1 files changed, 29 insertions, 0 deletions
diff --git a/activerecord/test/cases/types/unknown_test.rb b/activerecord/test/cases/types/unknown_test.rb
new file mode 100644
index 0000000000..230d67b2fb
--- /dev/null
+++ b/activerecord/test/cases/types/unknown_test.rb
@@ -0,0 +1,29 @@
+require "cases/helper"
+
+class UnknownTest < ActiveRecord::TestCase
+
+  test "typecast attributes does't modify values" do
+    unkown = ActiveRecord::Type::Unknown.new
+    person = { 'name' => '0' }
+
+    assert_equal person['name'], unkown.cast(person['name'])
+    assert_equal person['name'], unkown.precast(person['name'])
+  end
+
+  test "cast as boolean" do
+    person =  { 'id' => 0, 'name' => ' ', 'admin' => 'false', 'votes' => '0' }
+    unkown = ActiveRecord::Type::Unknown.new
+
+    assert_equal false, unkown.boolean(person['votes'])
+    assert_equal false, unkown.boolean(person['admin'])
+    assert_equal false, unkown.boolean(person['name'])
+    assert_equal false, unkown.boolean(person['id'])
+
+    person = { 'id' => 5, 'name' => 'Eric', 'admin' => 'true', 'votes' => '25' }
+    assert_equal true, unkown.boolean(person['votes'])
+    assert_equal true, unkown.boolean(person['admin'])
+    assert_equal true, unkown.boolean(person['name'])
+    assert_equal true, unkown.boolean(person['id'])
+  end
+
+end
+\ No newline at end of file