1 files changed, 26 insertions, 0 deletions
diff --git a/tests/SomhairlesDream.Shared.Tests/ReplayTests.fs b/tests/SomhairlesDream.Shared.Tests/ReplayTests.fs
new file mode 100644
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--- /dev/null
+++ b/tests/SomhairlesDream.Shared.Tests/ReplayTests.fs
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+namespace SomhairlesDream.Shared.Tests
+
+open Xunit
+open SomhairlesDream.Shared
+
+module ReplayTests =
+    [<Fact>]
+    let ``reconstruction contains three visibly different geometry frames`` () =
+        let frames = Replay.frames ()
+
+        Assert.Equal(3, frames.Length)
+        Assert.True([| 1; 2; 3 |] = (frames |> Array.map (fun frame -> frame.Version)))
+        Assert.Equal("重建起点", frames[0].Label)
+        Assert.Equal("主承力骨架", frames[1].Label)
+        Assert.Equal("舱段重构", frames[2].Label)
+        Assert.False(frames[0].Mesh.Vertices = frames[1].Mesh.Vertices)
+        Assert.False(frames[1].Mesh.Vertices = frames[2].Mesh.Vertices)
+
+    [<Fact>]
+    let ``mesh snapshots expose indexed triangle buffers`` () =
+        let mesh = (Replay.frames ()).[2].Mesh
+        let positions = MeshData.positionData mesh
+        let indices = MeshData.triangleIndices mesh
+
+        Assert.Equal(mesh.Vertices.Length * 3, positions.Length)
+        Assert.Equal(45, indices.Length)