78 lines
2.9 KiB
JavaScript
78 lines
2.9 KiB
JavaScript
import { describe, it, expect } from 'vitest'
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import {
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CONTRIBUTION_PRESETS,
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requiresPayment,
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isValidContributionAmount,
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getGuidanceLabel,
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} from '../../app/config/contributions.js'
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describe('CONTRIBUTION_PRESETS', () => {
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it('exposes the five suggested amounts with guidance labels', () => {
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expect(CONTRIBUTION_PRESETS).toEqual([
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{ amount: 0, label: 'I need support right now' },
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{ amount: 5, label: 'I can contribute' },
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{ amount: 15, label: 'I can sustain the community' },
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{ amount: 30, label: 'I can support others too' },
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{ amount: 50, label: 'I want to sponsor multiple members' },
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])
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})
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})
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describe('requiresPayment', () => {
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it('returns false for 0', () => {
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expect(requiresPayment(0)).toBe(false)
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})
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it('returns true for any positive number', () => {
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expect(requiresPayment(1)).toBe(true)
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expect(requiresPayment(15)).toBe(true)
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})
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it('returns false for null, undefined, NaN', () => {
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expect(requiresPayment(null)).toBe(false)
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expect(requiresPayment(undefined)).toBe(false)
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expect(requiresPayment(NaN)).toBe(false)
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})
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})
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describe('isValidContributionAmount', () => {
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it('accepts non-negative integers', () => {
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expect(isValidContributionAmount(0)).toBe(true)
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expect(isValidContributionAmount(15)).toBe(true)
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expect(isValidContributionAmount(9999)).toBe(true)
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})
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it('rejects negatives', () => {
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expect(isValidContributionAmount(-1)).toBe(false)
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})
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it('rejects non-integers and non-numbers', () => {
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expect(isValidContributionAmount(1.5)).toBe(false)
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expect(isValidContributionAmount('15')).toBe(false)
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expect(isValidContributionAmount(NaN)).toBe(false)
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expect(isValidContributionAmount(null)).toBe(false)
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expect(isValidContributionAmount(undefined)).toBe(false)
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})
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})
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describe('getGuidanceLabel', () => {
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it('returns the exact preset label when amount matches a preset', () => {
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expect(getGuidanceLabel(0)).toBe('I need support right now')
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expect(getGuidanceLabel(5)).toBe('I can contribute')
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expect(getGuidanceLabel(15)).toBe('I can sustain the community')
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expect(getGuidanceLabel(30)).toBe('I can support others too')
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expect(getGuidanceLabel(50)).toBe('I want to sponsor multiple members')
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})
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it('returns the nearest-lower preset label for between-preset values', () => {
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expect(getGuidanceLabel(7)).toBe('I can contribute')
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expect(getGuidanceLabel(14)).toBe('I can contribute')
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expect(getGuidanceLabel(40)).toBe('I can support others too')
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expect(getGuidanceLabel(100)).toBe('I want to sponsor multiple members')
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})
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it('coerces string input', () => {
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expect(getGuidanceLabel('15')).toBe('I can sustain the community')
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})
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it('returns null for invalid input', () => {
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expect(getGuidanceLabel(-1)).toBeNull()
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expect(getGuidanceLabel(NaN)).toBeNull()
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expect(getGuidanceLabel('abc')).toBeNull()
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expect(getGuidanceLabel(null)).toBeNull()
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expect(getGuidanceLabel(undefined)).toBeNull()
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})
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})
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