Linq2Sql-转换代码-Visual Studio 2012-单元测试

Question

I have been trying to convert the code below. I have attempted it and I will post the attempt beneath the code below. I am confused when it comes to

Code That I have to convert:

---

[TestMethod]
        public void SRSTransactiondataCleanTest()
        {
            using (SqlConnection sqlConn = new
               SqlConnection(@"Data Source=localhost;Initial Catalog=CorporateDWTest;Integrated Security=SSPI;"))
            {

                StringBuilder str = new StringBuilder();
                str.Append(@"SELECT * FROM [dbo].[SRS_Ticket_Transaction_Stage_Cleaned]");
                sqlConn.Open();
                SqlDataAdapter da = new SqlDataAdapter(str.ToString(), sqlConn);
                DataTable dResults = new DataTable();
                DataTable dAudit = new DataTable();
                da.Fill(dResults);

                da.SelectCommand.CommandText = @"SELECT [Table_Name],[Package_Name],[Execution_Start_Time],[Execution_End_Time],[Processing_Successful], Audit_Key," +
                    @"[Table_Initial_Row_Count],[Table_Final_Row_Count] FROM [SRS_Dim_Audit] WHERE Package_Name LIKE 'SAPSRSDataToStageClean'";

                da.Fill(dAudit);
                var r = dAudit.Rows[0][2].ToString();

                Assert.AreEqual(1, dAudit.Rows.Count);
                Assert.AreEqual("SRS_Ticket_Transaction_Stage_Cleaned", dAudit.Rows[0][0].ToString());
                Assert.AreEqual("SAPSRSDataToStageClean", dAudit.Rows[0][1].ToString());
                Assert.AreEqual(bool.TrueString, dAudit.Rows[0][4].ToString());
                Assert.IsTrue(int.Parse(dAudit.Rows[0][7].ToString()) > 10);
                Assert.IsTrue(dResults.Rows.Count > 50);
                Assert.AreEqual(int.Parse(dAudit.Rows[0][7].ToString()), dResults.Rows.Count);
                Assert.AreEqual(int.Parse(dAudit.Rows[0][5].ToString()), int.Parse(dResults.Rows[0][2].ToString()))
                sqlConn.Close();
            }
       }

---

What I have so far:

[TestMethod]
        public void SRSTransactiondataCleanTest()
        {
            using (var context = new CorporateDWTestEntities4())
            {
                var stageCleaned = context.SRS_Ticket_Transaction_Stage_Cleaned;
                var auditRecords = context.SRS_Dim_Audit.Where(s => s.Package_Name == "SAPSRSDataToStageClean");
                var auditRecord = auditRecords.FirstOrDefault();

                Assert.AreEqual(1, stageCleaned.Count());
                Assert.AreEqual(auditRecord.Table_Final_Row_Count, stageCleaned.Count());
                Assert.AreEqual(52, auditRecords.Count());
                Assert.AreEqual("SRS_Ticket_Transaction_Stage_Cleaned", auditRecord.Table_Name);
                Assert.AreEqual("SAPSRSDataToStageClean", auditRecord.Package_Name);
                Assert.AreEqual(true, auditRecord.Processing_Successful);
                Assert.IsTrue(auditRecord.Table_Final_Row_Count > 10);

            }
        }

---

I am fairly new at this code conversion stuff.. Am I on the right track? When I run this I recieve a message that states:

"Assert.AreEqual failed. Expected <1>. Actual <9461>."

When I change it to 9461, the entire test passes. Why is that? Am I using the wrong variable? I would just like to know if the code that I wrote is actually mirroring the code that I was to convert. I know with programming syntax must be meticulous. I was wondering if someone out there could review this and modify IF necessary.

Ps. the line:

  Assert.AreEqual(int.Parse(dAudit.Rows[0][5].ToString()), int.Parse(dResults.Rows[0][2].ToString()));

confused the hell out of me, What is that even asking of me?

Answer 1

Your first test should be

 Assert.AreEqual(1, auditRecords.Count());

rather than

Assert.AreEqual(1, stageCleaned.Count());

You also have a test

Assert.AreEqual(52, auditRecords.Count());

I can't see where you get 52 free. If this is supposed to be the equivalent of

Assert.IsTrue(dResults.Rows.Count > 50);

then it should be

Assert.IsTrue(stageCleaned.Count() > 50);

Not sure why you are confused by the line

 Assert.AreEqual(int.Parse(dAudit.Rows[0][5].ToString()), int.Parse(dResults.Rows[0][2].ToString()));

You must be very close as you have already worked out what all the other dAudit.Rows[0][...] values are, so presumably you know that int.Parse(dAudit.Rows[0][5].ToString()) represents auditRecord.Audit_Key (assuming this is defined as an int). Similarly dResults.Rows[0][2] will be the the third column of the first row from the SRS_Ticket_Transaction_Stage_Cleaned table.

So presumably this represents something like

var firstStageRecord = stageCleaned.First();
Assert.IsTrue(auditRecord.Audit_Key , firstStageRecord.xxx); 

where xxx is the name of the third column.

There are a few other issues to point out. If you have several calls to stageCleaned.Count(), it will issue a sql command each time is is called.

The original code was hard-coding the sqlConnection, whereas your new code is either using the default or picking up a connection from a configuration file, so you need to check to ensure you are talking to the correct database.