+                },
+                border_width = 1,
+                forced_height = 50,
+                forced_width  = 100,
+                display_labels = false,
+                colors = {
+                    beautiful.bg_normal,
+                    beautiful.bg_highlight,
+                    beautiful.border_color,
+                },
+                widget = wibox.widget.piechart
+            },
+            margins = 1,
+            color  = beautiful.border_color,
+            layout = wibox.container.margin,
+        },
+        layout = wibox.layout.fixed.vertical
+    },
+    {
+        {
+            markup = "<b>display_labels</b> = <i>true</i>",
+            widget = wibox.widget.textbox
+        },
+        {
+            {
+                data = {
+                    ['L1'] = 100,
+                    ['L2'] = 200,
+                    ['L3'] = 300,
+                },
+                border_width = 1,
+                forced_height = 50,
+                forced_width  = 100,
+                display_labels = true,
+                colors = {
+                    beautiful.bg_normal,
+                    beautiful.bg_highlight,
+                    beautiful.border_color,
+                },
+                widget = wibox.widget.piechart
+            },
+            margins = 1,
+            color  = beautiful.border_color,
+            layout = wibox.container.margin,
+        },
+        layout = wibox.layout.fixed.vertical
+    },
+    layout = wibox.layout.flex.horizontal
+})
+
+return 500, 60