test/parser.test.js

import test from 'node:test';
import assert from 'node:assert/strict';
import { parseBetInput } from '../src/parser.js';

test('parses labeled multiline input in any order', () => {
  const parsed = parseBetInput({
    stake: '$25',
    odds: '-110',
    prop: 'Jayson Tatum over 29.5 points',
    book: 'FanDuel',
    sport: 'NBA',
  });

  assert.equal(parsed.ok, true);
  assert.equal(parsed.bet.book, 'FanDuel');
  assert.equal(parsed.bet.oddsInput, '-110');
  assert.equal(parsed.bet.stake, 25);
});

test('parses decimal or american odds from structured fields', () => {
  const parsed = parseBetInput({
    stake: '20',
    odds: '+135',
    prop: 'Celtics ML',
    book: 'DraftKings',
    sport: 'NBA',
  });

  assert.equal(parsed.ok, true);
  assert.equal(parsed.bet.book, 'DraftKings');
  assert.equal(parsed.bet.oddsInput, '+135');
  assert.equal(parsed.bet.stake, 20);
  assert.match(parsed.bet.prop, /Celtics ML/i);
});

test('accepts larger decimal odds values', () => {
  const parsed = parseBetInput({
    stake: '10',
    odds: '11.0',
    prop: 'JJ WetherGoat 1+ HR',
    book: 'BetMGM',
    sport: 'MLB',
  });

  assert.equal(parsed.ok, true);
  assert.equal(parsed.bet.oddsInput, '11.0');
  assert.equal(parsed.bet.normalizedDecimalOdds, 11);
});

test('accepts large american odds values', () => {
  const parsed = parseBetInput({
    stake: '$2.50',
    odds: '+119484',
    prop: '4 leg home run parlay',
    book: 'FanDuel',
    sport: 'MLB',
  });

  assert.equal(parsed.ok, true);
  assert.equal(parsed.bet.oddsInput, '+119484');
  assert.equal(parsed.bet.stake, 2.5);
  assert.equal(parsed.bet.normalizedDecimalOdds, 1195.84);
});

test('reports missing fields for incomplete input', () => {
  const parsed = parseBetInput({
    stake: '',
    odds: '',
    prop: 'Knicks ML',
    book: 'FanDuel',
    sport: 'NBA',
  });

  assert.equal(parsed.ok, false);
  assert.deepEqual(parsed.missingFields.sort(), ['odds', 'stake']);
});