"""Flight tutorial text fits the existing dialog using actual engine layout."""
import json
from pathlib import Path
import unittest
from test_cjk_layout import layout


class FlightTests(unittest.TestCase):
    def test_flight_instructions_fit_and_share_dialog_center(self):
        mapping = json.loads(Path(__file__).with_name('tutorial_cn.json').read_text(encoding='utf-8'))
        bodies = [v for k, v in mapping.items() if k.startswith('\fYou can fly')]
        self.assertEqual(len(bodies), 2)
        self.assertEqual(bodies[0], bodies[1])
        for body in bodies:
            for width in (360, 400, 480):
                lines, _ = layout(body, width=width, alignment=0)
                self.assertEqual(len(lines), 2)
                for raw, x, y in lines:
                    text = raw.decode('gb2312')
                    self.assertEqual(x, (width - len(text) * 12) // 2)
                    self.assertNotIn(text[0], '，。；：、')
                self.assertEqual(lines[1][2] - lines[0][2], 17)


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