fix tests for backwards incompat

Author: Christopher Doris

test/abstract.jl

@@ -129,7 +129,7 @@
         @test pylen(x) == 0
     end
     @testset "pydir" begin
-        x = pytype("Foo", (), (foo=1, bar=2))()
+        x = pytype("Foo", (), ["foo"=>1, "bar"=>2])()
         d = pydir(x)
         @test pycontains(d, "__class__")
         @test pycontains(d, "foo")

test/concrete.jl

@@ -243,7 +243,7 @@ end
     x = pytype(pybuiltins.type)
     @test pyisinstance(x, pybuiltins.type)
     @test pyis(x, pybuiltins.type)
-    x = pytype("Foo", (), (foo=1, bar=2))
+    x = pytype("Foo", (), ["foo"=>1, "bar"=>2])
     @test pyisinstance(x, pybuiltins.type)
     @test pyeq(Bool, x.__name__, "Foo")
     @test pyeq(Bool, x.foo, 1)