mitkVerboseLimitedLinearUndoTest.cpp

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/*===================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center,
Division of Medical and Biological Informatics.
All rights reserved.

This software is distributed WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.

See LICENSE.txt or http://www.mitk.org for details.

===================================================================*/

#include "mitkInteractionConst.h"
#include "mitkOperation.h"
#include "mitkUndoController.h"
#include "mitkVerboseLimitedLinearUndo.h"

#include "mitkTestingMacros.h"

#include <iostream>

int g_GlobalCounter = 0;

namespace mitk
{
  class TestOperation : public Operation
  {
  public:
    TestOperation(OperationType operationType) : Operation(operationType) { g_GlobalCounter++; };
    virtual ~TestOperation() { g_GlobalCounter--; };
  };
} // namespace

int mitkVerboseLimitedLinearUndoTest(int /* argc */, char * /*argv*/ [])
{
  // always start with this!
  MITK_TEST_BEGIN("VerboseLimitedLinearUndo")

  // an UndoController for the management
  auto myUndoController = new mitk::UndoController();

  // set model, even if it is verboseLimitedLinearUndo by default; this already is tested by UndoControllerTest!
  myUndoController->SwitchUndoModel(mitk::UndoController::VERBOSE_LIMITEDLINEARUNDO);

  for (int i = 0; i < 2; i++)
  {
    auto doOp = new mitk::TestOperation(mitk::OpTEST);
    auto undoOp = new mitk::TestOperation(mitk::OpTEST);
    mitk::OperationEvent *operationEvent = new mitk::OperationEvent(nullptr, doOp, undoOp, "Test");
    myUndoController->SetOperationEvent(operationEvent);
    // increase the ID to separate the operationEvents from each other. Otherwise they would be undone all together at
    // once.
    mitk::OperationEvent::IncCurrObjectEventId();
  }

  // now 2 * 2 operation should have been instanciated
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 4, "checking initialization of mitkOperation");

  // undo one operation; 1 operationEvent element in undo list, 1 in Redo list
  myUndoController->Undo();

  // sending two new OperationEvents: RedoList should be deleted and memory of operations freed
  for (int i = 0; i < 2; i++)
  {
    auto doOp = new mitk::TestOperation(mitk::OpTEST);
    auto undoOp = new mitk::TestOperation(mitk::OpTEST);
    mitk::OperationEvent *operationEvent = new mitk::OperationEvent(nullptr, doOp, undoOp, "Test");
    myUndoController->SetOperationEvent(operationEvent);
    // increase the ID to separate the operationEvents from each other. Otherwise they would be undone all together at
    // once.
    mitk::OperationEvent::IncCurrObjectEventId();
  }

  // 2 operations should have been deleted, 4 should have been added
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 6, "checking adding of operations");

  // two operations to RedoList
  myUndoController->Undo();
  myUndoController->ClearRedoList();

  // one operationEvent containing 2 operations should have been deleted
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 4, "checking deleting RedoList");

  // clear all
  myUndoController->Clear();
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 0, "checking deleting all operations in UndoModel");

  // sending two new OperationEvents
  for (int i = 0; i < 2; i++)
  {
    auto doOp = new mitk::TestOperation(mitk::OpTEST);
    auto undoOp = new mitk::TestOperation(mitk::OpTEST);
    mitk::OperationEvent *operationEvent = new mitk::OperationEvent(nullptr, doOp, undoOp, "Test");
    myUndoController->SetOperationEvent(operationEvent);
    // increase the ID to separate the operationEvents from each other. Otherwise they would be undone all together at
    // once.
    mitk::OperationEvent::IncCurrObjectEventId();
  }
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 4, "checking added operations in UndoModel");

  delete myUndoController;

  // after deleting UndoController g_GlobalCounter will still be 4 because m_CurrentUndoModel inside myUndoModel is a
  // static singleton
  MITK_TEST_CONDITION_REQUIRED(g_GlobalCounter == 4, "checking singleton UndoModel");

  // always end with this!
  MITK_TEST_END()
  // operations will be deleted after terminating the application
}