`supports_xxx?` returns whether a feature is supported by the backend

Rather than a configuration on the connection.

1 files changed, 25 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapter_test.rb b/activerecord/test/cases/adapter_test.rb
index 1c461a0459..a93e5e2b40 100644
--- a/activerecord/test/cases/adapter_test.rb
+++ b/activerecord/test/cases/adapter_test.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "cases/helper"
+require "support/connection_helper"
 require "models/book"
 require "models/post"
 require "models/author"
@@ -446,3 +447,27 @@ module ActiveRecord
     end
   end
 end
+
+if ActiveRecord::Base.connection.supports_advisory_locks?
+  class AdvisoryLocksEnabledTest < ActiveRecord::TestCase
+    include ConnectionHelper
+
+    def test_advisory_locks_enabled?
+      assert ActiveRecord::Base.connection.advisory_locks_enabled?
+
+      run_without_connection do |orig_connection|
+        ActiveRecord::Base.establish_connection(
+          orig_connection.merge(advisory_locks: false)
+        )
+
+        assert_not ActiveRecord::Base.connection.advisory_locks_enabled?
+
+        ActiveRecord::Base.establish_connection(
+          orig_connection.merge(advisory_locks: true)
+        )
+
+        assert ActiveRecord::Base.connection.advisory_locks_enabled?
+      end
+    end
+  end
+end