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3c95bc6174
Dense catalog rank plus share of statewide votes on the baseline card and list column (header label 2022), with URL sort/dir and Impeccable polish.
70 lines
2.4 KiB
TypeScript
70 lines
2.4 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { federalBaselineMunicipalitySlugs } from '@/lib/bahiaElectionAggregates'
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import {
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compareMunicipalityVotesForSort,
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computeVoteRankByYear,
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DEFAULT_VOTE_RANK_YEAR,
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formatMunicipalityVoteRank,
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formatMunicipalityVoteShare,
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getMunicipalityVoteRank,
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} from '@/lib/municipalityVoteRank'
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describe('municipalityVoteRank', () => {
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it('ranks every catalog slug for the default year', () => {
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const bySlug = computeVoteRankByYear(DEFAULT_VOTE_RANK_YEAR)
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const slugs = federalBaselineMunicipalitySlugs()
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expect(bySlug.size).toBe(slugs.length)
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expect(bySlug.size).toBe(435)
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let shareSum = 0
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for (const slug of slugs) {
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const entry = bySlug.get(slug)
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expect(entry).toBeDefined()
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expect(entry!.totalUnits).toBe(435)
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expect(entry!.rank).toBeGreaterThanOrEqual(1)
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expect(entry!.rank).toBeLessThanOrEqual(435)
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expect(entry!.votes).toBeGreaterThanOrEqual(0)
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expect(entry!.share).toBeGreaterThanOrEqual(0)
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shareSum += entry!.share
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}
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expect(shareSum).toBeCloseTo(1, 10)
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})
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it('uses dense ranks when votes tie', () => {
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const bySlug = computeVoteRankByYear(DEFAULT_VOTE_RANK_YEAR)
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const byVotes = new Map<number, number[]>()
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for (const entry of bySlug.values()) {
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const ranks = byVotes.get(entry.votes) ?? []
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ranks.push(entry.rank)
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byVotes.set(entry.votes, ranks)
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}
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for (const ranks of byVotes.values()) {
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expect(new Set(ranks).size).toBe(1)
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}
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const sortedUniqueVotes = [...byVotes.keys()].sort((a, b) => b - a)
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let expectedDense = 1
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for (const votes of sortedUniqueVotes) {
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const rank = byVotes.get(votes)![0]!
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expect(rank).toBe(expectedDense)
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expectedDense += 1
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}
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})
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it('returns null for unknown slugs', () => {
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expect(getMunicipalityVoteRank('nao-existe')).toBeNull()
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})
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it('formats rank as colocação only (catalog size lives in the header hint)', () => {
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expect(formatMunicipalityVoteRank(12)).toBe('12º')
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expect(formatMunicipalityVoteShare(0.031)).toMatch(/3[,.]1%/)
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})
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it('sorts zero votes last in either direction', () => {
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expect(compareMunicipalityVotesForSort(0, 100, 'desc')).toBeGreaterThan(0)
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expect(compareMunicipalityVotesForSort(0, 100, 'asc')).toBeGreaterThan(0)
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expect(compareMunicipalityVotesForSort(200, 100, 'desc')).toBeLessThan(0)
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expect(compareMunicipalityVotesForSort(50, 100, 'asc')).toBeLessThan(0)
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})
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})
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