try-catch C#的方法

时间:2014-07-31 07:45:25

标签: c# coded-ui-tests

我有一个小问题,我必须尝试捕获我当前正在使用的每个记录方法(编码UI测试项目),以便生成一个txt文件,我在其中看到测试结果。 这就是它的样子:

[TestMethod(), TestCategory("Actions"), TestCategory("DataDriven"), DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", @"|DataDirectory|\Actiuni\actions.csv", "actions#csv", DataAccessMethod.Sequential), DeploymentItem(@"..\Actiuni\actions.csv")]
public void ActionsInsertDataDrivenTest()
{
    methodNumber = 6;
    methName = "ActionsInsertDataDrivenTest";
    firstTime = true;
    var actionTest = new ActionsMap();

    //open actions
    try
    {
        actionTest.ActionsOpen();
        listaObj.Add("ActionsOpen()", "Passed ! ");
    }
    catch (Exception e) 
    {
        validator = false;
        listaObj.Add("ActionsOpen()", "Failed: " + e.Message);
    }
    //remove collumns
    try
    {
        actionTest.Actions_header_remove_colls();
        listaObj.Add("Actions_header_remove_colls()", "Passed ! ");
    }
    catch (Exception e)
    {
        validator = false;
        listaObj.Add("Actions_header_remove_colls()", "Failed: " + e.Message);
    }
   //click grid
    try
    {
        actionTest.Actions_click_insert_header();
        listaObj.Add("Actions_click_insert_header()", "Passed !");
    }
    catch (Exception e)
    {
        validator = false;
        listaObj.Add("Actions_click_insert_header()", "Failed : " + e.Message);
    }

我唯一的问题是我有重复的代码这一事实,我必须尝试捕获每个方法是一个痛苦,所以我想到制作一个可以自动为我做这个的void方法,但我失败了这样做。

void tryCatch(ActionsColMap object1, (methodofobject1), Boolean a, Boolean b{
}

问题是我不知道如何将方法传递给这个函数,它是一个可以使用object1调用的编码ui测试方法。有什么办法吗?我没有尝试使用Action()[for void methods]

TestCleanup + Asserts

[TestCleanup]
public void TestCleanup()
{
    string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
    string date = DateTime.Now.ToString("MM-dd-yyyy");
    string realName = methodName + "_" + date + "_" + "Test";
    string fullPath = path + @"\" + realName + ".txt";


    if (!File.Exists(fullPath))
    {

        // using (System.IO.StreamWriter file = new System.IO.StreamWriter(path + @"\testDoc.txt"))
        using (System.IO.StreamWriter file = new System.IO.StreamWriter(fullPath))
        {

            file.WriteLine("Test: " + methodName);
            //file.WriteLine("Full Class Name: " + TestContext.FullyQualifiedTestClassName + " Method name: " + methName);
            //file.WriteLine("Date: " + DateTime.Now.ToString("MM-dd-yyyy HH:mm ss tt "));
            file.WriteLine(" ");

        }
    }
    else
    {
        //firstTime = true;
        // firstCounter = 0;

    }

    //XML decl---


    //-----------------------

    var lv1s = from lv1 in xDoc.Descendants("codedUITest")
               where lv1.Attribute("name").Value.Contains(methName)
               select new
               {
                   //Header = lv1.Attribute("name").Value,
                   Children = lv1.Descendants("description")
               };


    foreach (var lv1 in lv1s)
    {

        foreach (var lv2 in lv1.Children)
        {
            result.Clear();
            result.Append(lv2.Attribute("name").Value);
            list.Add(result.ToString());

        }
        // file.WriteLine(result);


    }

    //-------------------------------

    foreach (KeyValuePair<string, string> testMethod in listaObj)
    {
        counter++;
        //listaObj2 = listaObj;

        // MessageBox.Show(counter.ToString());


        using (System.IO.StreamWriter file = new System.IO.StreamWriter(fullPath, true))
        {

            if (firstTime == true && firstCounter == 0)
            {
                file.Write(" ");
                file.WriteLine("Full Class Name: " + TestContext.FullyQualifiedTestClassName + "Method Name: " + methName);
                file.WriteLine("Date: " + DateTime.Now.ToString("MM-dd-yyyy HH:mm ss tt "));
                file.WriteLine(" ");
                firstTime = false;
                firstCounter++;
            }



            // file.WriteLine(testMethod);

            for (; listCounter < list.Count; )
            {
                //  file.WriteLine(testMethod + " -- > " + list[listCounter]);
                file.WriteLine("-----" + list[listCounter]);
                file.WriteLine(testMethod);
               // file.WriteLine(" ");
                listCounter++;
                break;
            }


            if (counter % methodNumber == 0)
            {
                if (counter != methodNumber)
                {
                    file.WriteLine("Phase " + secondCounter.ToString() + " complete ! -----------------");
                    file.WriteLine(" ");

