import { describe, expect, it, vi } from 'vitest';
import axios from 'axios';
import { getExchange } from 'src/composables/getExchange';

vi.mock('axios');

describe('getExchange()', () => {
    it('should return the correct exchange rate', async () => {
        axios.get.mockResolvedValue({
            data: { value: 1.2 },
        });

        const amount = 100;
        const currencyFk = 1;
        const dated = '2023-01-01';
        const result = await getExchange(amount, currencyFk, dated);

        expect(result).toBe('83.33');
    });

    it('should return the correct exchange rate with custom decimal places', async () => {
        axios.get.mockResolvedValue({
            data: { value: 1.2 },
        });

        const amount = 100;
        const currencyFk = 1;
        const dated = '2023-01-01';
        const decimalPlaces = 3;
        const result = await getExchange(amount, currencyFk, dated, decimalPlaces);

        expect(result).toBe('83.333');
    });

    it('should return null if the API call fails', async () => {
        axios.get.mockRejectedValue(new Error('Network error'));

        const amount = 100;
        const currencyFk = 1;
        const dated = '2023-01-01';
        const result = await getExchange(amount, currencyFk, dated);

        expect(result).toBeNull();
    });
});