| 1 | import json |
| 2 | from pathlib import Path |
| 3 | import unittest |
| 4 | |
| 5 | import numpy as np |
| 6 | |
| 7 | from app.models.schema import VideoParams |
| 8 | from app.services import video |
| 9 | |
| 10 | |
| 11 | class TestSubtitleBackgroundSettings(unittest.TestCase): |
| 12 | def test_all_locales_include_subtitle_background_labels(self): |
| 13 | """ |
| 14 | WebUI 新增字幕背景开关和颜色选择器后,所有已有语言都必须包含对应 |
| 15 | 翻译 key,避免某些语言界面直接显示英文内部 key。 |
| 16 | """ |
| 17 | i18n_dir = Path(__file__).parent.parent.parent / "webui" / "i18n" |
| 18 | required_keys = { |
| 19 | "Enable Subtitle Background", |
| 20 | "Subtitle Background Color", |
| 21 | "No Voice", |
| 22 | } |
| 23 | |
| 24 | for locale_file in i18n_dir.glob("*.json"): |
| 25 | with self.subTest(locale=locale_file.name): |
| 26 | data = json.loads(locale_file.read_text(encoding="utf-8")) |
| 27 | translations = data.get("Translation", {}) |
| 28 | missing_keys = required_keys - translations.keys() |
| 29 | |
| 30 | self.assertEqual(missing_keys, set()) |
| 31 | |
| 32 | def test_video_params_accepts_disabled_and_colored_subtitle_background(self): |
| 33 | """ |
| 34 | UI 会根据开关向后端传递 False 或颜色字符串。这里验证 schema 仍然 |
| 35 | 接受这两种值,避免后续依赖或类型调整破坏 WebUI 与合成逻辑的契约。 |
| 36 | """ |
| 37 | base_params = { |
| 38 | "video_subject": "subtitle background smoke", |
| 39 | } |
| 40 | |
| 41 | disabled_params = VideoParams( |
| 42 | **base_params, |
| 43 | text_background_color=False, |
| 44 | ) |
| 45 | colored_params = VideoParams( |
| 46 | **base_params, |
| 47 | text_background_color="#123456", |
| 48 | ) |
| 49 | |
| 50 | self.assertFalse(disabled_params.text_background_color) |
| 51 | self.assertEqual(colored_params.text_background_color, "#123456") |
| 52 | |
| 53 | def test_visible_text_position_centers_actual_mask_bounds(self): |
| 54 | """ |
| 55 | TextClip 的画布会包含字体行高和 baseline 空白,直接居中画布会让 |
| 56 | 字幕在背景里看起来偏下。这里用一个假 mask 模拟“可见文字像素 |
| 57 | 在画布下半部分”的情况,验证 helper 会按真实可见区域重新计算 y。 |
| 58 | """ |
| 59 | |
| 60 | class FakeMask: |
| 61 | def get_frame(self, _): |
| 62 | mask = np.zeros((46, 100), dtype=float) |
| 63 | mask[12:46, 10:90] = 1.0 |
| 64 | return mask |
| 65 | |
| 66 | class FakeTextClip: |
| 67 | w = 100 |
| 68 | h = 46 |
| 69 | mask = FakeMask() |
| 70 | |
| 71 | x, y = video._get_visible_center_position( |
| 72 | FakeTextClip(), container_width=100, container_height=93 |
| 73 | ) |
| 74 | |
| 75 | self.assertEqual(x, 0) |
| 76 | # 可见像素高度为 34px,放在 93px 容器中应上下各约 29px; |
| 77 | # 因为 mask 顶部从 12px 开始,所以 TextClip 本身需要向上移动到 18px。 |
| 78 | self.assertEqual(y, 18) |
| 79 | |
| 80 | def test_wrap_text_keeps_closing_punctuation_with_text(self): |
| 81 | """ |
| 82 | 中文长句按字符换行时,句号等闭合标点不能独占一行,否则字幕背景 |
| 83 | 会被一个单独的小点撑高。这里复现大字号中文长句的边界情况。 |
| 84 | """ |
| 85 | font_path = ( |
| 86 | Path(__file__).parent.parent.parent |
| 87 | / "resource" |
| 88 | / "fonts" |
| 89 | / "MicrosoftYaHeiBold.ttc" |
| 90 | ) |
| 91 | |
| 92 | wrapped_text, _ = video.wrap_text( |
| 93 | "如果你调整字号,中文笔画也不能被黑色背景遮挡。", |
| 94 | max_width=1642, |
| 95 | font=str(font_path), |
| 96 | fontsize=72, |
| 97 | ) |
| 98 | |
| 99 | self.assertNotIn("\n。", wrapped_text) |
| 100 | self.assertIn("挡。", wrapped_text) |
| 101 |