testcases.cs

sqlite 3.3.8 支持加密的版本

      using (DbCommand cmd = cnn.CreateCommand())
      {
        cmd.CommandText = "INSERT INTO TestCase(Field6) VALUES(@bin)";
        DbParameter Field6 = cmd.CreateParameter();

        byte[] b = new byte[4000];
        b[0] = 1;
        b[100] = 2;
        b[1000] = 3;
        b[2000] = 4;
        b[3000] = 5;

        Field6.ParameterName = "@bin";
        Field6.Value = b;

        cmd.Parameters.Add(Field6);

        cmd.ExecuteNonQuery();
      }
    }

    internal static void VerifyBinaryData(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        cmd.CommandText = "SELECT Field6 FROM TestCase WHERE Field6 IS NOT NULL";
        byte[] b = new byte[4000];

        using (DbDataReader rd = cmd.ExecuteReader())
        {
          if (rd.Read() == false) throw new ArgumentOutOfRangeException();

          rd.GetBytes(0, 0, b, 0, 4000);

          if (b[0] != 1) throw new ArgumentException();
          if (b[100] != 2) throw new ArgumentException();
          if (b[1000] != 3) throw new ArgumentException();
          if (b[2000] != 4) throw new ArgumentException();
          if (b[3000] != 5) throw new ArgumentException();
        }
      }
    }

    internal static void LockTest(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        cmd.CommandText = "SELECT Field6 FROM TestCase WHERE Field6 IS NOT NULL";
        byte[] b = new byte[4000];

        using (DbDataReader rd = cmd.ExecuteReader())
        {
          if (rd.Read() == false) throw new ArgumentOutOfRangeException();

          rd.GetBytes(0, 0, b, 0, 4000);

          if (b[0] != 1) throw new ArgumentException();
          if (b[100] != 2) throw new ArgumentException();
          if (b[1000] != 3) throw new ArgumentException();
          if (b[2000] != 4) throw new ArgumentException();
          if (b[3000] != 5) throw new ArgumentException();

          using (DbConnection clone = (DbConnection)((ICloneable)cnn).Clone())
          {
            using (DbCommand newcmd = clone.CreateCommand())
            {
              newcmd.CommandText = "DELETE FROM TestCase WHERE Field6 IS NULL";
              newcmd.CommandTimeout = 2;
              int cmdStart = Environment.TickCount;
              int cmdEnd;

              try
              {
                newcmd.ExecuteNonQuery(); // should fail because there's a reader on the database
                throw new ArgumentException(); // If we got here, the test failed
              }
              catch
              {
                cmdEnd = Environment.TickCount;
                if (cmdEnd - cmdStart < 2000 || cmdEnd - cmdStart > 3000)
                  throw new ArgumentException(); // Didn't wait the right amount of time

              }
            }
          }
        }
      }
    }

    internal static void ParameterizedInsertMissingParams(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        cmd.CommandText = "INSERT INTO TestCase(Field1, Field2, Field3, Field4, Field5) VALUES(?,?,?,?,?)";
        DbParameter Field1 = cmd.CreateParameter();
        DbParameter Field2 = cmd.CreateParameter();
        DbParameter Field3 = cmd.CreateParameter();
        DbParameter Field4 = cmd.CreateParameter();
        DbParameter Field5 = cmd.CreateParameter();

        Field1.DbType = System.Data.DbType.Int32;

        Field1.Value = 2;
        Field2.Value = 3.14159;
        Field3.Value = "Field3 Param";
        Field4.Value = "Field4 Par";
        Field5.Value = DateTime.Now;

        cmd.Parameters.Add(Field1);
        cmd.Parameters.Add(Field2);
        cmd.Parameters.Add(Field3);
        cmd.Parameters.Add(Field4);

        // Assertion here, not enough parameters
        cmd.ExecuteNonQuery();
      }
    }

