From b9637bdc719db419670d53188ef60ebbedd5b90a Mon Sep 17 00:00:00 2001
From: Ashutosh Bharambe <a.bharambe123@gmail.com>
Date: Mon, 7 Oct 2024 08:30:03 +0000
Subject: [PATCH] test(CubicSpline): add tests for `AbstractMatrix`

---
 test/interpolation_tests.jl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test/interpolation_tests.jl b/test/interpolation_tests.jl
index 69e5c197..97e2a8d4 100644
--- a/test/interpolation_tests.jl
+++ b/test/interpolation_tests.jl
@@ -599,6 +599,16 @@ end
     A = CubicSpline(u, t)
     @test_throws DataInterpolations.ExtrapolationError A(-2.0)
     @test_throws DataInterpolations.ExtrapolationError A(2.0)
+
+    @testset "AbstractMatrix" begin 
+        t  = 0.1:0.1:1.0 
+        u = [sin.(t) cos.(t)]' |> collect
+        c = CubicSpline(u, t)
+        t_test = 0.1:0.05:1.0 
+        u_test = reduce(hcat, c.(t_test))
+        @test isapprox(u_test[1, :], sin.(t_test), atol = 1e-3)
+        @test isapprox(u_test[2, :], cos.(t_test), atol = 1e-3)
+    end
 end
 
 @testset "BSplines" begin