Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
528 views
in Technique[技术] by (71.8m points)

c# - VS Team Test: .Net Unit Testing with Excel as Data Source: Adapter Failed

I am trying to do Unit Testing with Excel as data source. I am getting the following exception. How do we correct it?

The unit test adapter failed to connect to the data source or to read the data. For more information on troubleshooting this error, see "Troubleshooting Data-Driven Unit Tests"


  [TestMethod]
  [Owner("Lijo ")]
  [TestProperty("TestCategory", "Developer"), 
      DataSource("Microsoft.ACE.OLEDB.12.0", 
     "Data Source=C:/Sheets/DataSheet.xlsx;Extended Properties=Excel 12.0;",
     "[Sheet1$]", 
     DataAccessMethod.Sequential)]
  public void ChangePasswordTest()
  {

     int a = Convert.ToInt32(TestContext.DataRow[0]); //(int)Column.UserId
     int b = Convert.ToInt32(TestContext.DataRow[1]);
     int expectedResult = Convert.ToInt32(TestContext.DataRow[2]);

     MyClass myObj = new MyClass(1, "P@ssw0rd");
     int actualResult = myObj.GetAdditionResult(a, b);
     Assert.AreEqual<int>(expectedResult, actualResult, "The addition result is incorrect.");

  }

Readings:

  1. Unit Testing Error - The unit test adapter failed to connect to the data source or to read the data

  2. Data driven unit tests problem

  3. How to create Startup and Cleanup script for Visual Studio Test Project?

  4. How Does MSTEST/Visual Studio 2008 Team Test Decide Test Method Execution Order?

  5. Visual Studio 2010 Ultimate - Data Generation Plan Setting Incorrect Data Type for Column

  6. How should I unit-test a simple CRUD-class?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

I faded a same task today. And after some headaches I was able to solve without app.config:

[TestMethod]
[DataSource("System.Data.OleDB",
  @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:SheetsDataSheet.xlsx; Extended Properties='Excel 12.0;HDR=yes';",
  "Sheet1$",
  DataAccessMethod.Sequential
)]       
public void ChangePasswordTest()
{
 //Arrange

 //Act

 //Assert

}

If you use excel files as resources in your testproject, you have to set the Copy to Output Directory property of the file to Copy always or Copy if newer. And add the DeploymentItem attribute to your test:

[TestMethod]
[DataSource("System.Data.OleDB",
  @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source=.DataSheet.xlsx; Extended Properties='Excel 12.0;HDR=yes';",
  "Sheet1$",
  DataAccessMethod.Sequential
)]       
[DeploymentItem(".DataSheet.xlsx")]
public void ChangePasswordTest()
{
 //Arrange

 //Act

 //Assert

}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...