PythonTest

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using IronPython.Hosting;
using Microsoft.Scripting.Hosting;
using Shiji.Base;
using Shiji.HR.Dal;

namespace Test.Bll
{
    /// <summary>
    /// PythonTest 的摘要说明
    /// </summary>
    [TestClass]
    public class PythonTest
    {
        ScriptEngine engine;
        ScriptScope scope;

        public PythonTest()
        {
            engine = Python.CreateEngine();
            scope = engine.CreateScope();
        }

        private TestContext testContextInstance;

        /// <summary>
        ///获取或设置测试上下文，该上下文提供
        ///有关当前测试运行及其功能的信息。
        ///</summary>
        public TestContext TestContext
        {
            get
            {
                return testContextInstance;
            }
            set
            {
                testContextInstance = value;
            }
        }

        

        [TestMethod]
        public void 测试简单表达式()
        {
            var strExpression = "1+2";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            var actual = sourceCode.Execute<int>();

            Assert.AreEqual(3, actual);
        }

        [TestMethod]
        public void 测试传入变量()
        {
            var strExpression = "\"Hello:\" + str";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("str", "Python");
            var actual = sourceCode.Execute<string>(scope);
            scope.RemoveVariable("str");
            Assert.AreEqual("Hello:Python", actual);
        }


        [TestMethod]
        public void 测试C引用Python函数()
        {
            var strExpression = @"
def MyFunction(n):
    return 2*n 
                ";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression).Compile().Execute(scope);

            var func = engine.GetVariable<Func<int, int>>(scope, "MyFunction");

            Assert.AreEqual(0, func(0));
            Assert.AreEqual(2, func(1));
            Assert.AreEqual(4, func(2));
        }

        [TestMethod]
        public void 测试Python引用C函数()
        {
            var strExpression = "CMethod('Python')";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("CMethod", (Func<string, string>)TMethod);
            var actual = sourceCode.Execute<string>(scope);
            scope.RemoveVariable("CMethod");
            Assert.AreEqual("Hello:Python", actual);
        }

        public string TMethod(string info)
        {
            return "Hello:" + info;
        }

        [TestMethod]
        public void 测试Python引用C函数2()
        {
            var strExpression = "CMethod('Python')";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("CMethod", (Func<string, string>)T2Method);
            var actual = sourceCode.Execute<string>(scope);
            scope.RemoveVariable("CMethod");
            Assert.AreEqual("Hello:Python", actual);
        }

        public string T2Method(string info)
        {
            return TMethod(info);
        }

        [TestMethod]
        public void 测试Linq1()
        {
            var mc = App.DB.GetTable<HR_MetaClass>().First(p => p.Code == "HR_Catalog");
            //mc.HR_MetaProperty.Count
            //此处调用属性
            var strExpression = "mc.HR_MetaProperty.Count";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("mc", mc);
            var actual = sourceCode.Execute<int>(scope);
            scope.RemoveVariable("mc");
            Assert.AreEqual(12, actual);
        }

        [TestMethod]
        public void 测试Linq2()
        {
            var mc = App.DB.GetTable<HR_MetaClass>().First(p => p.Code == "HR_Catalog");
            //mc.HR_MetaProperty.Count
            //此处调用方法，具体可以参看http://blogs.msdn.com/sreekarc/archive/2007/05/01/extension-methods-and-delegates.aspx

            var strExpression = @"
import clr
clr.AddReference('System.Core')
from System.Linq import*
Enumerable.Count(mc.HR_MetaProperty)";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("mc", mc);
            var actual = sourceCode.Execute<int>(scope);
            scope.RemoveVariable("mc");
            Assert.AreEqual(12, actual);


        }

        [TestMethod]
        public void 测试Linq3()
        {
            var mc = App.DB.GetTable<HR_MetaClass>().First(p => p.Code == "HR_Catalog");
            var strExpression = @"
import clr
clr.AddReference('System.Core')
from System.Linq import*
Enumerable.First(mc.HR_MetaProperty,lambda p:p.Code=='Code')";
            var sourceCode = engine.CreateScriptSourceFromString(strExpression);
            scope.SetVariable("mc", mc);
            var actual = sourceCode.Execute<HR_MetaProperty>(scope);
            scope.RemoveVariable("mc");
            Assert.AreEqual("Code", actual.Code);
        }

    }
}