Allow ForwardDiff v1 (#1957)

* Allow ForwardDiff v1

* Update tests

* Don't update version number

---------

Co-authored-by: David Widmann <[email protected]>

Author: mcabbott

Project.toml

@@ -40,7 +40,7 @@ DensityInterface = "0.4"
 Distributed = "<0.0.1, 1"
 FillArrays = "0.9, 0.10, 0.11, 0.12, 0.13, 1"
 FiniteDifferences = "0.12"
-ForwardDiff = "0.10"
+ForwardDiff = "0.10, 1"
 JSON = "0.21"
 LinearAlgebra = "<0.0.1, 1"
 OffsetArrays = "1"

test/univariate/discrete/negativebinomial.jl

@@ -76,8 +76,10 @@ end
 
 @testset "issue #1582" begin
     dp = mydiffp(1.0, 1.0, 0.0)
-    @test ForwardDiff.derivative(p -> logpdf(NegativeBinomial(1.0, p), 0.0), 1.0) == dp == 1.0
+    @test dp == 1
+    @test ForwardDiff.derivative(p -> logpdf(NegativeBinomial(1.0, p; check_args=false), 0.0), 1.0) == dp
 
     dr = mydiffr(1.0, 1.0, 0.0)
-    @test ForwardDiff.derivative(r -> logpdf(NegativeBinomial(r, 1.0), 0.0), 1.0) == dr == 0.0
+    @test dr == 0
+    @test ForwardDiff.derivative(r -> logpdf(NegativeBinomial(r, 1.0), 0.0), 1.0) == dr
 end