7a483ad3ee
Per-question score is now a float in [0.0, 1.0] snapped to a 21-level 0.05 grid, replacing the previous 0-1000 integer scale. Easier to read on a leaderboard, ties become acceptable rather than vanishingly rare, and small clock-skew differences no longer split rankings. DB schema: score is REAL now (SQLite type affinity is loose enough that existing rows still read fine, but new inserts go in as floats). Frontend: added fmtScore() helpers in admin.js and quiz.js to render two decimal places consistently (0.85, 1.20, 5.00) so float-arithmetic sums never display as 0.8500000000000001. Tests: linear_decay/flat/exponential_decay assertions updated; added a snap-to-grid invariant test.
38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
from app.scoring import SCORE_FNS
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def test_linear_decay_values():
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fn = SCORE_FNS["linear_decay"]
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assert fn(True, 0, 60_000) == 1.0
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assert fn(True, 30_000, 60_000) == 0.75
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assert fn(True, 60_000, 60_000) == 0.5
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# Past the deadline the score floors at 0.5 (still correct, fully decayed).
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assert fn(True, 90_000, 60_000) == 0.5
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assert fn(False, 0, 60_000) == 0.0
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def test_linear_decay_snaps_to_grid():
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"""Every score is on the 0.05 grid (21 distinct values)."""
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fn = SCORE_FNS["linear_decay"]
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for elapsed in range(0, 60_001, 137): # arbitrary irrational-ish step
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s = fn(True, elapsed, 60_000)
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# multiplied by 20, must be an integer
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assert abs(s * 20 - round(s * 20)) < 1e-9, (elapsed, s)
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def test_flat_values():
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fn = SCORE_FNS["flat"]
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assert fn(True, 0, 60_000) == 1.0
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assert fn(True, 60_000, 60_000) == 1.0
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assert fn(True, 90_000, 60_000) == 1.0
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assert fn(False, 0, 60_000) == 0.0
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def test_exponential_decay_values():
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fn = SCORE_FNS["exponential_decay"]
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assert fn(True, 0, 60_000) == 1.0
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# At deadline: 0.5 + 0.5 * e^-2 ≈ 0.5677 → snaps to 0.55
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assert fn(True, 60_000, 60_000) == 0.55
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assert fn(True, 90_000, 60_000) == fn(True, 60_000, 60_000)
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assert fn(False, 0, 60_000) == 0.0
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