知微
fa45d8aa5f
- health_checklist.json: 192.168.1.122→node122
- ocr_client.py: docstring IP→node122
- docs/market-data-requirements.md: IP→node122
- 所有API调用通过ProxyHandler({})绕过系统代理
Privoxy对node122:18003返回500，直连正常
117 lines
3.7 KiB
Python
117 lines
3.7 KiB
Python
import pytest
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from nltk.metrics.segmentation import windowdiff
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def test_basic_functionality():
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# Identical Segmentations
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assert windowdiff("0001000", "0001000", 3) == 0.0
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assert windowdiff("111", "111", 2) == 0.0
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# Completely Different Segmentations
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assert windowdiff("000", "111", 2) == 1.0
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assert windowdiff("010101", "101010", 3) == 1.0
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def test_boundary_marker_variations():
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# Different Boundary Markers
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assert windowdiff("aaaaba", "aaaaba", 3, boundary="b") == 0.0
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assert windowdiff("1110111", "1110111", 2, boundary="0") == 0.0
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def test_weighted_vs_unweighted():
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# Weighted Calculation
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assert windowdiff("0001000", "0000100", 3, weighted=True) == 0.4
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assert windowdiff("1110111", "1111011", 2, weighted=True) == 0.3333333333333333
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# Unweighted Calculation
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assert windowdiff("0001000", "0000100", 3, weighted=False) == 0.4
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assert windowdiff("1110111", "1111011", 2, weighted=False) == 0.3333333333333333
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def test_edge_cases():
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# Minimum Length Segmentations
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assert windowdiff("0", "0", 1) == 0.0
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assert windowdiff("1", "0", 1) == 1.0
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# Window Width Equal to Length
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assert windowdiff("000", "001", 3) == 1.0
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assert windowdiff("111", "110", 3) == 1.0
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def test_error_handling():
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# Unequal Lengths
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with pytest.raises(ValueError, match="Segmentations have unequal length"):
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windowdiff("000", "0000", 2)
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with pytest.raises(ValueError, match="Segmentations have unequal length"):
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windowdiff("1111", "111", 3)
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# Window Width Greater than Length
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with pytest.raises(
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ValueError,
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match="Window width k should be smaller or equal than segmentation lengths",
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):
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windowdiff("00", "00", 3)
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with pytest.raises(
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ValueError,
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match="Window width k should be smaller or equal than segmentation lengths",
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):
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windowdiff("111", "111", 4)
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def test_large_scale_cases():
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# Large Segmentations
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assert windowdiff("0" * 1000 + "1", "0" * 1000 + "1", 500) == 0.0
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assert windowdiff("01" * 500, "10" * 500, 100) == 0.0
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def test_mixed_content_segmentations():
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# Mixed Content
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assert windowdiff("0101010101", "1010101010", 4) == 0.0
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assert windowdiff("1100110011", "0011001100", 3) == 1.0
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def test_non_string_segmentations():
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# Lists as Segmentations
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assert windowdiff([0, 0, 1, 0, 0], [0, 0, 0, 1, 0], 3) == 0.0
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assert windowdiff([1, 1, 1, 0, 1], [1, 1, 0, 1, 1], 2) == 0.0
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def test_boundary_marker_as_non_string():
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# Integer Boundary Markers
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assert windowdiff([0, 0, 1, 0], [0, 1, 0, 0], 2, boundary=1) == 0.6666666666666666
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assert windowdiff([1, 1, 0, 1], [1, 0, 1, 1], 3, boundary=0) == 0.0
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def test_complex_patterns():
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# Complex Patterns
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assert windowdiff("001001001", "001001010", 3) == 0.14285714285714285
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assert windowdiff("111000111", "111111111", 4) == 1.0
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def test_pevzner_hearst_examples():
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"""Reference values from the windowdiff docstring (Pevzner & Hearst 2002)."""
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s1 = "000100000010"
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s2 = "000010000100"
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s3 = "100000010000"
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assert windowdiff(s1, s1, 3) == 0.0
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assert abs(windowdiff(s1, s2, 3) - 0.3) < 1e-6
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assert abs(windowdiff(s2, s3, 3) - 0.8) < 1e-6
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def test_symmetry():
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"""windowdiff(a, b, k) == windowdiff(b, a, k) for all inputs."""
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pairs = [
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("000100000010", "000010000100", 3),
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("100000010000", "000010000100", 3),
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("010101", "101010", 3),
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("0001000", "0000100", 3),
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("1110111", "1111011", 2),
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("001001001", "001001010", 3),
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]
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for seg1, seg2, k in pairs:
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assert windowdiff(seg1, seg2, k) == windowdiff(seg2, seg1, k)
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assert windowdiff(seg1, seg2, k, weighted=True) == windowdiff(
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seg2, seg1, k, weighted=True
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)
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