test for negative-length copyto! call (#30)

nsajko · web-flow · commit 52e3342f1f7b · 2024-04-23T15:25:45.000+02:00
Discovered by #29
diff --git a/test/runtests.jl b/test/runtests.jl
@@ -193,6 +193,7 @@ end
                 @test copyto!(d, s) == 1:5
                 @test copyto!(d, 1, s, 1, length(s)) isa D{Float64}
                 @test copyto!(d, 1, s, 1, length(s)) == 1:5
+                @test_throws ArgumentError copyto!(d, 1, s, 1, -1)
             end
         end
     end
