add test

dlfivefifty · dlfivefifty · commit 5bbcb240a7dd · 2025-10-13T11:26:37.000+01:00
diff --git a/Project.toml b/Project.toml
@@ -1,7 +1,7 @@
 name = "ClassicalOrthogonalPolynomials"
 uuid = "b30e2e7b-c4ee-47da-9d5f-2c5c27239acd"
 authors = ["Sheehan Olver <solver@mac.com>"]
-version = "0.15.6"
+version = "0.15.7"
 
 
 [deps]
diff --git a/test/test_interlace.jl b/test/test_interlace.jl
@@ -16,6 +16,7 @@ import ClassicalOrthogonalPolynomials: PiecewiseInterlace, SetindexInterlace, pl
             @test u[-0.1] ≈ exp(-0.1)
             @test u[0.1] ≈ exp(0.1)
             @test u[0.] ≈ 2
+            @test sum(u) ≈ ℯ - ℯ^(-1)
         end
 
         @testset "two-interval ODE" begin
