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module SomhairlesDream.Modeling.Tests.PipelineTests
open System
open System.IO
open Xunit
open SomhairlesDream.Modeling
open SomhairlesDream.Shared
let private ids : RunIds =
{ ProjectId = "heritage-001"
RunId = "run-20260920-001"
BaseId = "heritage"
TargetId = "heritage-001" }
let private expectOk = function
| Ok value -> value
| Error message -> failwith message
let private expectError = function
| Error message -> message
| Ok _ -> failwith "expected an error"
let private withTempDirectory action =
let path = Path.Combine(Path.GetTempPath(), "somhairles-dream-" + Guid.NewGuid().ToString("N"))
Directory.CreateDirectory(path) |> ignore
try
action path
finally
if Directory.Exists(path) then
Directory.Delete(path, true)
type private TestBridge(?wrongObjectIds: bool) =
interface IArtifactBridge with
member _.Export(request, _) =
File.WriteAllBytes(request.GlbPath, [| 0x67uy; 0x6Cuy; 0x54uy; byte request.Step.Index |])
Directory.CreateDirectory(Path.GetDirectoryName(request.LogPath)) |> ignore
File.WriteAllText(request.LogPath, $"bridge log for {request.Step.StepId}")
match request.RenderPath with
| Some path -> File.WriteAllBytes(path, [| 0x89uy; 0x50uy; 0x4Euy; 0x47uy |])
| None -> ()
let objectIds =
if defaultArg wrongObjectIds false then
[| "unexpected.object" |]
else
request.Step.ObjectIds
Ok
{ BlenderVersion = "5.0.1"
ExportedAt = DateTimeOffset.Parse("2026-09-20T12:00:05Z")
ObjectIds = objectIds
VerifiedObjectIds = objectIds
GlbBytes = 4L
RenderPath = request.RenderPath
RenderedAt = request.RenderPath |> Option.map (fun _ -> DateTimeOffset.Parse("2026-09-20T12:00:06Z")) }
let private options root bridge =
{ PipelineOptions.ArtifactRoot = root
Ids = ids
Render = true
Bridge = bridge
Clock = fun () -> DateTimeOffset.Parse("2026-09-20T12:00:00Z")
OnEvent = ignore }
[<Fact>]
let ``design steps expose the fixed ordered object contract`` () =
let steps = Design.steps
Assert.Equal(3, steps.Length)
Assert.True([| "01-foundation"; "02-frame"; "03-cabin" |] = (steps |> Array.map _.StepId))
Assert.True([| 0; 1; 2 |] = (steps |> Array.map _.Index))
Assert.True([| "heritage.foundation"; "heritage.deck" |] = steps[0].ObjectIds)
Assert.True(
[| "heritage.foundation"
"heritage.deck"
"heritage.frame.left"
"heritage.frame.right"
"heritage.spine" |] = steps[1].ObjectIds)
Assert.True(
[| "heritage.foundation"
"heritage.deck"
"heritage.frame.left"
"heritage.frame.right"
"heritage.spine"
"heritage.cabin"
"heritage.crossbeam" |] = steps[2].ObjectIds)
[<Fact>]
let ``pipeline commits each step and writes manifest after complete event`` () =
withTempDirectory (fun root ->
let manifest = Pipeline.run (options root (TestBridge() :> IArtifactBridge)) |> expectOk
let runDirectory = Path.Combine(root, ids.ProjectId, ids.RunId)
let eventsPath = Path.Combine(runDirectory, "events.ndjson")
let manifestPath = Path.Combine(runDirectory, "manifest.json")
Assert.Equal("complete", manifest.Status)
Assert.Equal(3, manifest.Steps.Length)
Assert.True(File.Exists(eventsPath))
Assert.True(File.Exists(manifestPath))
let verifiedManifest: ArtifactManifest = ArtifactVerifier.verify manifestPath |> expectOk
Assert.Equal(manifest.RunId, verifiedManifest.RunId)
Assert.Equal(manifest.Steps.Length, verifiedManifest.Steps.Length)
Assert.False(Directory.Exists(Path.Combine(runDirectory, ".staging")))
for step in manifest.Steps do
Assert.True(File.Exists(Path.Combine(runDirectory, step.ArtifactPath.Replace('/', Path.DirectorySeparatorChar))))
Assert.Equal($"logs/{step.StepId}.log", step.LogPath)
Assert.True(File.Exists(Path.Combine(runDirectory, step.LogPath.Replace('/', Path.DirectorySeparatorChar))))
Assert.True(step.Render |> Option.exists (fun render -> File.Exists(Path.Combine(runDirectory, render.ArtifactPath.Replace('/', Path.DirectorySeparatorChar)))))
Assert.True(step.ObjectIds = step.VerifiedObjectIds)
let events = File.ReadAllLines(eventsPath)
Assert.Contains("\"kind\":\"start\"", events[0])
Assert.Contains("\"kind\":\"complete\"", events[events.Length - 1]))
[<Fact>]
let ``pipeline rejects a pre-existing run directory without overwriting it`` () =
withTempDirectory (fun root ->
let runDirectory = Path.Combine(root, ids.ProjectId, ids.RunId)
Directory.CreateDirectory(runDirectory) |> ignore
let marker = Path.Combine(runDirectory, "marker.txt")
File.WriteAllText(marker, "keep")
let result = Pipeline.run (options root (TestBridge() :> IArtifactBridge))
Assert.True(Result.isError result)
Assert.Equal("keep", File.ReadAllText(marker)))
[<Fact>]
let ``pipeline fails before manifest commit when bridge object ids differ`` () =
withTempDirectory (fun root ->
let result = Pipeline.run (options root (TestBridge(true) :> IArtifactBridge))
let runDirectory = Path.Combine(root, ids.ProjectId, ids.RunId)
Assert.True(Result.isError result)
Assert.False(File.Exists(Path.Combine(runDirectory, "manifest.json")))
Assert.Contains("object ids", result |> expectError))
[<Fact>]
let ``manifest verifier rejects a tampered artifact hash`` () =
withTempDirectory (fun root ->
Pipeline.run (options root (TestBridge() :> IArtifactBridge)) |> expectOk |> ignore
let runDirectory = Path.Combine(root, ids.ProjectId, ids.RunId)
let artifactPath = Path.Combine(runDirectory, "steps", "01-foundation.glb")
let bytes = File.ReadAllBytes(artifactPath)
bytes[0] <- bytes[0] ^^^ 1uy
File.WriteAllBytes(artifactPath, bytes)
let result = ArtifactVerifier.verify (Path.Combine(runDirectory, "manifest.json"))
Assert.True(Result.isError result)
Assert.Contains("hash", result |> expectError))
[<Fact>]
let ``manifest verifier rejects a missing retained process log`` () =
withTempDirectory (fun root ->
Pipeline.run (options root (TestBridge() :> IArtifactBridge)) |> expectOk |> ignore
let runDirectory = Path.Combine(root, ids.ProjectId, ids.RunId)
File.Delete(Path.Combine(runDirectory, "logs", "01-foundation.log"))
let result = ArtifactVerifier.verify (Path.Combine(runDirectory, "manifest.json"))
Assert.True(Result.isError result)
Assert.Contains("log", result |> expectError))
|
