From 41f4c1717a41844dc744e71d52f5f4a70e85468b Mon Sep 17 00:00:00 2001
From: Lyndon White <lyndon.white@invenialabs.co.uk>
Date: Thu, 28 May 2020 12:16:02 +0100
Subject: [PATCH] mark as broken the test that fails on 1.0

---
 test/chainrules.jl | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/test/chainrules.jl b/test/chainrules.jl
index 5fceb863c..e87d161ab 100644
--- a/test/chainrules.jl
+++ b/test/chainrules.jl
@@ -144,10 +144,18 @@ using Zygote, Test, ChainRules
 
         @test (1,) == h(1)
 
-        a3, pb3 = Zygote.pullback(h, 1)
-        @test ((1,),) == pb3(1)
-    end
 
+        if VERSION > v"1"
+            a3, pb3 = Zygote.pullback(h, 1)
+            @test ((1,),) == pb3(1)
+        else
+            # broken on Julia 1.0 because of https://github.com/FluxML/Zygote.jl/issues/638
+            @test_broken begin
+                a3, pb3 = Zygote.pullback(h, 1);  # line that errors
+                ((1,),) == pb3(1)  # line actually being tested
+            end
+        end
+    end
 
     @testset "kwargs" begin
         kwfoo_rrule_hitcount = Ref(0)