/** if a state defines a entry action then the execution state must have a entryAction. */
  @Test
  public void testStateEntryAction() {
    Statechart sc = _createStatechart("test");
    Scope scope = _createInterfaceScope("interface", sc);
    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, scope);
    Region r = _createRegion("main", sc);
    Entry e = _createEntry(EntryKind.INITIAL, null, r);
    State s1 = _createState("s1", r);
    State s2 = _createState("s2", r);
    _createTransition(e, s1);
    _createTransition(s1, s2);
    LocalReaction entryAction = _createEntryAction(s2);
    _createVariableAssignment(
        v1, AssignmentOperator.ASSIGN, _createValue(42), (ReactionEffect) entryAction.getEffect());

    ExecutionFlow flow = sequencer.transform(sc);

    ExecutionState _s1 = flow.getStates().get(0);
    ExecutionState _s2 = flow.getStates().get(1);
    assertEquals(s1.getName(), _s1.getSimpleName());
    assertEquals(s2.getName(), _s2.getSimpleName());

    assertNotNull(_s2.getEntryAction());
    assertNull(_s1.getEntryAction());
  }
  /** Local reactions must be created for behavior with 'always' trigger */
  @Test
  public void testAlwaysLocalReaction() {

    Statechart sc = _createStatechart("test");
    Scope scope = _createInterfaceScope("interface", sc);
    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, scope);
    Region r = _createRegion("main", sc);
    State s = _createState("s", r);

    LocalReaction timeTriggeredReaction =
        _createLocalReaction(s, StextFactory.eINSTANCE.createAlwaysEvent());
    AssignmentExpression assign =
        _createVariableAssignment(
            v1,
            AssignmentOperator.ASSIGN,
            _createValue(42),
            (ReactionEffect) timeTriggeredReaction.getEffect());

    ExecutionFlow flow = sequencer.transform(sc);

    ExecutionState _s = flow.getStates().get(0);

    // assert that a local reaction is created
    Reaction reaction = _s.getReactions().get(0);
    PrimitiveValueExpression pve = (PrimitiveValueExpression) reaction.getCheck().getCondition();
    assertBoolLiteral(true, pve.getValue());
  }
  /**
   * If a entry trigger is combined with a guard condition then the entry action is executed
   * conditionally with this trigger.
   */
  @Test
  public void testExitActionWithoutGuard() {

    Statechart sc = _createStatechart("test");
    Scope scope = _createInterfaceScope("interface", sc);
    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, scope);
    Region r = _createRegion("main", sc);
    Entry e = _createEntry(EntryKind.INITIAL, null, r);
    State s1 = _createState("s1", r);
    State s2 = _createState("s2", r);
    _createTransition(e, s1);
    _createTransition(s1, s2);
    LocalReaction exitAction = _createExitAction(s2);
    _createVariableAssignment(
        v1, AssignmentOperator.ASSIGN, _createValue(42), (ReactionEffect) exitAction.getEffect());
    // ((ReactionTrigger)entryAction.getTrigger()).setGuardExpression(_createValue(true));

    ExecutionFlow flow = sequencer.transform(sc);

    ExecutionState _s1 = flow.getStates().get(0);
    ExecutionState _s2 = flow.getStates().get(1);
    assertEquals(s1.getName(), _s1.getSimpleName());
    assertEquals(s2.getName(), _s2.getSimpleName());

    Sequence _exitSeq = (Sequence) _s2.getExitAction();

    assertClass(Sequence.class, _exitSeq.getSteps().get(0));
    assertAssignment(
        ((Sequence) _exitSeq.getSteps().get(0)).getSteps().get(0),
        "v1",
        AssignmentOperator.ASSIGN,
        "42");
  }
  /** The exit action must be part of the reaction effect sequence */
  @SuppressWarnings("unused")
  @Test
  public void testStateReaction_WithEntryAction() {
    SimpleFlatTSC tsc = new SimpleFlatTSC();

    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, tsc.s_scope);
    LocalReaction entryAction = _createEntryAction(tsc.s2);
    AssignmentExpression assign =
        _createVariableAssignment(
            v1,
            AssignmentOperator.ASSIGN,
            _createValue(21),
            (ReactionEffect) entryAction.getEffect());

    ExecutionFlow flow = sequencer.transform(tsc.sc);