                    //Delete all this  block in case of problems--------

                    counter = 0;
                   // firstCounter = 0;
                   // secondCounter = 0;
                    listCounter = 0;
                    list = new List<string>();
                    listaObj = new Dictionary<string, string>();

                    //---------------------------------------------------------
                    //---------------------------------------------------------

                }
                else
                {
                    file.WriteLine("Phase " + secondCounter.ToString() + " complete ! -----------------");
                    file.WriteLine(" ");
                    // file.WriteLine("Full Class Name: " + TestContext.FullyQualifiedTestClassName + "Method name: " + methName);
                    //file.WriteLine("Date: " + DateTime.Now.ToString("MM-dd-yyyy HH:mm ss tt "));
                    file.WriteLine(" ");
                }

            }
        }

    }
    //Assert if the parent test was passed or not.
    Assert.IsTrue(validator, "One or more inner tests were failed.");

}

3 个答案:

答案 0 :(得分:3)

看起来你正在寻找这样的东西:

using System;
using System.Collections.Generic;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Tuple<string, string>> results = new List<Tuple<string, string>>();
            bool validator = true;

            TryCatch(Pass, results, ref validator);
            TryCatch(Fail, results, ref validator);
        }

        private static void Pass()
        {
        }

        private static void Fail()
        {
            throw new Exception("oops");
        }

        private static void TryCatch(Action action, List<Tuple<string, string>> results, ref bool validator)
        {
            try
            {
                action();
                results.Add(Tuple.Create(action.Method.DeclaringType.FullName + "." + action.Method.Name, "Passed !"));
            }
            catch (Exception ex)
            {
                validator = false;
                results.Add(Tuple.Create(action.Method.DeclaringType.FullName + "." + action.Method.Name, "Failed : " + ex.Message));
            }
        }
    }
}

虽然我可能老实说不会遇到这个麻烦,并为单元测试做正确的事情,这是每个单元测试测试一件事。

编辑评论:

  

这里的小问题:问题在于我无法仅仅因为虚空而致电   方法本身,我还需要一个对象的引用。有点像   void(Action action){try {myObjectReference.action(); //等   } catch(例外){bool = false; // etc}}

问题是C#中的方法本身并不存在。始终在类型上定义方法,即MethodInfo.DeclaringType。

所以要做你正在寻找你的事情,必须编写尴尬的代码,如:

void TryCatch(object thing, Action action)
{
   action.Method.Invoke(thing);
}

然后你必须处理你试图调用Foo上定义的方法的情况,当事物实际上是没有方法的Bar实例时。那你会得到一个例外。它也很奇怪,因为动作参数已经带有实例,如果有实例,并且你忽略它,那么更正确的答案可能是:

void TryCatch(object thing, MethodInfo method)
{
   method.Invoke(thing);
}

因为它并没有随身携带你公然忽略的信息,但是然后调用者必须进行反射以找到方法,如果该方法不在你传入的对象上,你还有问题。

我原来的答案是相对安全的,因为它应该总是对需要调用的内容有一个明确的答案,试图分离你试图调用方法的实例(和可能的类型),以及你是什么方法试图打电话总是会给你留下你必须解决的问题。

感觉就像是在尝试将其视为一种无类型语言,并且它不是。类型很重要。

答案 1 :(得分:1)

嗯,我想你需要的只是方法名称,它会导致异常,所以你可以像下面那样: -

您需要TargetSite来获取导致异常的方法

//open actions
            try
            {
                actionTest.ActionsOpen();
                listaObj.Add("ActionsOpen()", "Passed ! ");
                actionTest.Actions_header_remove_colls();
                listaObj.Add("Actions_header_remove_colls()", "Passed ! ");
                actionTest.Actions_click_insert_header();
                listaObj.Add("Actions_click_insert_header()", "Passed !");
            }
            catch (Exception e) 
            {
                validator = false;
                MethodBase site = ex.TargetSite;
                string methodName = site == null ? null : site.Name;
                listaObj.Add(methodName, "Failed: " + e.Message);
            }

答案 2 :(得分:1)

这些应该是单独的测试,但你应该有一些断言,否则这些测试只会传递空方法。

private ActionsMap actionTest;

[TestInitialize]
public void Setup()
{
  actionTest = new ActionsMap();
}

[TestMethod]
public void can_open()
{
  actionTest.ActionsOpen();
  //asserts?
}

[TestMethod]
public void can_remove_header_columns()
{
  actionTest.ActionsOpen(); //assuming next method depends on this
  actionTest.Actions_header_remove_colls();
  //asserts?
}

[TestMethod]
public void can_insert_header_column()
{
  actionTest.ActionsOpen(); //assuming next method depends on this
  actionTest.Actions_header_remove_colls(); //assuming next method depends on this
  actionTest.Actions_click_insert_header();
  //asserts?
}
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