camerauis/cameraxui/cxengine/tsrc/unit/unittest_cxestatemachine/unittest_cxestatemachine.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 14:51:30 +0300
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permissions -rw-r--r--
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <QTest>
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#include "unittest_cxestatemachine.h"
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#include "cxestate.h"
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#include "cxestatemachineunit.h"
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#include "cxeerrormappingsymbian.h" // CxeErrorHandlingSymbian
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// -----------------------------------
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// CxsStateMachine
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// -----------------------------------
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UnitTestCxeStateMachine::UnitTestCxeStateMachine()
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: mStateMachine(NULL), mStartState(NULL), mMiddleState(NULL), mEndState(NULL), mIsolatedState(NULL)
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{
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}
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UnitTestCxeStateMachine::~UnitTestCxeStateMachine()
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{
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}
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// Run before each individual test case
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void UnitTestCxeStateMachine::init()
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{
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    // create instance of the unit to be tested
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    mStateMachine = new CxeStateMachineUnit("UnitTestCxeStateMachine");
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    // create test data (CxeState class is tested separated, so we assume it works correctly)
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    // these state classes are according to specification,
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    // error input is created in that particular test case
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    mStartState = new CxeState(StartId, "Start", MiddleId); // starting state
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    mMiddleState = new CxeState(MiddleId, "Middle", StartId|EndId|MiddleId); // middle state, "normal"
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    mEndState = new CxeState(EndId, "End", 0); // cannot transfer to other states
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    mIsolatedState = new CxeState(IsolatedId, "Isolated", MiddleId); // cannot be set after any other state
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    QVERIFY(mStateMachine->addState(mStartState));
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    QVERIFY(mStateMachine->addState(mMiddleState));
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    QVERIFY(mStateMachine->addState(mEndState));
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    QVERIFY(mStateMachine->addState(mIsolatedState));
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}
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// Run after each individual test case
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void UnitTestCxeStateMachine::cleanup()
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{
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    // state machine takes ownership of the states when states are added to statemachine
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    // those are deleted when statemachine is deleted
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    delete mStateMachine;
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    mStateMachine = NULL;
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    mStartState = NULL;
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    mMiddleState = NULL;
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    mEndState = NULL;
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    mIsolatedState = NULL;
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}
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void UnitTestCxeStateMachine::testAddState(){
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    // test error cases ( OK cases are tested in init )
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    CxeState* mErrorState = NULL;
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    // add same state twice -> NOK
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    QVERIFY(!mStateMachine->addState(mStartState));
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    // stateId should not have overlapping bits, because we need to be able to use bitwise
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    // AND operator -> NOK
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    mErrorState = new CxeState(5, "Overlapping id", StartId|MiddleId);
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    QVERIFY(!mStateMachine->addState(mErrorState));
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    delete mErrorState;
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    // add state with negative id -> NOK
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    mErrorState = new CxeState(-1, "Negative id", StartId|MiddleId);
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    QVERIFY(!mStateMachine->addState(mErrorState));
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    delete mErrorState;
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    // add null state -> NOK
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    QVERIFY(!mStateMachine->addState(NULL));
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}
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void UnitTestCxeStateMachine::testSetState()
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{
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    // CxeStateMachine::setState
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    // sets a state, verifies the that change is allowed, informs about the state change
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    // NOTE: check that handleStateChange is called, when state changes (correct parameters)
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    // NOTE: check that correct stateid is returned after change
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    // NOTE: verifyStateChange has separate testing
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    // reset the counter for handleStateChanged slot
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    mStateMachine->mHandleStateChangedCounter = 0;
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    // set state, when initial state is not set -> NOK
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    // check that handleStateChange is not called
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    // current state is undefined
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    QVERIFY(!mStateMachine->setState(StartId, 2));
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    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 0);
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    QCOMPARE(mStateMachine->stateId(), 0);
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   112
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    // set start state as initial state, change to another state (allowed change) -> OK
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   114
    // (there should be a call to state change, check the error code)
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   115
    mStateMachine->setInitialState(StartId);
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   116
    QVERIFY(mStateMachine->setState(MiddleId, 0));
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   117
    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 1);
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   118
    QVERIFY(mStateMachine->mStateChangeStateId == MiddleId);
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   119
    QVERIFY(mStateMachine->mStateChangeErrorId == CxeErrorHandlingSymbian::map(0));
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    QVERIFY(mStateMachine->stateId() == MiddleId);
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   121
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    // set another state (allowed change) -> OK
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   123
    // check the error code is correct one (return value is mapped error value)
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   124
    QVERIFY(mStateMachine->setState(EndId, -1));