    // test state with one outgoing transition
    ExecutionState _s1 = flow.getStates().get(0);
    ExecutionState _s2 = flow.getStates().get(1);
    assertEquals(tsc.s1.getName(), _s1.getSimpleName());
    assertEquals(tsc.s2.getName(), _s2.getSimpleName());

    assertEquals(1, _s1.getReactions().size());
    Reaction reaction = _s1.getReactions().get(0);

    assertNotNull(reaction.getCheck());

    assertNotNull(reaction.getEffect());
    Sequence seq = (Sequence) reaction.getEffect();
    assertEquals(2, seq.getSteps().size());

    assertCall(seq, 0, _s1.getExitSequence());
    assertCall(seq, 1, _s2.getEnterSequences().get(0));
    assertCall(_s2.getEnterSequences().get(0), 0, _s2.getEntryAction());
  }
  /**
   * A leaf state must have a enter sequence. This enter sequence consists of an entry action call
   * and a state enter step.
   */
  @SuppressWarnings("unused")
  @Test
  public void testLeafStateEnterSequence() {
    Statechart sc = _createStatechart("cs");
    Scope scope = _createInterfaceScope("interface", sc);
    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, scope);
    Region r = _createRegion("r", sc);
    State s1 = _createState("s1", r);
    LocalReaction entryAction = _createEntryAction(s1);
    _createVariableAssignment(
        v1, AssignmentOperator.ASSIGN, _createValue(42), (ReactionEffect) entryAction.getEffect());

    Entry e = _createEntry(EntryKind.INITIAL, null, r);
    Transition t = _createTransition(e, s1);

    ExecutionFlow flow = sequencer.transform(sc);

    ExecutionState _s1 = flow.getStates().get(0);
    assertEquals(s1.getName(), _s1.getSimpleName());

    assertNotNull(_s1.getEntryAction());
    assertNotNull(_s1.getEnterSequences().get(0));
    assertEquals(2, _s1.getEnterSequences().get(0).getSteps().size());

    assertCall(_s1.getEnterSequences().get(0), 0, _s1.getEntryAction());

    assertClass(EnterState.class, _s1.getEnterSequences().get(0).getSteps().get(1));
  }
 @Check(CheckType.FAST)
 public void checkLocalReaction(LocalReaction localReaction) {
   if (localReaction.eContainer() instanceof InterfaceScope) {
     error(
         "Local reactions are not allowed in interface scope.",
         localReaction,
         StextPackage.Literals.LOCAL_REACTION__PROPERTIES,
         ValidationMessageAcceptor.INSIGNIFICANT_INDEX);
   }
 }
  @Test
  public void testSingleLocalTimeTrigger() {

    Statechart sc = _createStatechart("test");
    Scope scope = _createInterfaceScope("interface", sc);
    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, scope);
    Region r = _createRegion("main", sc);
    State s = _createState("s", r);

    LocalReaction timeTriggeredReaction =
        _createTimeTriggeredReaction(s, TimeEventType.AFTER, _createValue(2), TimeUnit.MILLISECOND);
    AssignmentExpression assign =
        _createVariableAssignment(
            v1,
            AssignmentOperator.ASSIGN,
            _createValue(42),
            (ReactionEffect) timeTriggeredReaction.getEffect());

    ExecutionFlow flow = sequencer.transform(sc);

    Scope timerScope = flow.getScopes().get(1);
    assertTrue(timerScope.getDeclarations().get(0) instanceof TimeEvent);

    TimeEvent te = (TimeEvent) timerScope.getDeclarations().get(0);

    // assert that the reaction check checks the time event
    ExecutionState _s = flow.getStates().get(0);

    // assert the scheduling of the time event during state entry
    assertNotNull(_s.getEntryAction());
    Sequence entryAction = (Sequence) _s.getEntryAction();
    ScheduleTimeEvent ste = (ScheduleTimeEvent) entryAction.getSteps().get(0);
    assertSame(te, ste.getTimeEvent());
    PrimitiveValueExpression value = (PrimitiveValueExpression) ste.getTimeValue();
    assertIntLiteral(2, value.getValue());
    assertNotNull(_s.getExitAction());
    Sequence exitAction = (Sequence) _s.getExitAction();
    UnscheduleTimeEvent ute = (UnscheduleTimeEvent) exitAction.getSteps().get(0);
    assertSame(te, ute.getTimeEvent());
  }
  /**
   * Local reactions that define regular and entry triggers side by side must also be part of the
   * cycle steps.
   */
  @SuppressWarnings("unused")
  @Test
  public void testStateCycle_LocalReactionWithMixedRegularAndEntryTrigger() {
    MinimalTSC tsc = new MinimalTSC();

    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, tsc.s_scope);

    // add a simple entry action: "entry / x=42;"
    LocalReaction lr = _createEntryAction(tsc.s1);
    _createRegularEventSpec(tsc.e1, (ReactionTrigger) lr.getTrigger());
    ReactionEffect lr_eff = _createReactionEffect(lr);
    AssignmentExpression assign1 =
        _createVariableAssignment(v1, AssignmentOperator.ASSIGN, _createValue(42), lr_eff);

    // TRANSFORM
    ExecutionFlow flow = sequencer.transform(tsc.sc);

