1 files changed, 17 insertions, 0 deletions
diff --git a/activerecord/test/cases/type/unsigned_integer_test.rb b/activerecord/test/cases/type/unsigned_integer_test.rb
new file mode 100644
index 0000000000..1cd4dbc2c5
--- /dev/null
+++ b/activerecord/test/cases/type/unsigned_integer_test.rb
@@ -0,0 +1,17 @@
+require "cases/helper"
+
+module ActiveRecord
+  module Type
+    class UnsignedIntegerTest < ActiveRecord::TestCase
+      test "unsigned int max value is in range" do
+        assert_equal(4294967295, UnsignedInteger.new.serialize(4294967295))
+      end
+
+      test "minus value is out of range" do
+        assert_raises(ActiveModel::RangeError) do
+          UnsignedInteger.new.serialize(-1)
+        end
+      end
+    end
+  end
+end