ANTOOZA-BACKEND/Tests/Application.Tests/KrxEsgSecurityParserTests.cs

using Infrastructure.StockData;

namespace Application.Tests;

[TestClass]
public sealed class KrxEsgSecurityParserTests
{
    [TestMethod]
    public void ParseDaily_MapsFields_FromSampleJson()
    {
        // KRX OpenAPI(esg/esg_etp_info) 실검증 샘플 — ISU_CD 없음(종목명만), FLUC_RT 는 소수 % 그대로(".06"/"-.43" 형태 포함), 천단위 콤마 방어
        const string json = """
        {"OutBlock_1":[
        {"BAS_DD":"20250102","ISU_ABBRV":"HANARO 탄소효율그린뉴딜","TDD_CLSPRC":"7,880","CMPPREVDD_PRC":"5","FLUC_RT":".06","LIST_SHRS":"900,000","ACC_TRDVOL":"2,723","ACC_TRDVAL":"21,348,240"},
        {"BAS_DD":"20250102","ISU_ABBRV":"KODEX 200ESG","TDD_CLSPRC":"12860","CMPPREVDD_PRC":"-55","FLUC_RT":"-.43","LIST_SHRS":"2700000","ACC_TRDVOL":"5276","ACC_TRDVAL":"67842290"}
        ]}
        """;

        var rows = KrxEsgSecurityParser.ParseDaily(json);

        Assert.AreEqual(2, rows.Count);

        var a = rows[0];
        Assert.AreEqual("HANARO 탄소효율그린뉴딜", a.Name);
        Assert.AreEqual(new DateOnly(2025, 1, 2), a.TradeDate);
        Assert.AreEqual(7880m, a.Close, "종가 콤마 제거");
        Assert.AreEqual(5m, a.ChangeAmount);
        Assert.AreEqual(0.06m, a.ChangeRate, "FLUC_RT '.06' → 0.06 소수 % 그대로 (Bp 아님)");
        Assert.AreEqual(900000L, a.ListedShares, "상장좌수 콤마 제거");
        Assert.AreEqual(2723L, a.Volume);
        Assert.AreEqual(21348240L, a.TradeValue);

        var b = rows[1];
        Assert.AreEqual("KODEX 200ESG", b.Name);
        Assert.AreEqual(12860m, b.Close);
        Assert.AreEqual(-55m, b.ChangeAmount);
        Assert.AreEqual(-0.43m, b.ChangeRate, "FLUC_RT '-.43' → -0.43");
    }

    [TestMethod]
    public void ParseDaily_ZeroChangeAndVolume_AreZero()
    {
        // 무거래일 종목 — CMPPREVDD_PRC/FLUC_RT/ACC_TRDVOL/ACC_TRDVAL 모두 "0"
        const string json = """
        {"OutBlock_1":[
        {"BAS_DD":"20250102","ISU_ABBRV":"FOCUS ESG리더스","TDD_CLSPRC":"10385","CMPPREVDD_PRC":"0","FLUC_RT":"0","LIST_SHRS":"450000","ACC_TRDVOL":"0","ACC_TRDVAL":"0"}
        ]}
        """;

        var rows = KrxEsgSecurityParser.ParseDaily(json);

        Assert.AreEqual(1, rows.Count);
        var r = rows[0];
        Assert.AreEqual(10385m, r.Close);
        Assert.AreEqual(0m, r.ChangeAmount);
        Assert.AreEqual(0m, r.ChangeRate);
        Assert.AreEqual(0L, r.Volume);
        Assert.AreEqual(0L, r.TradeValue);
    }

    [TestMethod]
    public void ParseDaily_EmptyOrMissingBlock_ReturnsEmpty()
    {
        // basDd 미반영 — OutBlock_1 빈 배열
        Assert.AreEqual(0, KrxEsgSecurityParser.ParseDaily("""{"OutBlock_1":[]}""").Count);

        // 인증 실패 등 OutBlock_1 노드 자체가 없는 응답도 안전하게 0건
        Assert.AreEqual(0, KrxEsgSecurityParser.ParseDaily("""{"respMsg":"Unauthorized API Call","respCode":"401"}""").Count);
    }
}