    // test state with one outgoing transition
    ExecutionState s1 = flow.getStates().get(0);

    assertEquals(1, s1.getReactions().size());
    assertNotNull(s1.getReactSequence());
    assertEquals(1, s1.getReactSequence().getSteps().size());

    Sequence _seq = (Sequence) s1.getReactSequence().getSteps().get(0);

    If _lr1 =
        (If)
            assertedSequence(assertedSequence(_seq.getSteps().get(0)).getSteps().get(0))
                .getSteps()
                .get(0);
    assertClass(ElementReferenceExpression.class, _lr1.getCheck().getCondition());
    assertSame(s1.getReactions().get(0).getCheck().getCondition(), _lr1.getCheck().getCondition());
    Call _lr1_eff_call = (Call) _lr1.getThenStep();
    assertSame(s1.getReactions().get(0).getEffect(), _lr1_eff_call.getStep());
  }
  /** The state cycle must contain all reactions of parent states. */
  @SuppressWarnings("unused")
  @Test
  public void testStateCycle_WithParent() {

    Statechart sc = _createStatechart("sc");
    {
      InterfaceScope s_scope = _createInterfaceScope("Interface", sc);
      VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, s_scope);
      EventDefinition e1 = _createEventDefinition("e1", s_scope);

      Region r = _createRegion("r", sc);
      {
        State s1 = _createState("s1", r);
        {
          // a local reaction: "e1 / x=42;"
          LocalReaction lr1 = _createLocalReaction(s1, null);
          _createRegularEventSpec(e1, (ReactionTrigger) lr1.getTrigger());
          ReactionEffect lr1_eff = _createReactionEffect(lr1);
          AssignmentExpression assign1 =
              _createVariableAssignment(v1, AssignmentOperator.ASSIGN, _createValue(42), lr1_eff);

          Region r_s1 = _createRegion("r", s1);
          {
            State s3 = _createState("s3", r_s1);
            {
              _createEntryAssignment(v1, s3, 2);

              Region r_s3 = _createRegion("r", s3);
              {
                State s4 = _createState("s4", r_s3);
                _createEntryAssignment(v1, s4, 3);

                State s5 = _createState("s5", r_s3);
              }
            }
          }
        }
        State s2 = _createState("s2", r);
        {
          Region r_s1 = _createRegion("r", s2);
          {
            _createState("s6", r_s1);
          }
        }
      }

      Transition t_s4_s5 = _createTransition(findState(sc, "s4"), findState(sc, "s5"));
      _createReactionTrigger(t_s4_s5);
      _createRegularEventSpec(e1, (ReactionTrigger) t_s4_s5.getTrigger());

      Transition t_s3_s6 = _createTransition(findState(sc, "s3"), findState(sc, "s6"));
      _createReactionTrigger(t_s3_s6);
      _createRegularEventSpec(e1, (ReactionTrigger) t_s3_s6.getTrigger());
    }

    ExecutionFlow flow = sequencer.transform(sc);

    ExecutionState _s1 = flow.getStates().get(0);
    assertEquals("sc.r.s1", _s1.getName());

    ExecutionState _s3 = flow.getStates().get(1);
    assertEquals("sc.r.s1.r.s3", _s3.getName());

    ExecutionState _s4 = flow.getStates().get(2);
    assertEquals("sc.r.s1.r.s3.r.s4", _s4.getName());

    ExecutionState _s6 = flow.getStates().get(5);
    assertEquals("sc.r.s2.r.s6", _s6.getName());

    Sequence cycle = _s4.getReactSequence();

    Sequence _seq = (Sequence) cycle.getSteps().get(0);

    // first entry is the s1 local reaction
    List<Step> steps = SCTTestUtil.flattenSequenceStepsAsList(_seq);
    If _if = (If) steps.get(0);
    assertCall(_if.getThenStep(), _s1.getReactions().get(0).getEffect());

    // second entry is the s3 cycle with the transition reaction
    _if = (If) steps.get(1);
    assertCall(_if.getThenStep(), _s3.getReactions().get(0).getEffect());
    assertTrue(_s3.getReactions().get(0).isTransition());

    // third is the s4 cycle with the transition reaction
    _seq = (Sequence) _if.getElseStep();
    cycle = (Sequence) _seq.getSteps().get(0);
    _if = (If) cycle.getSteps().get(0);
    assertCall(_if.getThenStep(), _s4.getReactions().get(0).getEffect());
    assertTrue(_s4.getReactions().get(0).isTransition());
    assertNull(_if.getElseStep());
    assertEquals(1, cycle.getSteps().size());
  }
  /**
   * The cycle sequence of a state that only consists of local reactions includes sequential
   * processing of the local reactions.
   */
  @SuppressWarnings("unused")
  @Test
  public void testStateCycle_WithLocalReactionsOnly() {
    MinimalTSC tsc = new MinimalTSC();

