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tony |
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unit Test21; |
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{$mode objfpc}{$H+} |
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{Test 21: Big dataset test} |
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{ create a 100,000 record database. |
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read it back and check for errors using an MD5 message digest. |
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} |
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interface |
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uses |
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Classes, SysUtils, TestApplication, IBXTestBase, IB, IBSQL, MD5; |
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const |
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aTestID = '21'; |
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aTestTitle = 'Big dataset test'; |
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type |
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{ TTest21 } |
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TTest21 = class(TIBXTestBase) |
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private |
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FIBSQL: TIBSQL; |
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function StuffDatabase: TMDDigest; |
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function ReadDatabase: TMDDigest; |
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protected |
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procedure CreateObjects(Application: TTestApplication); override; |
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function GetTestID: AnsiString; override; |
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function GetTestTitle: AnsiString; override; |
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procedure InitTest; override; |
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public |
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procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override; |
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end; |
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implementation |
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uses DateUtils; |
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const |
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testText = 'The quick brown fox jumped over the lazy dog'; |
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RecordCount = 100000; |
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{ TTest21 } |
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function TTest21.StuffDatabase: TMDDigest; |
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var i: integer; |
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HashString: AnsiString; |
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MD5Context: TMDContext; |
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Started: TDateTime; |
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begin |
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Started := Now; |
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writeln(Outfile,'Loading data into database table. Started at ',DateTimeToStr(Started)); |
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MDInit(MD5Context,MD_VERSION_5); |
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IBTransaction.Active := true; |
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for i := 1 to RecordCount do |
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with FIBSQL do |
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begin |
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Params[0].AsInteger := i; |
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Params[1].AsString := DateTimeToStr(Now) + testText + testText + testText + testText; |
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Params[2].AsDateTime := Now; |
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HashString := Params[0].Asstring + Params[1].AsString + DateTimeToStr(Params[2].AsDateTime); |
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ExecQuery; |
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MDUpdate(MD5Context,PAnsiChar(HashString)^,Length(HashString)); |
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end; |
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IBTransaction.Commit; |
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MDFinal(MD5Context,Result); |
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writeln(OutFile, 'Data load completed at ',DateTimeToStr(Now), ' Elapsed Time = ', |
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(MilliSecondsBetween(Now,Started)),' ms, ',RecordCount,' records loaded'); |
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writeln(Outfile,' MD5 checksum = ',MD5Print(Result)); |
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end; |
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function TTest21.ReadDatabase: TMDDigest; |
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var MD5Context: TMDContext; |
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Started: TDateTime; |
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HashString: AnsiString; |
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Count: integer; |
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begin |
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MDInit(MD5Context,MD_VERSION_5); |
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IBTransaction.Active := true; |
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Started := Now; |
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Count := 0; |
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writeln(Outfile,'Database Read started at ',DateTimeToStr(Started)); |
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with IBQuery do |
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begin |
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Active := true; |
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while not EOF do |
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begin |
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Inc(Count); |
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HashString := Fields[0].AsString + Fields[1].AsString + DateTimeToStr(Fields[2].AsDateTime); |
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MDUpdate(MD5Context,PAnsiChar(HashString)^,Length(HashString)); |
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Next; |
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end; |
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end; |
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writeln(OutFile, 'Read Dataset completed at ',DateTimeToStr(Now), ' Elapsed Time = ', |
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(MilliSecondsBetween(Now,Started)), ' ms, ',Count,' records read'); |
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MDFinal(MD5Context,Result); |
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writeln(Outfile,' MD5 checksum = ',MD5Print(Result)); |
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end; |
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procedure TTest21.CreateObjects(Application: TTestApplication); |
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begin |
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inherited CreateObjects(Application); |
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FIBSQL := TIBSQL.Create(Application); |
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with FIBSQL do |
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begin |
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Database := IBDatabase; |
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Transaction := IBTransaction; |
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SQL.Text := 'Insert into LotsOfData(RowID,Mytext,theDate) Values(?,?,?)'; |
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ParamCheck := false; |
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end; |
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IBQuery.SQL.Text := 'Select RowID,MyText,theDate from LotsOfData'; |
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end; |
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function TTest21.GetTestID: AnsiString; |
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begin |
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Result := aTestID; |
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end; |
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function TTest21.GetTestTitle: AnsiString; |
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begin |
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Result := aTestTitle; |
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end; |
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procedure TTest21.InitTest; |
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begin |
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IBDatabase.DatabaseName := Owner.GetNewDatabaseName; |
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IBDatabase.CreateIfNotExists := true; |
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ReadWriteTransaction; |
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end; |
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procedure TTest21.RunTest(CharSet: AnsiString; SQLDialect: integer); |
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var Digest: TMD5Digest; |
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begin |
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IBDatabase.CreateDatabase; |
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try |
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Digest := StuffDatabase; {This creates a database holding a large 100,000 record table} |
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if MD5Match(Digest,ReadDatabase) then |
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writeln(Outfile,'Test Completed successfully') |
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else |
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writeln(Outfile,'Test failed. MD5 checksum error'); |
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finally |
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IBDatabase.DropDatabase; |
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end; |
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end; |
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initialization |
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RegisterTest(TTest21); |
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end. |
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