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namespace FundLab.Api.Tests
open System
open Xunit
open FundLab.Api
open FundLab.Domain
module StockSipSupport =
let quoteWith (code: string) (price: decimal option) (suspended: bool option) : StockQuote =
{
Code = code
Name = Some "贵州茅台"
Price = price
Currency = "CNY"
Market = Some "sh"
Adjust = Some "none"
Suspended = suspended
}
let stubQuoteProbe (quote: StockQuote) =
{ new IStockQuoteProbe with
member _.GetQuote(_, _) = Ok quote }
let probes (quote: StockQuote) =
{ NavDates = NavDateProbeSupport.stubNavDateProbe
NavSeries = NavDateProbeSupport.stubNavSeriesProbe
BondQuotes = NavDateProbeSupport.stubBondQuoteProbe
StockQuotes = stubQuoteProbe quote
StockDaily = NavDateProbeSupport.stubStockDailyProbe }
[<Collection("postgres")>]
type StockSipTests(fixture: PostgresFixture) =
let sharedRepository =
lazy
let value = FundRepository(fixture.ConnectionString)
value.EnsureSchema()
value
let repository () = sharedRepository.Value
let createFund (initialCash: decimal) =
let command =
{
Name = "股票定投测试 FOF"
InitialCash = initialCash
InitialUnitNav = 1.00000000m
IsSynthetic = true
}
let key = fixture.Key(sprintf "stock-sip-fund-%s" (Guid.NewGuid().ToString("N")))
match repository().CreateFund(key, command) with
| FundWriteResult.Created fund -> fund.Id
| other -> failwithf "unexpected fund creation result: %A" other
let createStockPlan fundId code amount frequency anchor =
let key = fixture.Key(sprintf "stock-sip-plan-%s" (Guid.NewGuid().ToString("N")))
match
repository().CreateSipPlan(
key,
fundId,
{ InstrumentCode = code; Amount = amount; Frequency = frequency },
anchor,
"stock"
)
with
| SipPlanWriteResult.SipPlanCreated plan -> plan.Id
| other -> failwithf "unexpected sip plan result: %A" other
let app (quote: StockQuote) =
App.createApplicationWithProbes (repository ()) (StockSipSupport.probes quote)
let advance (quote: StockQuote) fundId body =
PersistenceTestHelpers.invoke
(app quote)
"POST"
(sprintf "/api/funds/%O/sip/advance" fundId)
[ "Authorization", "Bearer test-token" ]
body
let availableCash fundId =
match repository().GetFund fundId with
| Some fund -> fund.AvailableCash
| None -> failwith "fund not found"
let stockQuantity fundId code =
repository().GetStockPositions fundId
|> List.filter (fun position -> position.InstrumentCode = code)
|> List.sumBy (fun position -> position.Quantity)
[<Fact>]
member _.``a stock sip period buys whole lots and debits cash through the shared pipeline``() =
let fundId = createFund 10000.00m
let quote = StockSipSupport.quoteWith "600519" (Some 10.00m) (Some false)
let _ = createStockPlan fundId "600519" 2000.00m SipFrequency.Weekly (DateOnly(2026, 9, 7))
let status, body = advance quote fundId """{"endDate":"2026-09-14"}"""
Assert.Equal(200, status)
Assert.Contains("\"assetClass\":\"stock\"", body)
Assert.Contains("\"status\":\"succeeded\"", body)
Assert.Equal(200m, stockQuantity fundId "600519")
Assert.Equal(8000.00m, availableCash fundId)
let buyEvents =
repository().GetStockCashflows fundId
|> List.filter (fun record -> record.EventType = "buy" && record.InstrumentCode = "600519")
Assert.Single(buyEvents) |> ignore
Assert.Equal(2000.00m, buyEvents.Head.Amount)
[<Fact>]
member _.``a suspended stock sip period is rejected without any trade``() =
let fundId = createFund 10000.00m
let quote = StockSipSupport.quoteWith "600519" (Some 10.00m) (Some true)
let _ = createStockPlan fundId "600519" 2000.00m SipFrequency.Weekly (DateOnly(2026, 9, 7))
let status, body = advance quote fundId """{"endDate":"2026-09-14"}"""
Assert.Equal(200, status)
Assert.Contains("\"status\":\"suspended\"", body)
Assert.Equal(0m, stockQuantity fundId "600519")
Assert.Equal(10000.00m, availableCash fundId)
[<Fact>]
member _.``a stock sip period with insufficient cash is rejected and never drives cash negative``() =
let fundId = createFund 500.00m
let quote = StockSipSupport.quoteWith "600519" (Some 10.00m) (Some false)
let _ = createStockPlan fundId "600519" 2000.00m SipFrequency.Weekly (DateOnly(2026, 9, 7))
let status, body = advance quote fundId """{"endDate":"2026-09-14"}"""
Assert.Equal(200, status)
Assert.Contains("\"status\":\"insufficient_cash\"", body)
Assert.Equal(0m, stockQuantity fundId "600519")
Assert.Equal(500.00m, availableCash fundId)
[<Fact>]
member _.``re-running the same stock sip window does not double the position``() =
let fundId = createFund 10000.00m
let quote = StockSipSupport.quoteWith "600519" (Some 10.00m) (Some false)
let _ = createStockPlan fundId "600519" 2000.00m SipFrequency.Weekly (DateOnly(2026, 9, 7))
let firstStatus, _ = advance quote fundId """{"endDate":"2026-09-14"}"""
Assert.Equal(200, firstStatus)
let secondStatus, secondBody = advance quote fundId """{"endDate":"2026-09-14"}"""
Assert.Equal(200, secondStatus)
Assert.Contains("\"status\":\"succeeded\"", secondBody)
Assert.Equal(200m, stockQuantity fundId "600519")
Assert.Equal(8000.00m, availableCash fundId)
|
