Fixes #10432 add_column not creating array columns in PostgreSQL

When then PostgreSQL visitor was [added](https://github.com/rails/rails/commit/6b7fdf3bf3675a14eae74acc5241089308153a34)
`add_column` was no longer receiving the column options directly. This
caused the options to be lost along the way.

1 files changed, 29 insertions, 0 deletions

diff --git a/activerecord/test/cases/migration/change_schema_test.rb b/activerecord/test/cases/migration/change_schema_test.rb
index 54fff8a0f5..e37dca856d 100644
--- a/activerecord/test/cases/migration/change_schema_test.rb
+++ b/activerecord/test/cases/migration/change_schema_test.rb
@@ -74,6 +74,35 @@ module ActiveRecord
         assert_equal "hello", five.default unless mysql
       end
 
+      def test_add_column_with_array
+        if current_adapter?(:PostgreSQLAdapter)
+          connection.create_table :testings
+          connection.add_column :testings, :foo, :string, :array => true
+
+          columns = connection.columns(:testings)
+          array_column = columns.detect { |c| c.name == "foo" }
+
+          assert array_column.array
+        else
+          skip "array option only supported in PostgreSQLAdapter"
+        end
+      end
+
+      def test_create_table_with_array_column
+        if current_adapter?(:PostgreSQLAdapter)
+          connection.create_table :testings do |t|
+            t.string :foo, :array => true
+          end
+
+          columns = connection.columns(:testings)
+          array_column = columns.detect { |c| c.name == "foo" }
+
+          assert array_column.array
+        else
+          skip "array option only supported in PostgreSQLAdapter"
+        end
+      end
+
       def test_create_table_with_limits
         connection.create_table :testings do |t|
           t.column :foo, :string, :limit => 255