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pyRCV2/tests/test_csm.py

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# pyRCV2: Preferential vote counting
# Copyright © 2020–2021 Lee Yingtong Li (RunasSudo)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from pytest import approx
from pytest_steps import test_steps
import pyRCV2.blt
import pyRCV2.numbers
from pyRCV2.method.base_stv import WIGSTVCounter
from pyRCV2.model import CandidateState, CountCompleted
def count_until_exclude(counter):
while True:
result = counter.step()
if isinstance(result, CountCompleted):
return result
if result.comment.startswith('Exclusion of '):
return result
@test_steps(*['Round {}'.format(i) for i in range(1, 31)])
def test_csm15():
"""Compare count of CSM15.blt with model result at https://www.eveonline.com/article/qbtyyo/meet-the-new-council"""
pyRCV2.numbers.set_numclass(pyRCV2.numbers.Native)
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with open('tests/data/CSM15.blt', 'r') as f:
election = pyRCV2.blt.readBLT(f.read())
assert len(election.candidates) == 40
cands = {c.name: c for c in election.candidates}
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counter = WIGSTVCounter(election, {
'exclusion': 'wright',
'round_quota': 0,
})
# Round 1
result = counter.reset()
assert result.candidates[cands['Merkelchen']].votes.impl == 5325
assert result.candidates[cands['Gobbins']].votes.impl == 3709
assert result.candidates[cands['Vily']].votes.impl == 2789
assert result.candidates[cands['Maria Taylor']].votes.impl == 2556
assert result.candidates[cands['Brisc Rubal']].votes.impl == 1794
assert result.candidates[cands['Ikarus Cesaille']].votes.impl == 1471
assert result.candidates[cands['Phantomite']].votes.impl == 1462
assert result.candidates[cands['Juvenius Drakonius']].votes.impl == 1375
assert result.candidates[cands['Torvald Uruz']].votes.impl == 1297
assert result.candidates[cands['Mike Azariah']].votes.impl == 1242
assert result.candidates[cands['BlazingBunny']].votes.impl == 1042
assert result.candidates[cands['ExookiZ']].votes.impl == 961
assert result.candidates[cands['Loroseco Kross']].votes.impl == 938
assert result.candidates[cands['Kenneth Feld']].votes.impl == 874
assert result.candidates[cands['Jurius Doctor']].votes.impl == 747
assert result.candidates[cands['Stitch Kaneland']].votes.impl == 698
assert result.candidates[cands['DutchGunner']].votes.impl == 690
assert result.candidates[cands['Insidious Sainthood']].votes.impl == 583
assert result.candidates[cands['Alexis Finch']].votes.impl == 526
assert result.candidates[cands['Steadyo']].votes.impl == 499
assert result.candidates[cands['Innominate']].votes.impl == 493
assert result.candidates[cands['Meredith en Thielles']].votes.impl == 477
assert result.candidates[cands['Ironwulf']].votes.impl == 472
assert result.candidates[cands['PJHustle']].votes.impl == 443
assert result.candidates[cands['Darius Caliente']].votes.impl == 442
assert result.candidates[cands['January Valentine']].votes.impl == 414
assert result.candidates[cands['The Oz']].votes.impl == 407
assert result.candidates[cands['Pandora Singularity']].votes.impl == 355
assert result.candidates[cands['UAxDEATH']].votes.impl == 323
assert result.candidates[cands['Komi Valentine']].votes.impl == 277
assert result.candidates[cands['Murray Rothbardo']].votes.impl == 184
assert result.candidates[cands['Xenuria']].votes.impl == 179
assert result.candidates[cands['Prospektor Schipplock']].votes.impl == 177
assert result.candidates[cands['Styxx']].votes.impl == 172
assert result.candidates[cands['boernl']].votes.impl == 171
assert result.candidates[cands['Dhuras']].votes.impl == 162
assert result.candidates[cands['Rheaha Preynar']].votes.impl == 125
assert result.candidates[cands['Kalen Tsero']].votes.impl == 113
assert result.candidates[cands['Storm Delay']].votes.impl == 96
assert result.candidates[cands['Leehams DaWildabeast']].votes.impl == 60
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Leehams DaWildabeast']].votes.impl == approx(63.208412)
assert result.candidates[cands['Leehams DaWildabeast']].state == CandidateState.EXCLUDED
yield 'Round 1'
# Round 2
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Storm Delay']].votes.impl == approx(112.229279)
assert result.candidates[cands['Storm Delay']].state == CandidateState.EXCLUDED
yield 'Round 2'
# Round 3
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Kalen Tsero']].votes.impl == approx(115.888433)
assert result.candidates[cands['Kalen Tsero']].state == CandidateState.EXCLUDED
yield 'Round 3'
# Round 4
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Rheaha Preynar']].votes.impl == approx(133.122193)
assert result.candidates[cands['Rheaha Preynar']].state == CandidateState.EXCLUDED
yield 'Round 4'
# Round 5
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Dhuras']].votes.impl == approx(170.123665)
assert result.candidates[cands['Dhuras']].state == CandidateState.EXCLUDED
yield 'Round 5'
# Round 6
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['boernl']].votes.impl == approx(181.377165)
assert result.candidates[cands['boernl']].state == CandidateState.EXCLUDED
yield 'Round 6'
# Round 7
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Styxx']].votes.impl == approx(184.463008)
assert result.candidates[cands['Styxx']].state == CandidateState.EXCLUDED
yield 'Round 7'
# Round 8
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Murray Rothbardo']].votes.impl == approx(189.651433)
assert result.candidates[cands['Murray Rothbardo']].state == CandidateState.EXCLUDED
