25 lines
662 B
Python
25 lines
662 B
Python
import pandas as pd
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import pytest
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from app.screener.nodes.base import percentile_rank
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def test_percentile_rank_basic():
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s = pd.Series([10, 20, 30, 40, 50])
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out = percentile_rank(s)
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assert (out >= 0).all() and (out <= 100).all()
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assert out.iloc[0] < out.iloc[-1] # smallest gets lowest rank
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def test_percentile_rank_all_equal_returns_50():
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s = pd.Series([42, 42, 42, 42])
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out = percentile_rank(s)
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assert (out == 50.0).all()
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def test_percentile_rank_handles_nan():
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s = pd.Series([1.0, float("nan"), 3.0, 5.0])
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out = percentile_rank(s)
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assert pd.isna(out.iloc[1])
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assert (out.dropna() >= 0).all()
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