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Use Decimal in floats checker #503

Merged
merged 2 commits into from
Oct 5, 2019
Merged

Use Decimal in floats checker #503

merged 2 commits into from
Oct 5, 2019

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kiritofeng
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Closes #456.

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codecov-io commented Sep 30, 2019

Codecov Report

Merging #503 into master will increase coverage by 0.11%.
The diff coverage is 100%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master     #503      +/-   ##
==========================================
+ Coverage    72.8%   72.91%   +0.11%     
==========================================
  Files         126      126              
  Lines        3938     3947       +9     
==========================================
+ Hits         2867     2878      +11     
+ Misses       1071     1069       -2
Impacted Files Coverage Δ
dmoj/tests/test_checker.py 96.29% <100%> (+0.29%) ⬆️
dmoj/checkers/floats.py 86.04% <100%> (+9.73%) ⬆️
dmoj/cptbox/tracer.py 82.67% <0%> (-0.5%) ⬇️

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Add unit tests for this.

dmoj/checkers/floats.py Outdated Show resolved Hide resolved
dmoj/checkers/floats.py Outdated Show resolved Hide resolved
@kiritofeng kiritofeng force-pushed the decimal_checker branch 3 times, most recently from cedc046 to a7cb316 Compare October 1, 2019 13:12
@@ -27,7 +28,12 @@ def verify_default(process_float, judge_float, epsilon):
abs(1.0 - process_float / judge_float) <= epsilon)


def check(process_output, judge_output, precision=6, error_mode='default', **kwargs):
def check(process_output, judge_output, precision=6, high_precision=False, error_mode='default', **kwargs):
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What about precision and other stuff you can control in the decimal context?

@Xyene Xyene merged commit 55f00b2 into master Oct 5, 2019
@Xyene Xyene deleted the decimal_checker branch October 5, 2019 03:09
quantum5 added a commit that referenced this pull request Oct 5, 2019
Reverts #503.

This is completely broken. The checker will reject anything because `Decimal`
constructor does not accept `bytes`. Once that bug is fixed, the inability to
control `Decimal`'s precision makes the test case fail, since the numbers do
compare equal at default precision.

In other words, the only test case worked by accident.
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checker improvement: make floats checker use arbitrary-precision Decimal
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