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|
namespace FundLab.Api.Tests
open System
open System.Diagnostics
open System.IO
open System.Text.Json
open System.Threading
open Xunit
open FundLab.Api
module NavDateProbeSupport =
let navPayloadJson (code: string) (observations: (string * string) list) =
let body =
observations
|> List.map (fun (date, nav) ->
sprintf
"{\"nav_date\":\"%s\",\"published_at\":null,\"nav\":\"%s\",\"accumulated_nav\":null,\"daily_return\":null}"
date
nav)
|> 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
let collectorReturning (fetch: unit -> Result<string, string>) =
{ new IMarketDataCollector with
member _.Search(_, _) = Ok ""
member _.FetchNav(_, _) = fetch () }
let realAksharePython () =
let configured = Environment.GetEnvironmentVariable("FUND_LAB_AKSHARE_PYTHON")
if String.IsNullOrWhiteSpace configured then
None
elif File.Exists configured then
Some configured
else
let path = Environment.GetEnvironmentVariable("PATH") |> Option.ofObj |> Option.defaultValue ""
path.Split(Path.PathSeparator, StringSplitOptions.RemoveEmptyEntries)
|> Array.tryPick (fun directory ->
let candidate = Path.Combine(directory, configured)
if File.Exists candidate then Some candidate else None)
let repositoryRoot () =
let mutable directory = DirectoryInfo(AppContext.BaseDirectory)
while not (isNull directory)
&& not (File.Exists(Path.Combine(directory.FullName, "scripts", "probe_akshare_nav_dates.py"))) do
directory <- directory.Parent
if isNull directory then
failwith "could not locate scripts/probe_akshare_nav_dates.py from the test output directory"
else
directory.FullName
/// xUnit has no first-class runtime skip in 2.x, so this fact sets Skip during
/// discovery when the host has no reachable AKShare interpreter configured.
/// That keeps the live probe detectable ("skipped, not faked") instead of red.
type RealAkshareFactAttribute() =
inherit FactAttribute()
do
if (NavDateProbeSupport.realAksharePython ()).IsNone then
base.Skip <-
"set FUND_LAB_AKSHARE_PYTHON to a python interpreter with akshare installed to run the live probe"
[<Collection("postgres")>]
type NavDateProbeTests(fixture: PostgresFixture) =
let repository () = FundRepository(fixture.ConnectionString)
let stubSeriesProbe =
{ new INavSeriesProbe with
member _.RecentNavSeries(_, _, _) = Ok [] }
let appWithProbe (probe: INavDateProbe) =
App.createApplicationWithProbes (repository ()) { NavDates = probe; NavSeries = stubSeriesProbe }
[<Fact>]
member _.``probe parses, dedupes, sorts descending and truncates``() =
let payload =
NavDateProbeSupport.navPayloadJson
"000001"
[
"2026-09-16", "1.1205"
"2026-09-21", "1.1902"
"2026-09-16", "1.1205"
"2026-09-18", "1.1500"
"2026-09-17", "1.1180"
"2026-09-15", "1.1000"
"2026-09-11", "1.0900"
]
let probe = AkshareNavDateProbe(NavDateProbeSupport.collectorReturning (fun () -> Ok payload)) :> INavDateProbe
match probe.RecentNavDates("000001", 5, CancellationToken.None) with
| Ok dates ->
Assert.Equal<DateOnly list>(
[
DateOnly(2026, 9, 21)
DateOnly(2026, 9, 18)
DateOnly(2026, 9, 17)
DateOnly(2026, 9, 16)
DateOnly(2026, 9, 15)
],
dates
)
| Error failure -> failwithf "expected NAV dates, got %A" failure
[<Fact>]
member _.``probe memoises successful lookups per code``() =
let mutable calls = 0
let collector =
NavDateProbeSupport.collectorReturning (fun () ->
calls <- calls + 1
Ok(NavDateProbeSupport.navPayloadJson "000001" [ "2026-09-21", "1.1902" ]))
let probe = AkshareNavDateProbe(collector) :> INavDateProbe
let first = probe.RecentNavDates("000001", 5, CancellationToken.None)
let second = probe.RecentNavDates("000001", 5, CancellationToken.None)
Assert.Equal(Ok [ DateOnly(2026, 9, 21) ], first)
Assert.Equal(Ok [ DateOnly(2026, 9, 21) ], second)
Assert.Equal(1, calls)
[<Fact>]
member _.``probe rejects a malformed fund code without touching the collector``() =
let collector =
NavDateProbeSupport.collectorReturning (fun () -> failwith "collector should not be called")
let probe = AkshareNavDateProbe(collector) :> INavDateProbe
