import unittest

from PyQt5 import QtGui
from PyQt5 import QtCore
from PyQt5 import QtTest

from qtchecker.qtChecker import QtChecker, CmdCheck, WrapAttrCheck, ExtCmdCheck

# import my dialog module
from lavuelib import liveViewer


# QApplication object should be one for all tess
app = QtGui.QApplication([])


class GuiTest(unittest.TestCase):

    def __init__(self, methodName):
        unittest.TestCase.__init__(self, methodName)

    def test_run(self):

        # my tested MainWindow dialog
        dialog = liveViewer.MainWindow()
        dialog.show()

        # create QtChecker object
        qtck = QtChecker(app, dialog)

        # define a sequence of action of the dialog
        qtck.setChecks([
            # read return value of execute isConnected command
            CmdCheck(
                # a python path to a method executed in the first action
                "_MainWindow__lavue._LiveViewer__sourcewg.isConnected"
            ),
            # click pushButton with the left-mouse-click
            WrapAttrCheck(
                # a python path to an pushButton object
                "_MainWindow__lavue._LiveViewer__sourcewg._SourceTabWidget__sourcetabs[],0._ui.pushButton",
                # Wrapper command to be executed on the action object
                QtTest.QTest.mouseClick,
                # additional parameters of the wrapper command
                [QtCore.Qt.LeftButton]
            ),
            # read a result of external "getLAvueState" command
            ExtCmdCheck(
                # parent object of the external command
                self,
                # external command name
                "getLavueState"
            ),
        ])

        # execute the check actions and close the dialog
        status = qtck.executeChecksAndClose()
        self.assertEqual(status, 0)

        # compare results returned by each action
        qtck.compareResults(self,
            [
                # a result of isConnected() command
                True,
                # a result of the mouseClick on the pushButton
                None,
                # a result of getLavueState() command
                '{"connected": false}'
            ]
        )

   def getLavueState(self):
       """ an external command """

       import tango
       return tango.DeviceProxy("po/lavuecontroller/1").LavueState