"""Complete tutorial mapping coverage and engine layout regression."""
import json
from pathlib import Path
import unittest
from test_cjk_layout import layout


class CompleteTutorialTests(unittest.TestCase):
    def test_remaining_pages_fit_without_orphan_punctuation(self):
        mapping = json.loads(Path(__file__).with_name('tutorial_cn.json').read_text(encoding='utf-8'))
        for original, translated in list(mapping.items())[12:]:
            for width in (360, 400, 480):
                with self.subTest(original=original[:40], width=width):
                    lines, _ = layout(translated, width=width, alignment=2)
                    self.assertTrue(lines)
                    self.assertLessEqual(lines[-1][2] + 12, 140)
                    for raw, x, y in lines:
                        text = raw.decode('gb2312')
                        self.assertNotIn(text[0], '，。；：、！？）”')
                        pixels = sum(5 if c == ' ' else 8 if ord(c) < 128 else 12 for c in text)
                        self.assertEqual(x, width // 2 - pixels // 2)

    def test_translations_cover_core_controls_and_constraints(self):
        mapping = json.loads(Path(__file__).with_name('tutorial_cn.json').read_text(encoding='utf-8'))
        text = '\n'.join(mapping.values())
        for term in ['PgUp', 'PgDn', 'Tab', '空格', '50%', 'E 键', 'F12', 'Alt', '0%', 'P 键', 'Esc']:
            self.assertIn(term, text)
        self.assertEqual(sum(k.startswith('\fTo use a charged spell') for k in mapping), 1)


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