match probe.RecentNavDates("abc", 5, CancellationToken.None) with
| Error (InvalidMarketDataRequest message) -> Assert.Contains("six digits", message)
| other -> failwithf "expected InvalidMarketDataRequest, got %A" other
[<Fact>]
member _.``probe maps collector failures to an unavailable reason``() =
let collector =
NavDateProbeSupport.collectorReturning (fun () -> Error "AKShare is unreachable: connection timed out")
let probe = AkshareNavDateProbe(collector) :> INavDateProbe
match probe.RecentNavDates("000001", 5, CancellationToken.None) with
| Error (MarketDataCollectorUnavailable message) -> Assert.Contains("connection timed out", message)
| other -> failwithf "expected MarketDataCollectorUnavailable, got %A" other
[<Fact>]
member _.``probe maps malformed payloads to an invalid payload reason``() =
let probe =
AkshareNavDateProbe(NavDateProbeSupport.collectorReturning (fun () -> Ok "{not-json")) :> INavDateProbe
match probe.RecentNavDates("000001", 5, CancellationToken.None) with
| Error (InvalidMarketDataPayload _) -> ()
| other -> failwithf "expected InvalidMarketDataPayload, got %A" other
[<Fact>]
member _.``market nav-dates endpoint returns the probe dates``() =
let probe =
{ new INavDateProbe with
member _.RecentNavDates(code, limit, _) =
Assert.Equal("000001", code)
Assert.Equal(5, limit)
Ok [ DateOnly(2026, 9, 21); DateOnly(2026, 9, 18) ] }
let status, body =
PersistenceTestHelpers.invoke
(appWithProbe probe)
"GET"
"/api/market/nav-dates?code=000001"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(200, status)
Assert.Contains("\"code\":\"000001\"", body)
Assert.Contains("\"dates\":[\"2026-09-21\",\"2026-09-18\"]", body)
[<Fact>]
member _.``market nav-dates endpoint answers 503 when the probe fails``() =
let probe =
{ new INavDateProbe with
member _.RecentNavDates(_, _, _) =
Error(MarketDataCollectorUnavailable "AKShare is unreachable: connection timed out") }
let status, body =
PersistenceTestHelpers.invoke
(appWithProbe probe)
"GET"
"/api/market/nav-dates?code=000001"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(503, status)
Assert.Contains("MARKET_DATA_UNAVAILABLE", body)
Assert.Contains("connection timed out", body)
[<Fact>]
member _.``market nav-dates endpoint rejects a malformed code with 400``() =
let probe =
{ new INavDateProbe with
member _.RecentNavDates(_, _, _) =
Error(InvalidMarketDataRequest "fund code must contain exactly six digits") }
let status, body =
PersistenceTestHelpers.invoke
(appWithProbe probe)
"GET"
"/api/market/nav-dates?code=abc"
[ "Authorization", "Bearer test-token" ]
""
Assert.Equal(400, status)
Assert.Contains("INVALID_MARKET_DATA_REQUEST", body)
[<RealAkshareFact>]
member _.``live AKShare probe returns the five most recent NAV dates``() =
let python = (NavDateProbeSupport.realAksharePython ()).Value
let script = Path.Combine(NavDateProbeSupport.repositoryRoot (), "scripts", "probe_akshare_nav_dates.py")
let startInfo = ProcessStartInfo(python)
startInfo.ArgumentList.Add script
startInfo.ArgumentList.Add "--code"
startInfo.ArgumentList.Add "000001"
startInfo.ArgumentList.Add "--limit"
startInfo.ArgumentList.Add "5"
startInfo.RedirectStandardOutput <- true
startInfo.RedirectStandardError <- true
startInfo.UseShellExecute <- false
match Environment.GetEnvironmentVariable("FUND_LAB_AKSHARE_PYTHONPATH") with
| value when not (String.IsNullOrWhiteSpace value) -> startInfo.Environment["PYTHONPATH"] <- value
| _ -> ()
use probeProcess = Process.Start startInfo
let standardOutput = probeProcess.StandardOutput.ReadToEnd()
let standardError = probeProcess.StandardError.ReadToEnd()
probeProcess.WaitForExit 60000 |> ignore
Assert.True(probeProcess.ExitCode = 0, sprintf "probe exited with %d: %s" probeProcess.ExitCode standardError)
use document = JsonDocument.Parse standardOutput
let dates =
document.RootElement.GetProperty("dates").EnumerateArray()
|> Seq.map (fun element -> element.GetString())
|> Seq.toList
Assert.Equal(5, List.length dates)
Assert.Equal<string list>(List.sortDescending dates, dates)
|
