Nuxt 4

.github/workflows/update-indexes.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Checking for changes
         id: check_changes
         run: |
-          if git diff --exit-code assets/indicadores.json; then
+          if git diff --exit-code app/assets/indicadores.json; then
             echo "has_changes=false" >> $GITHUB_ENV
           else
             echo "has_changes=true" >> $GITHUB_ENV
@@ -37,7 +37,7 @@ jobs:
         run: |
           git config --global user.name 'github-actions[bot]'
           git config --global user.email 'github-actions[bot]@users.noreply.github.com'
-          git add assets/indicadores.json
+          git add app/assets/indicadores.json
           git commit -m "Updated indicadores.json on $(date -u +"%Y-%m-%dT%H:%M:%SZ")"
           git push
         env:

nuxt.config.ts

@@ -59,6 +59,10 @@ export default defineNuxtConfig({
     transpile: ['vuetify'],
   },
 
+  future: {
+    compatibilityVersion: 4,
+  },
+
   modules: [
     '@pinia/nuxt',
     'nuxt-schema-org',

package.json

@@ -15,16 +15,17 @@
     "@nuxt/test-utils": "^3.19.2",
     "@vitejs/plugin-vue": "^6.0.1",
     "jsdom": "^26.1.0",
-    "nuxt": "^3.19.2",
+    "nuxt": "^4.1.2",
     "vite-plugin-vuetify": "^2.1.2",
     "vitest": "^3.2.4",
     "vuetify": "^3.10.4"
   },
   "dependencies": {
     "@mdi/font": "^7.4.47",
-    "@pinia/nuxt": "^0.10.1",
+    "@pinia/nuxt": "^0.11.2",
     "axios": "^1.12.2",
-    "nuxt-schema-org": "^5.0.9"
+    "nuxt-schema-org": "^5.0.9",
+    "pinia": "^3.0.3"
   },
   "pnpm": {
     "onlyBuiltDependencies": [

test/app/src/cdb.spec.ts

@@ -0,0 +1,85 @@
+import { describe, it, expect } from 'vitest'
+import { getCDBResult } from '../../../app/src/cdb'
+import { getIndexIR, getIOFAmount, getIOFPercentage } from '../../../app/src/finance'
+
+// Helper to compute expected values independently (mirrors financial math)
+function expectedCDB(amount: number, di: number, yearlyIndex: number, days: number) {
+  const yearlyRate = yearlyIndex / 100 // convert to decimal
+  const dailyFactor = Math.pow((yearlyRate * di) / 100 + 1, 1 / 365)
+  const rawInterest = amount * Math.pow(dailyFactor, days) - amount
+  const interestAmount = parseFloat(rawInterest.toFixed(2))
+  const taxPercentage = getIndexIR(days)
+  const iofAmount = getIOFAmount(days, interestAmount)
+  const taxAmount = (interestAmount - iofAmount) * (taxPercentage / 100)
+  return { interestAmount, taxAmount, taxPercentage, iofAmount }
+}
+
+describe('getCDBResult - tax percentage tiers', () => {
+  const tierCases = [
+    { days: 30, expected: 22.5 },
+    { days: 181, expected: 20 },
+    { days: 400, expected: 17.5 },
+    { days: 900, expected: 15 }
+  ]
+
+  for (const { days, expected } of tierCases) {
+    it(`returns taxPercentage ${expected} for ${days} days`, () => {
+      const result = getCDBResult(1000, 100, 13.15, days)
+      expect(result.taxPercentage).toBe(expected)
+    })
+  }
+})
+
+describe('getCDBResult - IOF impact (early redemption)', () => {
+  it('applies IOF correctly for redemption within 10 days', () => {
+    const amount = 1000
+    const di = 110 // 110% of CDI
+    const yearlyIndex = 13.15
+    const days = 10
+
+    const result = getCDBResult(amount, di, yearlyIndex, days)
+    const expected = expectedCDB(amount, di, yearlyIndex, days)
+
+    expect(getIOFPercentage(days)).toBeGreaterThan(0) // sanity check IOF applies
+    expect(result.interestAmount).toBe(expected.interestAmount)
+    expect(result.taxPercentage).toBe(expected.taxPercentage)
+    expect(result.iofAmount).toBeCloseTo(expected.iofAmount, 6)
+    expect(result.taxAmount).toBeCloseTo(expected.taxAmount, 6)
+  })
+})
+
+describe('getCDBResult - no IOF after 35 days', () => {
+  it('does not apply IOF and calculates taxes correctly', () => {
+    const amount = 1000
+    const di = 100
+    const yearlyIndex = 13.15
+    const days = 200
+
+    const result = getCDBResult(amount, di, yearlyIndex, days)
+    const expected = expectedCDB(amount, di, yearlyIndex, days)
+
+    expect(getIOFPercentage(days)).toBe(0)
+    expect(result.iofAmount).toBe(0)
+    expect(result.interestAmount).toBe(expected.interestAmount)
+    expect(result.taxPercentage).toBe(expected.taxPercentage)
+    expect(result.taxAmount).toBeCloseTo(expected.taxAmount, 6)
+  })
+})
+
+describe('getCDBResult - long term lowest tax bracket', () => {
+  it('applies 15% tax after more than 720 days', () => {
+    const amount = 1000
+    const di = 95
+    const yearlyIndex = 13.15
+    const days = 800
+
+    const result = getCDBResult(amount, di, yearlyIndex, days)
+    const expected = expectedCDB(amount, di, yearlyIndex, days)
+
+    expect(result.taxPercentage).toBe(15)
+    expect(result.iofAmount).toBe(0)
+    expect(result.interestAmount).toBe(expected.interestAmount)
+    expect(result.taxAmount).toBeCloseTo(expected.taxAmount, 6)
+  })
+})
+

test/src/finance.spec.ts → test/app/src/finance.spec.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import { compoundInterest, getIndexIR, getIOFAmount, getIOFPercentage } from '../../src/finance'
+import { compoundInterest, getIndexIR, getIOFAmount, getIOFPercentage } from '../../../app/src/finance'
 
 describe('getIndexIR function', () => {
     const testCases = [