add some tests

tests/inputdialog.lua

@@ -0,0 +1,56 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you under the Apache License, Version 2.0 (the
+-- "License"); you may not use this file except in compliance
+-- with the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+-- 
+-- Copyright (C) 2015 - 2018, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        inputdialog.lua
+--
+require("tests/load")
+
+--  requires
+local ltui        = require("ltui")
+local label       = ltui.label
+local button      = ltui.button
+local application = ltui.application
+local event       = ltui.event
+local rect        = ltui.rect
+local inputdialog = ltui.inputdialog
+
+-- the demo application
+local demo = application()
+
+-- init demo
+function demo:init()
+
+    -- init name 
+    application.init(self, "demo")
+
+    -- init background
+    self:background_set("blue")
+
+    -- init input dialog
+    local dialog_input = inputdialog:new("dialog.input", rect {0, 0, 50, 8})
+    dialog_input:text():text_set("please input text:")
+    dialog_input:button_add("no", "< No >", function (v) dialog_input:quit() end)
+    dialog_input:button_add("yes", "< Yes >", function (v) dialog_input:quit() end)
+    self:insert(dialog_input, {centerx = true, centery = true})
+end
+
+-- run demo
+demo:run()