Add the ability to nullify the `enum` column

1 files changed, 15 insertions, 0 deletions

diff --git a/activerecord/test/cases/enum_test.rb b/activerecord/test/cases/enum_test.rb
index 35e8a98156..017edcb194 100644
--- a/activerecord/test/cases/enum_test.rb
+++ b/activerecord/test/cases/enum_test.rb
@@ -58,6 +58,21 @@ class EnumTest < ActiveRecord::TestCase
     assert_equal "'unknown' is not a valid status", e.message
   end
 
+  test "assign nil value" do
+    @book.status = nil
+    assert @book.status.nil?
+  end
+
+  test "assign empty string value" do
+    @book.status = ''
+    assert @book.status.nil?
+  end
+
+  test "assign long empty string value" do
+    @book.status = '   '
+    assert @book.status.nil?
+  end
+
   test "constant to access the mapping" do
     assert_equal 0, Book::STATUS[:proposed]
     assert_equal 1, Book::STATUS["written"]