fix test

Author: Miha Zgubic

test/tangent_types/notimplemented.jl

@@ -47,7 +47,6 @@
 
         # unsupported operations
         E = ChainRulesCore.NotImplementedException
-        @test_throws E -ni
         for a in (true, x, NoTangent(), ZeroTangent(), thunk)
             @test_throws E ni - a
             @test_throws E a - ni

test/tangent_types/tangent.jl

@@ -324,7 +324,7 @@ end
     @testset "-Tangent" begin
         t = Tangent{Foo}(; x=1.0, y=-2.0)
         @test -t == Tangent{Foo}(; x=-1.0, y=2.0)
-        @test -1.0*t == -t
+        @test -1.0 * t == -t
     end
 
     @testset "scaling" begin