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  1. Qt
  2. QTBUG-47405

SignalSpy.count returns wrong value

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      If SignalSpy signalName property is defined before target property we can see that SignalSpy count property returns doubled value.

      See the only difference is order of target and signalName:

          SignalSpy {
        id: spySignalNameFirst
        signalName: "antialiasingChanged"
        target: rect
    }

    SignalSpy {
        id: spyTargetFirst
        target: rect
        signalName: "antialiasingChanged"
    }

      value of rect is changed in initTestCase only once:

          function initTestCase() {
      rect.antialiasing = true;
      console.log("spySignalNameFirst.count: " + spySignalNameFirst.count)
      console.log("spyTargetFirst.count: " + spyTargetFirst.count)
    }

      And output shows that value is different depending of the property order:

      QDEBUG : tst_testCase::myTest::initTestCase() qml: spySignalNameFirst.count: 2
QDEBUG : tst_testCase::myTest::initTestCase() qml: spyTargetFirst.count: 1

      Test project for above test atached.

      If signal from rect is attached more than once it cause spySignalNameFirst.count value to be always double of the spyTrgetFirst.count value.

        1. 0001-WIP-SignalSpy-qtest_update-Do-nothing-if-parameters-.patch
          1 kB
        2. qtbug47405_55_diag.diff
          2 kB
        3. qtbug47405_log.txt
          3 kB
        4. qtbug47405.zip
          1 kB
        5. QTBUG-47405.zip
          1 kB
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            ulherman Ulf Hermann
            qtcomsupport Qt Support
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              Created:
              Updated:
              Resolved:

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