package com.ruoyi.order.service.impl;

import org.junit.jupiter.api.Test;

import java.math.BigDecimal;

import static org.junit.jupiter.api.Assertions.assertEquals;

class ChargingPaymentSupportTest {

    @Test
    void classifiesPartialBalanceAsCombinationPayment() {
        assertEquals(2, ChargingPaymentSupport.resolvePayMethod(
                new BigDecimal("1.00"), new BigDecimal("2.00"), 3));
    }

    @Test
    void classifiesZeroBalanceCombinationSelectionAsThirdPartyPayment() {
        assertEquals(3, ChargingPaymentSupport.resolvePayMethod(
                BigDecimal.ZERO, new BigDecimal("3.00"), 2));
    }

    @Test
    void classifiesFullyCoveredPaymentAsBalancePayment() {
        assertEquals(1, ChargingPaymentSupport.resolvePayMethod(
                new BigDecimal("3.00"), BigDecimal.ZERO, 2));
    }

    @Test
    void preservesSelectedBalanceMethodForAllFreeWhitelistPayment() {
        assertEquals(1, ChargingPaymentSupport.resolvePayMethod(
                BigDecimal.ZERO, BigDecimal.ZERO, 1));
    }
}