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xiaoxia-saas/tests/unit/test_render_audio_utils.py
T
saas-backend-agent 19a6fa3d5a test(#1749): 旧行为测试适配新口径(目标段长为准/逐处转场重叠/voice_ids 移除)+ filter_complex trim 口径统一
- unified_render_service filter_complex Step1 trim 时长改为 effective-freeze(与直通路径同口径,tpad 补冻结)
- test_duration_compensation / render_audio_utils / render_audio_pure / 两处 render_layer_utils:min(duration,actual) 断言改为目标段长为准
- estimate_total_duration 测试:cut 零重叠、非 cut 逐处扣转场(FakeClip 加 transition_effect/duration)
- test_generation_tasks/preview:voice_ids kwarg/字段移除,配音改 voice_library_id
2026-09-07 08:25:49 +08:00

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"""
render_audio 纯工具函数测试.
覆盖 clip_effective_duration / RenderContext 等纯逻辑.
核心混音逻辑依赖 FFmpeg,由集成测试覆盖.
"""
from __future__ import annotations
from pathlib import Path
from types import SimpleNamespace
from unittest.mock import MagicMock
import pytest
from video_processing.render_audio import RenderContext, clip_effective_duration
class TestClipEffectiveDuration:
"""clip_effective_duration 有效时长计算."""
def test_duration_specified_and_actual_longer(self):
"""指定了 duration,且实际时长更长 → 取 duration"""
clip = SimpleNamespace(duration=5.0, actual_duration=10.0)
assert clip_effective_duration(clip) == 5.0
def test_duration_specified_and_actual_shorter(self):
"""#1749:指定了 duration 但实际时长更短 → 仍取目标段长 duration(素材短的部分由末帧冻结 tpad/音频 apad 铺满)"""
clip = SimpleNamespace(duration=10.0, actual_duration=5.0)
assert clip_effective_duration(clip) == 10.0
def test_duration_specified_actual_zero(self):
"""指定了 duration,但实际时长为 0 → 取 duration"""
clip = SimpleNamespace(duration=5.0, actual_duration=0.0)
assert clip_effective_duration(clip) == 5.0
def test_duration_specified_actual_negative(self):
"""指定了 duration,但实际时长为负 → 取 duration"""
clip = SimpleNamespace(duration=5.0, actual_duration=-1.0)
assert clip_effective_duration(clip) == 5.0
def test_no_duration_use_actual(self):
"""未指定 duration0),用实际时长"""
clip = SimpleNamespace(duration=0.0, actual_duration=8.0)
assert clip_effective_duration(clip) == 8.0
def test_no_duration_negative_actual(self):
"""未指定 duration,实际时长也为负 → 返回 0"""
clip = SimpleNamespace(duration=0.0, actual_duration=-5.0)
assert clip_effective_duration(clip) == 0.0
def test_no_duration_zero_actual(self):
"""都为 0 → 返回 0"""
clip = SimpleNamespace(duration=0.0, actual_duration=0.0)
assert clip_effective_duration(clip) == 0.0
def test_negative_duration_use_actual(self):
"""duration 为负(视为未指定),用实际时长"""
clip = SimpleNamespace(duration=-1.0, actual_duration=5.0)
assert clip_effective_duration(clip) == 5.0
def test_both_negative_returns_zero(self):
"""两者都为负 → 返回 0"""
clip = SimpleNamespace(duration=-2.0, actual_duration=-3.0)
assert clip_effective_duration(clip) == 0.0
def test_exact_match(self):
"""duration 与实际时长相等"""
clip = SimpleNamespace(duration=7.5, actual_duration=7.5)
assert clip_effective_duration(clip) == 7.5
def test_very_short_duration(self):
"""很短的时长"""
clip = SimpleNamespace(duration=0.1, actual_duration=0.2)
assert clip_effective_duration(clip) == 0.1
class TestRenderContext:
"""RenderContext 渲染上下文."""
def test_create_with_work_dir_and_plan_id(self, tmp_path):
ctx = RenderContext(work_dir=tmp_path, plan_id="plan_123")
assert ctx.work_dir == tmp_path
assert ctx.plan_id == "plan_123"
assert ctx.noise_reduction_config is None
assert ctx._audio_cache == {}
def test_noise_reduction_config(self, tmp_path):
config = {"enabled": True, "strength": 0.5}
ctx = RenderContext(
work_dir=tmp_path,
plan_id="plan_123",
noise_reduction_config=config,
)
assert ctx.noise_reduction_config == config
assert ctx.noise_reduction_config["enabled"] is True
def test_audio_cache_isolation(self, tmp_path):
"""每个实例有独立的缓存字典."""
ctx1 = RenderContext(work_dir=tmp_path, plan_id="p1")
ctx2 = RenderContext(work_dir=tmp_path, plan_id="p2")
ctx1._audio_cache["key1"] = True
assert "key1" not in ctx2._audio_cache
assert len(ctx2._audio_cache) == 0
def test_work_dir_path_type(self, tmp_path):
ctx = RenderContext(work_dir=tmp_path, plan_id="test")
assert isinstance(ctx.work_dir, Path)