More generally refuse to work with map update syntax.

Fixes #67

Author: christhekeele

Diff for: lib/matcha/rewrite/expression.ex

@@ -88,7 +88,7 @@ defmodule Matcha.Rewrite.Expression do
 
   # Maps should refuse to work with update syntax
   defp do_rewrite_literals(
-         {:%{}, _, [{:|, _, [{:%{}, _, _map_elements}, _map_updates]}]} = map_ast,
+         {:%{}, _, [{:|, _, _}]} = map_ast,
          rewrite
        ) do
     raise_map_update_error!(rewrite, map_ast)

Diff for: test/unit/matcha/rewrite/bodies_test.exs

@@ -164,6 +164,16 @@ defmodule Matcha.Rewrite.Bodies.UnitTest do
           end
         end
       end
+
+      assert_raise Matcha.Rewrite.Error, ~r"cannot use map update syntax in match specs", fn ->
+        defmodule test_module_name(context) do
+          import Matcha
+
+          spec do
+            {id, map} -> {id, %{ map | key: :value}}
+          end
+        end
+      end
     end
   end