yield 'Round 8'
# Round 9
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Xenuria']].votes.impl == approx(198.266912)
assert result.candidates[cands['Xenuria']].state == CandidateState.EXCLUDED
yield 'Round 9'
# Round 10
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Prospektor Schipplock']].votes.impl == approx(213.386936)
assert result.candidates[cands['Prospektor Schipplock']].state == CandidateState.EXCLUDED
yield 'Round 10'
# Round 11
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Komi Valentine']].votes.impl == approx(336.404306)
assert result.candidates[cands['Komi Valentine']].state == CandidateState.EXCLUDED
yield 'Round 11'
# Round 12
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['UAxDEATH']].votes.impl == approx(357.732024)
assert result.candidates[cands['UAxDEATH']].state == CandidateState.EXCLUDED
yield 'Round 12'
# Round 13
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Pandora Singularity']].votes.impl == approx(413.808353)
assert result.candidates[cands['Pandora Singularity']].state == CandidateState.EXCLUDED
yield 'Round 13'
# Round 14
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['PJHustle']].votes.impl == approx(478.737771)
assert result.candidates[cands['PJHustle']].state == CandidateState.EXCLUDED
yield 'Round 14'
# Round 15
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Ironwulf']].votes.impl == approx(528.845712)
assert result.candidates[cands['Ironwulf']].state == CandidateState.EXCLUDED
yield 'Round 15'
# Round 16
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['January Valentine']].votes.impl == approx(557.154707)
assert result.candidates[cands['January Valentine']].state == CandidateState.EXCLUDED
yield 'Round 16'
# Round 17
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Darius Caliente']].votes.impl == approx(620.307162)
assert result.candidates[cands['Darius Caliente']].state == CandidateState.EXCLUDED
yield 'Round 17'
# Round 18
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Alexis Finch']].votes.impl == approx(630.517365)
assert result.candidates[cands['Alexis Finch']].state == CandidateState.EXCLUDED
yield 'Round 18'
# Round 19
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['The Oz']].votes.impl == approx(673.241462)
assert result.candidates[cands['The Oz']].state == CandidateState.EXCLUDED
yield 'Round 19'
# Round 20
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Steadyo']].votes.impl == approx(693.622387)
assert result.candidates[cands['Steadyo']].state == CandidateState.EXCLUDED
yield 'Round 20'
# Round 21
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Insidious Sainthood']].votes.impl == approx(711.112702)
assert result.candidates[cands['Insidious Sainthood']].state == CandidateState.EXCLUDED
yield 'Round 21'
# Round 22
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Meredith en Thielles']].votes.impl == approx(773.804223)
assert result.candidates[cands['Meredith en Thielles']].state == CandidateState.EXCLUDED
yield 'Round 22'
# Round 23
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Stitch Kaneland']].votes.impl == approx(944.597498)
assert result.candidates[cands['Stitch Kaneland']].state == CandidateState.EXCLUDED
yield 'Round 23'
# Round 24
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['DutchGunner']].votes.impl == approx(1056.847624)
assert result.candidates[cands['DutchGunner']].state == CandidateState.EXCLUDED
yield 'Round 24'
# Round 25
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Jurius Doctor']].votes.impl == approx(1254.134642)
assert result.candidates[cands['Jurius Doctor']].state == CandidateState.EXCLUDED
yield 'Round 25'
# Round 26
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['BlazingBunny']].votes.impl == approx(1448.527563)
assert result.candidates[cands['BlazingBunny']].state == CandidateState.EXCLUDED
yield 'Round 26'
# Round 27
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['ExookiZ']].votes.impl == approx(1527.088745)
assert result.candidates[cands['ExookiZ']].state == CandidateState.EXCLUDED
yield 'Round 27'
# Round 28
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Juvenius Drakonius']].votes.impl == approx(1614.455637)
assert result.candidates[cands['Juvenius Drakonius']].state == CandidateState.EXCLUDED
yield 'Round 28'
# Round 29
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Ikarus Cesaille']].votes.impl == approx(1938.970656)
assert result.candidates[cands['Ikarus Cesaille']].state == CandidateState.EXCLUDED
yield 'Round 29'
# Round 30
result = count_until_exclude(counter)
assert counter.step_results[-2].candidates[cands['Loroseco Kross']].votes.impl == approx(2306.134123)
assert result.candidates[cands['Loroseco Kross']].state == CandidateState.EXCLUDED
result = counter.step()
assert result.comment == 'Bulk election'
assert result.candidates[cands['Vily']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Phantomite']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Kenneth Feld']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Merkelchen']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Maria Taylor']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Brisc Rubal']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Gobbins']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Torvald Uruz']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Mike Azariah']].state == CandidateState.PROVISIONALLY_ELECTED
assert result.candidates[cands['Innominate']].state == CandidateState.PROVISIONALLY_ELECTED
result = counter.step()
assert isinstance(result, CountCompleted)
yield 'Round 30'