This test checks for a regression against rdar://problem/4214080 document.embeds: embeds[0].Play() undefined at languageguide.org. Each test below states its expected outcome. plugin with nested plugin : should have a plugin and does plugin netsted in plugin : should have a plugin and does empty with nested plugin : should not have a plugin and does not plugin nested in empty : should have a plugin and does plugin nested in image : should not have a plugin and does not plugin nested in empty nested in plugin : should not have a plugin and does not standalone plugin : should have a plugin and does plugin with nested plugin of the same name should have a plugin and does empty with nested plugin of the same name should have a plugin and does