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unit Test11; |
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|
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{$mode objfpc}{$H+} |
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|
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{Test 11: Event Handling} |
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|
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{ This tests calling an event handler in response to a database event. |
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A simple database is used consisting of a stored procedure only. |
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Two cases are tested: event registration before and after DB Open. |
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} |
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|
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interface |
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|
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uses |
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Classes, SysUtils, TestApplication, IBXTestBase, IB, IBEvents, |
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IBStoredProc; |
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|
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const |
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aTestID = '11'; |
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aTestTitle = 'Event Handling'; |
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|
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type |
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|
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{ TTest11 } |
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|
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TTest11 = class(TIBXTestBase) |
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private |
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FEvents: TIBEvents; |
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FExecProc: TIBStoredProc; |
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procedure EventHandler( Sender: TObject; EventName: string; EventCount: longint; |
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var CancelAlerts: Boolean); |
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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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|
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|
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implementation |
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|
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{ TTest11 } |
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|
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procedure TTest11.EventHandler(Sender: TObject; EventName: string; |
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EventCount: longint; var CancelAlerts: Boolean); |
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begin |
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writeln(OutFile,'Event Handled: ',EventName, ', Count = ',EventCount); |
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end; |
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|
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procedure TTest11.CreateObjects(Application: TTestApplication); |
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begin |
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inherited CreateObjects(Application); |
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FEvents := TIBEvents.Create(Application); |
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FEvents.Database := IBDatabase; |
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FEvents.OnEventAlert := @EventHandler; |
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FEvents.Events.Add('EVENT1'); |
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FEvents.Events.Add('EVENT2'); |
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FExecProc := TIBStoredProc.Create(Application); |
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FExecProc.Database := IBDatabase; |
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end; |
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|
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function TTest11.GetTestID: AnsiString; |
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begin |
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Result := aTestID; |
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end; |
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|
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function TTest11.GetTestTitle: AnsiString; |
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begin |
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Result := aTestTitle; |
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end; |
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|
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procedure TTest11.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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|
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procedure TTest11.RunTest(CharSet: AnsiString; SQLDialect: integer); |
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begin |
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writeln(OutFile,'Case #1: Deferred Event Registration'); |
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FEvents.DeferredRegister := true; |
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IBDatabase.Connected := true; |
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try |
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IBTransaction.Active := true; |
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CheckSynchronize(1); |
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FExecProc.StoredProcName := 'CALLEVENT'; |
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FExecProc.Prepare; |
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FExecProc.Params[0].AsString := 'EVENT1'; |
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FExecProc.ExecProc; |
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writeln(OutFile,'Event Called'); |
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IBTransaction.Commit; |
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CheckSynchronize(5); |
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finally |
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IBDatabase.DropDatabase; |
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end; |
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writeln(OutFile,'Case #2: Event Registration after DB Open'); |
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IBDatabase.Connected := true; |
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try |
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FEvents.Registered := true; |
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IBTransaction.Active := true; |
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CheckSynchronize(1); |
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FExecProc.StoredProcName := 'CALLEVENT'; |
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FExecProc.Prepare; |
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FExecProc.Params[0].AsString := 'EVENT2'; |
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FExecProc.ExecProc; |
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writeln(OutFile,'Event Called'); |
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IBTransaction.Commit; |
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CheckSynchronize(5); |
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Sleep(1000); |
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FEvents.UnRegisterEvents; |
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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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|
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initialization |
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RegisterTest(TTest11); |
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|
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end. |
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