Ensure at least one backend is tested

Author: jpsamaroo

test/runtests.jl

@@ -19,10 +19,13 @@ function generate_thunks()
     delayed((xs...)->[sum(xs)])(as...)
 end
 
+@test DaggerGPU.cancompute(:CUDA) || DaggerGPU.cancompute(:ROC)
+
 @testset "CUDA" begin
     if !DaggerGPU.cancompute(:CUDA)
         @warn "No CUDA devices available, skipping tests"
     else
+        didtest = true
         cuproc = DaggerGPU.processor(:CUDA)
         b = generate_thunks()
         opts = Dagger.Sch.ThunkOptions(;proctypes=[cuproc])
@@ -39,6 +42,7 @@ end
     if !DaggerGPU.cancompute(:ROC)
         @warn "No ROCm devices available, skipping tests"
     else
+        didtest = true
         rocproc = DaggerGPU.processor(:ROC)
         b = generate_thunks()
         opts = Dagger.Sch.ThunkOptions(;proctypes=[rocproc])