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unit Test11;
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{$mode objfpc}{$H+}
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{Test 11: Event Handling}
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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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interface
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uses
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Classes, SysUtils, TestApplication, IBXTestBase, IB, IBEvents,
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IBStoredProc;
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const
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aTestID = '11';
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aTestTitle = 'Event Handling';
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type
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{ TTest11 }
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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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implementation
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{ TTest11 }
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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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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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function TTest11.GetTestID: AnsiString;
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begin
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Result := aTestID;
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end;
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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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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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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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initialization
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RegisterTest(TTest11);
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end.
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