From a0acc4912c738295708dad62a8fcef68b46aebbc Mon Sep 17 00:00:00 2001
From: David Widmann <devmotion@users.noreply.github.com>
Date: Mon, 5 Aug 2024 12:17:20 +0200
Subject: [PATCH] Add test from #207

---
 test/pdmtypes.jl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/pdmtypes.jl b/test/pdmtypes.jl
index 9331671..ab4bac1 100644
--- a/test/pdmtypes.jl
+++ b/test/pdmtypes.jl
@@ -304,4 +304,12 @@ using Test
         @test_broken C - B isa Diagonal{Float64, Vector{Float64}}
         @test C - B ≈ Matrix(C) - Matrix(B)
     end
+
+    # https://github.com/JuliaStats/PDMats.jl/pull/207
+    @testset "PDMat from SymTridiagonal" begin
+        S = SymTridiagonal(fill(4, 4), fill(1, 3))
+        M = @inferred(PDMat(S))
+        @test M isa PDMat{Int,<:SymTridiagonal,<:Cholesky}
+        @test M == S
+    end
 end