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import os
import sys
import unittest

from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from init_paths import init_test_paths
init_test_paths(False)

from PySide6.QtCore import QItemSelection
from PySide6.QtGui import QStandardItemModel, QStandardItem
from PySide6.QtWidgets import QApplication


class Bug324(unittest.TestCase):
    def testOperators(self):
        model = QStandardItemModel()
        for i in range(100):
            model.appendRow(QStandardItem(f"Item: {i}"))

        first = model.index(0, 0)
        second = model.index(10, 0)
        third = model.index(20, 0)
        fourth = model.index(30, 0)

        sel = QItemSelection(first, second)
        sel2 = QItemSelection()
        sel2.select(third, fourth)

        sel3 = sel + sel2  # check operator +
        self.assertEqual(len(sel3), 2)
        sel4 = sel
        sel4 += sel2  # check operator +=
        self.assertEqual(len(sel4), 2)
        self.assertEqual(sel4, sel3)


if __name__ == "__main__":
    unittest.main()
