`#not_in` with a range should respect proper precedence

Currently, doing

```ruby
relation[:id].not_eq(4).and(relation[:id].not_in(1..3))
```

will generate

```sql
"id" != 4 AND "id" < 1 OR "id" > 3
```

Which would incorrectly include records with an id of 4, as the OR
statement has higher precidence than the AND statement. The `or`
method on `Node` properly groups the statement in parenthesis.

1 files changed, 6 insertions, 6 deletions

diff --git a/test/visitors/test_to_sql.rb b/test/visitors/test_to_sql.rb
index abd8cfe356..62e1c57c73 100644
--- a/test/visitors/test_to_sql.rb
+++ b/test/visitors/test_to_sql.rb
@@ -480,16 +480,16 @@ module Arel
 
         it 'can handle two dot ranges' do
           node = @attr.not_in 1..3
-          compile(node).must_be_like %{
-            "users"."id" < 1 OR "users"."id" > 3
-          }
+          compile(node).must_equal(
+            %{("users"."id" < 1 OR "users"."id" > 3)}
+          )
         end
 
         it 'can handle three dot ranges' do
           node = @attr.not_in 1...3
-          compile(node).must_be_like %{
-            "users"."id" < 1 OR "users"."id" >= 3
-          }
+          compile(node).must_equal(
+            %{("users"."id" < 1 OR "users"."id" >= 3)}
+          )
         end
 
         it 'can handle ranges bounded by infinity' do