21 lines
589 B
Python
21 lines
589 B
Python
from datetime import date
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from app.fitness.charts import linear_regression, week_start
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def test_week_start_monday():
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assert week_start(date(2026, 6, 13)) == date(2026, 6, 8)
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def test_linear_regression_increasing():
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points = [(0.0, 1.0), (1.0, 2.0), (2.0, 3.0)]
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fit = linear_regression(points)
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assert fit is not None
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assert abs(fit["slope"] - 1.0) < 1e-9
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assert abs(fit["intercept"] - 1.0) < 1e-9
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def test_linear_regression_requires_two_points():
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assert linear_regression([(0.0, 5.0)]) is None
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assert linear_regression([]) is None
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