import { toSavedCandle } from './tbank-candle.mapper';

describe('T-Bank candle mapping', () => {
  it('keeps signed nano precision and requires explicit completeness', () => {
    const input = { time: { seconds: '1767225600' }, close: { units: '0', nano: -1 } };
    expect(toSavedCandle(input)).toEqual({
      time: '2026-01-01T00:00:00.000Z', close: '-0.000000001', isComplete: false,
    });
    expect(toSavedCandle({ ...input, isComplete: true }).isComplete).toBe(true);
    expect(input).toEqual({ time: { seconds: '1767225600' }, close: { units: '0', nano: -1 } });
  });
  it.each([
    { close: { units: '1' } },
    { time: { seconds: 'invalid' }, close: { units: '1' } },
    { time: { seconds: '1767225600' } },
  ])('rejects missing or malformed source fields: %j', (input) => {
    expect(() => toSavedCandle(input)).toThrow('Invalid candle response');
  });
});