import type { Currency } from '../../shared/enums.js';
import type { ExchangeProvider } from '../../modules/exchange-rates/providers/exchange.provider.js';
/**
 * Configuration for a mocked exchange rate.
 */
export interface ExchangeRateMock {
    fromCurrency: Currency;
    toCurrency: Currency;
    rate: number;
}
/**
 * Creates a mock function that overrides ExchangeProvider.getExchangeRates
 * to return a fixed rate for specific currency pairs.
 *
 * @example
 * ```ts
 * // Fix USD → ILS at 3.5
 * const mockFn = createMockExchangeRates([
 *   { fromCurrency: Currency.Usd, toCurrency: Currency.Ils, rate: 3.5 }
 * ]);
 * provider.getExchangeRates = mockFn;
 * ```
 */
export declare function createMockExchangeRates(mocks: ExchangeRateMock[]): ExchangeProvider['getExchangeRates'];
/**
 * Convenience function to create a single exchange rate mock.
 *
 * @example
 * ```ts
 * const mockFn = mockExchangeRate(Currency.Usd, Currency.Ils, 3.5);
 * provider.getExchangeRates = mockFn;
 * ```
 */
export declare function mockExchangeRate(fromCurrency: Currency, toCurrency: Currency, rate: number): ExchangeProvider['getExchangeRates'];