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imSp4rky
dd9dafef91
Validates the 206 range end, bounds the DASH collapse, and preserves cookie domains and pool size in spawned children.
75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
"""Offline unit tests for DASH.collapsible_single_url, the guard that decides when a
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byte-range track (SegmentBase / ranged SegmentList) can be downloaded as one whole
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resource instead of per-segment files + merge."""
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from __future__ import annotations
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from typing import Optional
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from unshackle.core.manifests import DASH
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URL = "https://cdn/media.mp4"
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def collapsible(segments, init_len: Optional[int], is_subtitle: bool = False) -> bool:
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return DASH.collapsible_single_url(is_subtitle, segments, init_len)
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def test_segmentbase_single_range_eligible():
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# init occupies [0, 863); one media segment covers the rest of the same URL
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assert collapsible([(URL, "863-999999")], init_len=863) is True
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def test_ranged_segmentlist_contiguous_eligible():
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segments = [(URL, "863-1999"), (URL, "2000-3999"), (URL, "4000-5999")]
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assert collapsible(segments, init_len=863) is True
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def test_subtitle_never_eligible():
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assert collapsible([(URL, "863-999999")], init_len=863, is_subtitle=True) is False
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def test_missing_init_len_ineligible():
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assert collapsible([(URL, "863-999999")], init_len=None) is False
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def test_missing_range_ineligible():
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assert collapsible([(URL, None)], init_len=863) is False
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assert collapsible([(URL, "863-1999"), (URL, None)], init_len=863) is False
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def test_mixed_urls_ineligible():
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segments = [(URL, "863-1999"), ("https://cdn/other.mp4", "2000-3999")]
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assert collapsible(segments, init_len=863) is False
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def test_first_segment_gap_after_init_ineligible():
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# first media byte does not immediately follow the init prefix
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assert collapsible([(URL, "900-1999")], init_len=863) is False
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def test_gap_between_segments_ineligible():
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# the merge path would skip 2000-2999; collapsing the parent would include it
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segments = [(URL, "863-1999"), (URL, "3000-3999")]
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assert collapsible(segments, init_len=863) is False
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def test_overlapping_ranges_ineligible():
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segments = [(URL, "863-2500"), (URL, "2000-3999")]
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assert collapsible(segments, init_len=863) is False
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def test_non_monotonic_order_ineligible():
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segments = [(URL, "4000-5999"), (URL, "863-1999")]
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assert collapsible(segments, init_len=863) is False
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def test_malformed_range_ineligible():
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assert collapsible([(URL, "863")], init_len=863) is False
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assert collapsible([(URL, "abc-def")], init_len=863) is False
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assert collapsible([(URL, "1999-863")], init_len=863) is False
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def test_empty_segments_ineligible():
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assert collapsible([], init_len=863) is False
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