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def startCreatorTryingClang():
    try:
        # start Qt Creator with enabled ClangCodeModel plugin (without modifying settings)
        startApplication("qtcreator -load ClangCodeModel" + SettingsPath)
        errorMsg = "{type='QMessageBox' unnamed='1' visible='1' windowTitle='Qt Creator'}"
        errorOK = "{text='OK' type='QPushButton' unnamed='1' visible='1' window=%s}" % errorMsg
        if waitFor("object.exists(errorOK)", 5000):
            clickButton(errorOK) # Error message
            clickButton(errorOK) # Help message
            raise Exception("ClangCodeModel not found.")
        return True
    except:
        # ClangCodeModel plugin has not been built - start without it
        test.warning("ClangCodeModel plugin not available - performing test without.")
        startApplication("qtcreator" + SettingsPath)
        return False

def __openCodeModelOptions__():
    invokeMenuItem("Tools", "Options...")
    waitForObjectItem(":Options_QListView", "C++")
    clickItem(":Options_QListView", "C++", 14, 15, 0, Qt.LeftButton)
    clickOnTab(":Options.qt_tabwidget_tabbar_QTabBar", "Code Model")

def selectClangCodeModel(clangLoaded, enable):
    codeModelName = "built-in"
    if clangLoaded and enable:
        codeModelName = "Clang"
    test.log("Testing code model: %s" % codeModelName)
    __openCodeModelOptions__()
    if clangLoaded:
        ensureChecked(":clangSettingsGroupBox_QGroupBox", enable)
    test.verify(verifyChecked("{name='ignorePCHCheckBox' type='QCheckBox' visible='1'}"),
                "Verifying whether 'Ignore pre-compiled headers' is checked by default.")
    clickButton(waitForObject(":Options.OK_QPushButton"))