    // Utilizes the SQLiteCommandBuilder, 
    // which in turn utilizes SQLiteDataReader's GetSchemaTable() functionality
    // This insert is slow because it must raise callbacks before and after every update.
    // For a fast update, see the FastInsertMany function beneath this one
    internal static void DataAdapter(DbProviderFactory fact, DbConnection cnn, bool bWithIdentity)
    {
      using (DbTransaction dbTrans = cnn.BeginTransaction())
      {
        using (DbDataAdapter adp = fact.CreateDataAdapter())
        {
          using (DbCommand cmd = cnn.CreateCommand())
          {
            cmd.Transaction = dbTrans;
            cmd.CommandText = "SELECT * FROM TestCase WHERE 1 = 2";
            adp.SelectCommand = cmd;

            using (DbCommandBuilder bld = fact.CreateCommandBuilder())
            {
              bld.DataAdapter = adp;
              using (adp.InsertCommand = (DbCommand)((ICloneable)bld.GetInsertCommand()).Clone())
              {
                if (bWithIdentity)
                {
                  adp.InsertCommand.CommandText += ";SELECT last_insert_rowid() AS [ID]";
                  adp.InsertCommand.UpdatedRowSource = UpdateRowSource.FirstReturnedRecord;
                }
                bld.DataAdapter = null;

                using (DataTable tbl = new DataTable())
                {
                  adp.Fill(tbl);
                  for (int n = 0; n < 10000; n++)
                  {
                    DataRow row = tbl.NewRow();
                    row[1] = n + (50000 * ((bWithIdentity == true) ? 2 : 1));
                    tbl.Rows.Add(row);
                  }

                  Console.WriteLine(String.Format("          Inserting using CommandBuilder and DataAdapter\r\n          ->{0} (10,000 rows) ...", (bWithIdentity == true) ? "(with identity fetch)" : ""));
                  int dtStart = Environment.TickCount;
                  adp.Update(tbl);
                  int dtEnd = Environment.TickCount;
                  dtEnd -= dtStart;
                  Console.Write(String.Format("          -> Insert Ends in {0} ms ... ", (dtEnd)));

                  dtStart = Environment.TickCount;
                  dbTrans.Commit();
                  dtEnd = Environment.TickCount;
                  dtEnd -= dtStart;
                  Console.WriteLine(String.Format("Commits in {0} ms", (dtEnd)));
                }
              }
            }
          }
        }
      }
    }

    internal static void FastInsertMany(DbConnection cnn)
    {
      using (DbTransaction dbTrans = cnn.BeginTransaction())
      {
        int dtStart;
        int dtEnd;

        using (DbCommand cmd = cnn.CreateCommand())
        {
          cmd.CommandText = "INSERT INTO TestCase(Field1) VALUES(?)";
          DbParameter Field1 = cmd.CreateParameter();

          cmd.Parameters.Add(Field1);

          Console.WriteLine(String.Format("          Fast insert using parameters and prepared statement\r\n          -> (100,000 rows) Begins ... "));
          dtStart = Environment.TickCount;
          for (int n = 0; n < 100000; n++)
          {
            Field1.Value = n + 200000;
            cmd.ExecuteNonQuery();
          }

          dtEnd = Environment.TickCount;
          dtEnd -= dtStart;
          Console.Write(String.Format("          -> Ends in {0} ms ... ", (dtEnd)));
        }

        dtStart = Environment.TickCount;
        dbTrans.Commit();
        dtEnd = Environment.TickCount;
        dtEnd -= dtStart;
        Console.WriteLine(String.Format("Commits in {0} ms", (dtEnd)));
      }
    }

    // Causes the user-defined function to be called
    internal static void UserFunction(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        int nTimes;
        int dtStart;

        nTimes = 0;
        cmd.CommandText = "SELECT Foo('ee','foo')";
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          cmd.ExecuteNonQuery();
          nTimes++;
        }
        Console.WriteLine(String.Format("          User (text)  command executed {0} times in 1 second.", nTimes));

        nTimes = 0;
        cmd.CommandText = "SELECT Foo(10,11)";
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          cmd.ExecuteNonQuery();
          nTimes++;
        }
        Console.WriteLine(String.Format("          UserFunction command executed {0} times in 1 second.", nTimes));

        nTimes = 0;
        cmd.CommandText = "SELECT ABS(1)";
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          cmd.ExecuteNonQuery();
          nTimes++;
        }
        Console.WriteLine(String.Format("          Intrinsic    command executed {0} times in 1 second.", nTimes));

        nTimes = 0;
        cmd.CommandText = "SELECT lower('FOO')";
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          cmd.ExecuteNonQuery();
          nTimes++;
        }
        Console.WriteLine(String.Format("          Intrin (txt) command executed {0} times in 1 second.", nTimes));

