"""
This example demonstrates how to test interacting with a ListEditor.

The GUI being tested is written in the demo under the same name (minus the
preceding 'test') in the outer directory.
"""

import os
import runpy
import unittest

from traitsui.testing.api import Index, KeyClick, KeySequence, UITester

#: Filename of the demo script
FILENAME = "ListEditor_demo.py"

#: Path of the demo script
DEMO_PATH = os.path.join(os.path.dirname(__file__), "..", FILENAME)


class TestListEditorDemo(unittest.TestCase):

    def test_list_editor_demo(self):
        demo = runpy.run_path(DEMO_PATH)["demo"]

        tester = UITester()
        with tester.create_ui(demo) as ui:
            custom_list = tester.find_by_id(ui, "custom")
            item1 = custom_list.locate(Index(1))
            for _ in range(6):
                item1.perform(KeyClick("Backspace"))
            item1.perform(KeySequence("Othello"))
            item1.perform(KeyClick("Enter"))
            self.assertEqual(
                demo.play_list,
                ["The Merchant of Venice", "Othello", "MacBeth"]
            )


# Run the test(s)
unittest.TextTestRunner().run(
    unittest.TestLoader().loadTestsFromTestCase(TestListEditorDemo)
)
