test/w3c/c89/test503.scxml


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<?xml version="1.0" encoding="UTF-8"?>
<!-- test that a targetless transition does not exit and reenter its source state -->
<scxml xmlns="http://www.w3.org/2005/07/scxml" xmlns:conf="http://www.w3.org/2005/scxml-conformance" initial="s1" version="1.0" datamodel="c89">
  <datamodel>
    <data id="Var1" expr="0"/>
    <!-- how often we have exited s2 -->
    <data id="Var2" expr="0"/>
    <!-- how often the targetless transition in s2 has been executed -->
  </datamodel>
  <state id="s1">
    <onentry>
      <raise event="foo"/>
      <raise event="bar"/>
    </onentry>
    <transition target="s2"/>
  </state>
  <state id="s2">
    <onexit>
      <assign location="Var1" expr="Var1 + 1"/>
    </onexit>
    <transition event="foo">
      <assign location="Var2" expr="Var2 + 1"/>
    </transition>
    <!-- make sure the transition on foo was actually taken -->
    <transition event="bar" cond="Var2==1" target="s3"/>
    <transition event="bar" target="fail"/>
  </state>
  <state id="s3">
    <!-- make sure that s2 was exited only once -->
    <transition cond="Var1==1" target="pass"/>
    <transition target="fail"/>
  </state>
  <final id="pass">
    <onentry>
      <log label="Outcome" expr="&amp;pass&amp;"/>
    </onentry>
  </final>
  <final id="fail">
    <onentry>
      <log label="Outcome" expr="&amp;pass&amp;"/>
    </onentry>
  </final>
</scxml>