test an affine change of variables

SciML · Mar 3, 2024 · 546833a · 546833a
1 parent f066ee4
commit 546833a
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/test/derivative_tests.jl b/test/derivative_tests.jl
@@ -359,10 +359,10 @@ end
 
 @testset "ChangeOfVariables rrule" begin
     alg = QuadGKJL()
-    # test a simple u-substitution of x = 2u
+    # test a simple u-substitution of x = 2.7u + 1.3
     talg = Integrals.ChangeOfVariables(alg) do f, domain
         if f isa IntegralFunction{false}
-            IntegralFunction((x, p) -> f(x/2, p)/2), domain .* 2
+            IntegralFunction((x, p) -> f((x - 1.3)/2.7, p)/2.7), map(x -> 1.3 + 2.7x, domain)
         else
             error("not implemented")
         end