        nTimes = 0;
        cmd.CommandText = "SELECT 1";
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          cmd.ExecuteNonQuery();
          nTimes++;
        }
        Console.WriteLine(String.Format("          Raw Value    command executed {0} times in 1 second.", nTimes));
      }
    }

    internal static void IterationTest(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        int dtStart;
        int dtEnd;
        int nCount;
        long n;

        cmd.CommandText = "SELECT Foo(ID, ID) FROM TestCase";
        cmd.Prepare();
        dtStart = Environment.TickCount;
        nCount = 0;
        using (DbDataReader rd = cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            n = rd.GetInt64(0);
            nCount++;
          }
          dtEnd = Environment.TickCount;
        }
        Console.WriteLine(String.Format("          User Function iteration of {0} records in {1} ms", nCount, (dtEnd - dtStart)));

        cmd.CommandText = "SELECT ID FROM TestCase";
        cmd.Prepare();
        dtStart = Environment.TickCount;
        nCount = 0;
        using (DbDataReader rd = cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            n = rd.GetInt64(0);
            nCount++;
          }
          dtEnd = Environment.TickCount;
        }
        Console.WriteLine(String.Format("          Raw iteration of {0} records in {1} ms", nCount, (dtEnd - dtStart)));

        cmd.CommandText = "SELECT ABS(ID) FROM TestCase";
        cmd.Prepare();
        dtStart = Environment.TickCount;
        nCount = 0;
        using (DbDataReader rd = cmd.ExecuteReader())
        {
          while (rd.Read())
          {
            n = rd.GetInt64(0);
            nCount++;
          }
          dtEnd = Environment.TickCount;
        }
        Console.WriteLine(String.Format("          Intrinsic Function iteration of {0} records in {1} ms", nCount, (dtEnd - dtStart)));

      }
    }

    // Open a reader and then attempt to write to test the writer's command timeout property
    // SQLite doesn't allow a write when a reader is active.
    internal static void TimeoutTest(DbConnection cnn)
    {
      using (DbCommand cmdRead = cnn.CreateCommand())
      {
        cmdRead.CommandText = "SELECT ID FROM TestCase";
        using (DbDataReader rd = cmdRead.ExecuteReader())
        {
          using (DbCommand cmdwrite = cnn.CreateCommand())
          {
            cmdwrite.CommandText = "UPDATE [TestCase] SET [ID] = [ID]";
            cmdwrite.CommandTimeout = 5;

            int dwtick = Environment.TickCount;
            try
            {
              cmdwrite.ExecuteNonQuery();
            }
            catch (SQLiteException)
            {
              dwtick = (Environment.TickCount - dwtick) / 1000;
              if (dwtick < 5 || dwtick > 6)
                throw new ArgumentOutOfRangeException();
            }
          }
        }
      }
    }

    // Causes the user-defined aggregate to be iterated through
    internal static void UserAggregate(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        int dtStart;
        int n = 0;
        int nCount;

        cmd.CommandText = "SELECT MyCount(*) FROM TestCase";

        nCount = 0;
        dtStart = Environment.TickCount;
        while (Environment.TickCount - dtStart < 1000)
        {
          n = Convert.ToInt32(cmd.ExecuteScalar());
          nCount++;
        }
        if (n != 120003) throw new ArgumentOutOfRangeException("Unexpected count");
        Console.WriteLine(String.Format("          UserAggregate executed {0} times in 1 second.", nCount));
      }
    }

    // Causes the user-defined collation sequence to be iterated through
    internal static void UserCollation(DbConnection cnn)
    {
      using (DbCommand cmd = cnn.CreateCommand())
      {
        // Using a default collating sequence in descending order, "Param Field3" will appear at the top
        // and "Field3" will be next, followed by a NULL.  Our user-defined collating sequence will 
        // deliberately place them out of order so Field3 is first.
        cmd.CommandText = "SELECT Field3 FROM TestCase ORDER BY Field3 COLLATE MYSEQUENCE DESC";
        string s = (string)cmd.ExecuteScalar();
        if (s != "Field3") throw new ArgumentOutOfRangeException("MySequence didn't sort properly");
      }
    }
  }
}