    VariableDefinition v1 = _createVariableDefinition("v1", TYPE_INTEGER, tsc.s_scope);

    // the first local reaction conforms to "e1 / x=42;"
    LocalReaction lr1 = _createLocalReaction(tsc.s1, null);
    _createRegularEventSpec(tsc.e1, (ReactionTrigger) lr1.getTrigger());
    ReactionEffect lr1_eff = _createReactionEffect(lr1);
    AssignmentExpression assign1 =
        _createVariableAssignment(v1, AssignmentOperator.ASSIGN, _createValue(42), lr1_eff);

    // the secont local reaction conforms to "e1 [x==42] / x=0;"
    LocalReaction lr2 = _createLocalReaction(tsc.s1, null);
    _createRegularEventSpec(tsc.e1, (ReactionTrigger) lr2.getTrigger());
    LogicalRelationExpression lr2_equals =
        ExpressionsFactory.eINSTANCE.createLogicalRelationExpression();
    lr2_equals.setOperator(RelationalOperator.EQUALS);
    ElementReferenceExpression lr2_varRef =
        ExpressionsFactory.eINSTANCE.createElementReferenceExpression();
    lr2_varRef.setReference(v1);
    PrimitiveValueExpression lr2_value = _createValue(42);
    lr2_equals.setLeftOperand(lr2_varRef);
    lr2_equals.setRightOperand(lr2_value);
    ((ReactionTrigger) lr2.getTrigger()).setGuard(createGuardExpression(lr2_equals));
    ReactionEffect lr2_eff = _createReactionEffect(lr2);
    AssignmentExpression assign2 =
        _createVariableAssignment(v1, AssignmentOperator.ASSIGN, _createValue(0), lr2_eff);

    // the third local reaction conforms to: "[x==0] / x=1;"
    LocalReaction lr3 = _createLocalReaction(tsc.s1, null);
    LogicalRelationExpression lr3_equals =
        ExpressionsFactory.eINSTANCE.createLogicalRelationExpression();
    lr3_equals.setOperator(RelationalOperator.EQUALS);
    ElementReferenceExpression lr3_varRef =
        ExpressionsFactory.eINSTANCE.createElementReferenceExpression();
    lr3_varRef.setReference(v1);
    PrimitiveValueExpression lr3_value = _createValue(0);
    lr3_equals.setLeftOperand(lr3_varRef);
    lr3_equals.setRightOperand(lr3_value);
    ((ReactionTrigger) lr3.getTrigger()).setGuard(createGuardExpression(lr3_equals));
    ReactionEffect lr3_eff = _createReactionEffect(lr3);
    AssignmentExpression assign3 =
        _createVariableAssignment(v1, AssignmentOperator.ASSIGN, _createValue(1), lr3_eff);

    ExecutionFlow flow = sequencer.transform(tsc.sc);

    // test state with one outgoing transition
    ExecutionState s1 = flow.getStates().get(0);
    assertEquals(tsc.s1.getName(), s1.getSimpleName());

    assertEquals(3, s1.getReactions().size());

    assertNotNull(s1.getReactSequence());

    Step step = s1.getReactSequence().getSteps().get(0);
    Sequence _seq =
        (Sequence) assertedSequence(assertedSequence(step).getSteps().get(0)).getSteps().get(0);
    assertEquals(3, _seq.getSteps().size());

    // check first local reaction
    If _lr1 = (If) _seq.getSteps().get(0);
    assertClass(ElementReferenceExpression.class, _lr1.getCheck().getCondition());
    assertSame(s1.getReactions().get(0).getCheck().getCondition(), _lr1.getCheck().getCondition());
    Call _lr1_eff_call = (Call) _lr1.getThenStep();
    assertSame(s1.getReactions().get(0).getEffect(), _lr1_eff_call.getStep());

    // check second local reaction
    If _lr2 = (If) _seq.getSteps().get(1);
    assertClass(LogicalAndExpression.class, _lr2.getCheck().getCondition());
    assertSame(s1.getReactions().get(1).getCheck().getCondition(), _lr2.getCheck().getCondition());
    Call _lr2_eff_call = (Call) _lr2.getThenStep();
    assertSame(s1.getReactions().get(1).getEffect(), _lr2_eff_call.getStep());

    // check the third local reaction
    If _lr3 = (If) _seq.getSteps().get(2);
    assertClass(LogicalRelationExpression.class, _lr3.getCheck().getCondition());
    assertSame(s1.getReactions().get(2).getCheck().getCondition(), _lr3.getCheck().getCondition());
    Call _lr3_eff_call = (Call) _lr3.getThenStep();
    assertSame(s1.getReactions().get(2).getEffect(), _lr3_eff_call.getStep());
  }