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namespace FundLab.Api.Tests
open System
open System.Threading
open Xunit
open FundLab.Api
module NavSeriesProbeSupport =
let payload (code: string) (observations: (string * string * string option) list) =
let body =
observations
|> List.map (fun (date, nav, accumulated) ->
let accumulatedText =
match accumulated with
| Some value -> sprintf "\"%s\"" value
| None -> "null"
sprintf
"{\"nav_date\":\"%s\",\"published_at\":null,\"nav\":\"%s\",\"accumulated_nav\":%s,\"daily_return\":null}"
date
nav
accumulatedText)
|> String.concat ","
sprintf
"{\"schema_version\":\"fund-lab.akshare.v1\",\"operation\":\"nav\",\"source\":\"akshare\",\"source_revision\":\"akshare-test/eastmoney\",\"collected_at\":\"2026-09-21T08:00:00Z\",\"instrument\":{\"code\":\"%s\"},\"observations\":[%s]}"
code
body
[<Collection("postgres")>]
type NavSeriesProbeTests(fixture: PostgresFixture) =
let repository () = FundRepository(fixture.ConnectionString)
let stubDateProbe =
{ new INavDateProbe with
member _.RecentNavDates(_, _, _) = Ok [] }
let appWithSeries (probe: INavSeriesProbe) =
App.createApplicationWithProbes
(repository ())
{ NavDates = stubDateProbe
NavSeries = probe
BondQuotes = NavDateProbeSupport.stubBondQuoteProbe
StockQuotes = NavDateProbeSupport.stubStockQuoteProbe
StockDaily = NavDateProbeSupport.stubStockDailyProbe }
[<Fact>]
member _.``series parses points descending, keeps accumulated nav, drops zero navs and truncates``() =
let json =
NavSeriesProbeSupport.payload
"000001"
[
"2026-09-16", "1.1205", Some "2.5000"
"2026-09-21", "1.1902", None
"2026-09-16", "1.1205", Some "2.5000"
"2026-09-18", "1.1500", Some "2.5300"
"2026-09-17", "0.0000", None
"2026-09-15", "1.1000", Some "2.4800"
]
let probe = AkshareNavSeriesProbe(NavDateProbeSupport.collectorReturning (fun () -> Ok json)) :> INavSeriesProbe
match probe.RecentNavSeries("000001", 4, CancellationToken.None) with
| Ok points ->
Assert.Equal<DateOnly list>(
[ DateOnly(2026, 9, 21); DateOnly(2026, 9, 18); DateOnly(2026, 9, 16); DateOnly(2026, 9, 15) ],
points |> List.map (fun point -> point.NavDate)
)
Assert.Equal(4, List.length points)
Assert.Equal<decimal option>(Some 2.53m, (points |> List.find (fun point -> point.NavDate = DateOnly(2026, 9, 18))).AccumulatedNav)
Assert.Equal<decimal option>(None, (points |> List.head).AccumulatedNav)
| Error failure -> failwithf "expected NAV series, got %A" failure
[<Fact>]
member _.``series memoises successful lookups per code and day``() =
let mutable calls = 0
let collector =
NavDateProbeSupport.collectorReturning (fun () ->
calls <- calls + 1
Ok(NavSeriesProbeSupport.payload "000001" [ "2026-09-21", "1.1902", None ]))
let probe = AkshareNavSeriesProbe(collector) :> INavSeriesProbe
let first = probe.RecentNavSeries("000001", 30, CancellationToken.None)
let second = probe.RecentNavSeries("000001", 30, CancellationToken.None)
Assert.Equal(1, calls)
Assert.Equal(first |> Result.map (List.map (fun point -> point.NavDate)), second |> Result.map (List.map (fun point -> point.NavDate)))
[<Fact>]
member _.``series returns an empty list when no usable nav remains``() =
let json = NavSeriesProbeSupport.payload "000001" [ "2026-09-21", "0.0000", None; "2026-09-18", "0.0000", None ]
let probe = AkshareNavSeriesProbe(NavDateProbeSupport.collectorReturning (fun () -> Ok json)) :> INavSeriesProbe
match probe.RecentNavSeries("000001", 30, CancellationToken.None) with
| Ok points -> Assert.Empty points
| Error failure -> failwithf "expected empty NAV series, got %A" failure
[<Fact>]
member _.``series rejects a malformed fund code without touching the collector``() =
let probe =
AkshareNavSeriesProbe(NavDateProbeSupport.collectorReturning (fun () -> failwith "collector should not be called"))
:> INavSeriesProbe
match probe.RecentNavSeries("abc", 30, CancellationToken.None) with
