test(wave199): sticker_engine_pure 单测补全 +141测

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补全贴纸引擎纯逻辑模块单元测试，覆盖23个纯函数：
- 安全类型转换: safe_float/safe_int/safe_bool
- 尺寸估算: estimate_sticker_size/estimate_text_size
- 时间计算: calculate_fade_out_start/calculate_end_time/has_time_range
- 滤镜构建: build_scale_filter/build_opacity_filter/build_image_fade_filters
- drawtext相关: escape_drawtext_text/build_drawtext_alpha_expr/build_stroke_params/build_shadow_params
- 贴纸管理: sort_stickers_by_z_index/filter_enabled_stickers/count_sticker_types
- overlay相关: build_overlay_position/build_pre_filter_label
- 验证函数: validate_image_sticker/validate_text_sticker
- enable表达式: build_enable_expr

141个测试全部通过。

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This commit is contained in:

xiaoxia

2026-07-29 22:29:46 +08:00

parent cb85b33ee9

commit d92ff7aa36

1 changed files with 536 additions and 485 deletions

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tests/unit/test_sticker_engine_pure.py

+536 -485

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