From a52a213576d50701e2a98fe30d60bb7baae334a9 Mon Sep 17 00:00:00 2001
From: Frames White <me@oxinabox.net>
Date: Wed, 7 Feb 2024 10:50:14 +0800
Subject: [PATCH] Also test for mutable tangent

---
 test/tangent_types/structural_tangent.jl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/tangent_types/structural_tangent.jl b/test/tangent_types/structural_tangent.jl
index 0cd06a16d..40b1e2a56 100644
--- a/test/tangent_types/structural_tangent.jl
+++ b/test/tangent_types/structural_tangent.jl
@@ -370,6 +370,11 @@ end
             a = Tangent{Tuple{Float64, Float64}}(2.0, 3.0)
             b = Tangent{Tuple{Float64, Float64}}(1.0, 1.0)
             @test (a - b) == Tangent{Tuple{Float64, Float64}}(1.0, 2.0)
+
+            a = MutableTangent{MFoo}(x=1.5, y=1.5)
+            b = MutableTangent{MFoo}(x=0.5, y=0.5)
+            @test (a - b) == MutableTangent{MFoo}(x=1.0, y=1.0)
+            
         end
 
         @testset "scaling" begin