pg, test assigning non-array values to an array column. Closes #14716.

The behavior has changed since 4.1 and non-array values are no
longer type casted to a blank array. This way the user can define
custom validations on that property.

1 files changed, 9 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/array_test.rb b/activerecord/test/cases/adapters/postgresql/array_test.rb
index ff553c3f1a..fa7bebf08b 100644
--- a/activerecord/test/cases/adapters/postgresql/array_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/array_test.rb
@@ -254,6 +254,15 @@ class PostgresqlArrayTest < ActiveRecord::TestCase
     end
   end
 
+  def test_assigning_non_array_value
+    record = PgArray.new(tags: "not-an-array")
+    assert_equal "not-an-array", record.tags
+    e = assert_raises(ActiveRecord::StatementInvalid) do
+      record.save!
+    end
+    assert_instance_of PG::InvalidTextRepresentation, e.original_exception
+  end
+
   private
   def assert_cycle field, array
     # test creation