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   125
    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 2);
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   126
    QVERIFY(mStateMachine->mStateChangeStateId == EndId);
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    QVERIFY(mStateMachine->mStateChangeErrorId == CxeErrorHandlingSymbian::map(-1));
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   128
    QVERIFY(mStateMachine->stateId() == EndId);
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   129
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    // reset the counter for handleStateChanged slot
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   131
    mStateMachine->mHandleStateChangedCounter = 0;
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   132
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    // set same state again -> OK
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   134
    // but state change should not be called
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   135
    QVERIFY(mStateMachine->setState(EndId, 0));
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   136
    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 0);
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   137
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   138
    // setstate to a state that does not exists -> NOK
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   139
    // state has not changed
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   140
    QVERIFY(mStateMachine->stateId() == EndId);
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   141
    QVERIFY(!mStateMachine->setState(UnknownId));
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   142
    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 0);
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   143
    QVERIFY(mStateMachine->stateId() == EndId);
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   144
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   145
    // state change verification method has own test cases
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   146
}
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   147
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   148
void UnitTestCxeStateMachine::testSetInitialState()
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{
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    // CxeStateMachine::setInitialState
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    // sets a initial state
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    // check that handleStateChange is not called
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    // check that correct state has been set
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   154
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   155
    // set state, when initial state is not set -> OK
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    QVERIFY(mStateMachine->setInitialState(StartId));
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    QVERIFY(mStateMachine->stateId() == StartId);
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    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 0);
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   159
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   160
    // set state, when initial state is already set -> NOK
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   161
    QVERIFY(!mStateMachine->setInitialState(MiddleId));
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   162
    QVERIFY(mStateMachine->stateId() == StartId);
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    QCOMPARE(mStateMachine->mHandleStateChangedCounter, 0);
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   164
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}
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   166
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void UnitTestCxeStateMachine::testStateId()
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{
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   169
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   170
    // check state id, when initial state not set -> stateid == 0
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   171
    QCOMPARE(mStateMachine->stateId(), 0);
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   172
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   173
    // setinitialstate -> check state id
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   174
    mStateMachine->setInitialState(StartId);
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   175
    QVERIFY(mStateMachine->stateId() == StartId);
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   176
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   177
}
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   178
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void UnitTestCxeStateMachine::testVerifyStateChange()
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{
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    // test change possibilities
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    // initial START -> MIDDLE -> OK
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    // START -> END -> NOK
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   185
    // START -> ISOLATED -> NOK
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    // START -> 0 -> NOK
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   187
    // START -> UnknownId -> NOK
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   188
    // START -> START -> NOK (since START is not defined in allowed next state)
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   189
    mStateMachine->setInitialState(StartId);
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   190
    QVERIFY(mStateMachine->verifyStateChange(MiddleId));
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   191
    QVERIFY(!mStateMachine->verifyStateChange(EndId));
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   192
    QVERIFY(!mStateMachine->verifyStateChange(IsolatedId));
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    QVERIFY(!mStateMachine->verifyStateChange(0));
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   194
    QVERIFY(!mStateMachine->verifyStateChange(UnknownId));
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   195
    QVERIFY(!mStateMachine->verifyStateChange(StartId));
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   196
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   197
    // MIDDLE -> ISOLATED -> NOK
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   198
    // MIDDLE -> START -> OK
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   199
    // MIDDLE -> END -> OK
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   200
    // MIDDLE -> 0 -> NOK
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   201
    // MIDDLE -> MIDDLE -> OK (defined in allowed next states)
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   202
    mStateMachine->setState(MiddleId);
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   203
    QVERIFY(!mStateMachine->verifyStateChange(IsolatedId));
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   204
    QVERIFY(mStateMachine->verifyStateChange(StartId));
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    QVERIFY(mStateMachine->verifyStateChange(EndId));
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    QVERIFY(!mStateMachine->verifyStateChange(0));
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   207
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    // END -> MIDDLE -> NOK
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    // END -> START -> NOK
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    // END -> 0 -> NOK
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   211
    // END -> UnknownId -> NOK
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   212
    mStateMachine->setState(EndId);
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   213
    QVERIFY(!mStateMachine->verifyStateChange(MiddleId));
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    QVERIFY(!mStateMachine->verifyStateChange(StartId));
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    QVERIFY(!mStateMachine->verifyStateChange(0));
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    QVERIFY(!mStateMachine->verifyStateChange(UnknownId));
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   217
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}
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   219
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   220
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// main() function non-GUI testing
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QTEST_APPLESS_MAIN(UnitTestCxeStateMachine);
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   223