Add more tests

samples/back_button_test.lua

@@ -0,0 +1,21 @@
+local names = { "Test", "Blah", "Works?", "Or not?" }
+local colors = { "#FF5733", "#33FF57", "#3357FF", "#FF33A1" }
+
+function on_resume()
+ ui:show_toast("Called!")
+ shuffle(names)
+ shuffle(colors)
+ ui:show_buttons(names, colors)
+end
+
+function on_click(idx)
+ apps:launch("org.telegram.messenger")
+end
+
+function shuffle(t)
+ for i = #t, 2, -1 do
+  local j = math.random(1, i)
+  t[i], t[j] = t[j], t[i]
+ end
+end
+