| Error (InvalidMarketDataRequest message) -> Assert.Contains("six digits", message)
| other -> failwithf "expected InvalidMarketDataRequest, got %A" other
[<Fact>]
member _.``series maps collector failures to an unavailable reason``() =
let probe =
AkshareNavSeriesProbe(NavDateProbeSupport.collectorReturning (fun () -> Error "collector exited with code 2"))
:> INavSeriesProbe
match probe.RecentNavSeries("000001", 30, CancellationToken.None) with
| Error (MarketDataCollectorUnavailable message) -> Assert.Contains("code 2", message)
| other -> failwithf "expected MarketDataCollectorUnavailable, got %A" other
[<Fact>]
member _.``series maps malformed payloads to an invalid payload reason``() =
let probe = AkshareNavSeriesProbe(NavDateProbeSupport.collectorReturning (fun () -> Ok "{not-json")) :> INavSeriesProbe
match probe.RecentNavSeries("000001", 30, CancellationToken.None) with
| Error (InvalidMarketDataPayload _) -> ()
| other -> failwithf "expected InvalidMarketDataPayload, got %A" other
[<Fact>]
member _.``market nav-series endpoint returns the probe points``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(code, limit, _) =
Assert.Equal("000001", code)
Assert.Equal(30, limit)
Ok
[
{ NavDate = DateOnly(2026, 9, 21); Nav = 1.1902m; AccumulatedNav = None }
{ NavDate = DateOnly(2026, 9, 18); Nav = 1.15m; AccumulatedNav = Some 2.53m }
] }
let status, body =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=000001"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(200, status)
Assert.Contains("\"code\":\"000001\"", body)
Assert.Contains("\"navDate\":\"2026-09-21\"", body)
Assert.Contains("1.1902", body)
Assert.Contains("\"navDate\":\"2026-09-18\"", body)
Assert.Contains("2.53", body)
[<Fact>]
member _.``market nav-series endpoint passes the requested limit``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, limit, _) =
Assert.Equal(3, limit)
Ok [ { NavDate = DateOnly(2026, 9, 21); Nav = 1.1902m; AccumulatedNav = None } ] }
let status, _ =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=000001&limit=3"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(200, status)
[<Fact>]
member _.``market nav-series endpoint returns an empty list for no usable points``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, _, _) = Ok [] }
let status, body =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=000001"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(200, status)
Assert.Contains("\"points\":[]", body)
[<Fact>]
member _.``market nav-series endpoint answers 503 when the probe fails``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, _, _) = Error(MarketDataCollectorUnavailable "collector exited with code 2") }
let status, body =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=000001"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(503, status)
Assert.Contains("MARKET_DATA_UNAVAILABLE", body)
Assert.Contains("code 2", body)
[<Fact>]
member _.``market nav-series endpoint rejects a malformed code with 400``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, _, _) =
Error(InvalidMarketDataRequest "fund code must contain exactly six digits") }
let status, body =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=abc"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(400, status)
Assert.Contains("INVALID_MARKET_DATA_REQUEST", body)
[<Fact>]
member _.``market nav-series endpoint rejects a malformed limit with 400``() =
let probe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, _, _) = failwith "probe should not be called for an invalid limit" }
let status, body =
PersistenceTestHelpers.invoke
(appWithSeries probe)
"GET"
"/api/market/nav-series?code=000001&limit=0"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(400, status)
Assert.Contains("limit must be an integer between 1 and 250", body)
|
