Feature/add annualized performance (#364)
* Add annualized performance * Update changelogpull/365/head
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import { PortfolioService } from './portfolio.service';
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describe('PortfolioService', () => {
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let portfolioService: PortfolioService;
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beforeAll(async () => {
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portfolioService = new PortfolioService(
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null,
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null,
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null,
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null,
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null,
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null,
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null,
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null,
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null
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);
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});
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it('Get annualized performance', async () => {
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expect(
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portfolioService.getAnnualizedPerformancePercent({
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daysInMarket: NaN, // differenceInDays of date-fns returns NaN for the same day
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netPerformancePercent: 0
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})
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).toEqual(0);
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expect(
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portfolioService.getAnnualizedPerformancePercent({
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daysInMarket: 0,
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netPerformancePercent: 0
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})
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).toEqual(0);
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/**
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* Source: https://www.readyratios.com/reference/analysis/annualized_rate.html
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*/
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expect(
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portfolioService.getAnnualizedPerformancePercent({
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daysInMarket: 65, // < 1 year
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netPerformancePercent: 0.1025
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})
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).toBeCloseTo(0.729705);
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expect(
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portfolioService.getAnnualizedPerformancePercent({
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daysInMarket: 365, // 1 year
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netPerformancePercent: 0.05
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})
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).toBeCloseTo(0.05);
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/**
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* Source: https://www.investopedia.com/terms/a/annualized-total-return.asp#annualized-return-formula-and-calculation
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*/
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expect(
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portfolioService.getAnnualizedPerformancePercent({
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daysInMarket: 575, // > 1 year
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netPerformancePercent: 0.2374
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})
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).toBeCloseTo(0.145);
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});
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});
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